47 results on '"Jay, Gallagher"'
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2. Lessons Learned Through Two Phases of Developing and Implementing a Technology Supporting Integrated Care: Case Study
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Stephanie Di Pelino, Larkin Lamarche, Tracey Carr, Julie Datta, Jessica Gaber, Doug Oliver, Jay Gallagher, Steven Dragos, David Price, and Dee Mangin
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Medicine - Abstract
BackgroundAs health care becomes more fragmented, it is even more important to focus on the provision of integrated, coordinated care between health and social care systems. With the aging population, this coordination is even more vital. Information and communication technology (ICT) can support integrated care if the form of technology follows and supports functional integration. Health TAPESTRY (Teams Advancing Patient Experience: Strengthening Quality) is a program centered on the health of older adults, supported by volunteers, primary care teams, community engagement and connections, and an ICT known as the Health TAPESTRY application (TAP-App), a web-based application that supports volunteers in completing client surveys, volunteer coordinators in managing the volunteer program, and primary care teams in requesting and receiving information. ObjectiveThis paper describes the development, evolution, and implementation of the TAP-App ICT to share the lessons learned. MethodsA case study was conducted with the TAP-App as the case and the perspectives of end users and stakeholders as the units of analysis. The data consisted of researchers’ perspectives on the TAP-App from their own experiences, as well as feedback from other stakeholders and end user groups. Data were collected through written retrospective reflection with the program manager, a specific interview with the technology lead, key emailed questions to the TAP-App developer, and viewpoints and feedback during paper drafting from other research team members. There were 2 iterations of Health TAPESTRY and the TAP-App and we focused on learnings from the second implementation (2018-2020) which was a pragmatic implementation scale-up trial using the Reach, Effectiveness, Adoption, Implementation, and Maintenance framework at 6 primary care sites across Ontario, Canada. ResultsTAP-App (version 1.0), which was iteratively developed, was introduced as a tool to schedule volunteer and client visits and collect survey data using a tablet computer. TAP-App (version 2.0) was developed based on this initial experience and a desire for a program management tool that focused more on dual flow among users and provided better support for research. The themes of the lessons learned were as follows: iterative feedback is valuable; if ICT will be used for research, develop it with research in mind; prepare for challenges in the integration of ICT into the existing workflow; ask whether interoperability should be a goal; and know that technology cannot do it alone yet—the importance of human touch points. ConclusionsHealth TAPESTRY is human-centered. The TAP-App does not replace these elements but rather helps enable them. Despite this shift in supporting integrated care, barriers remained to the uptake of the TAP-App that would have allowed a full flow of information between health and social settings in supporting patient care. This indicates the need for an ongoing focus on the human use of ICT in similar programs. more...
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- 2022
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3. Searching for VHE gamma-ray emission associated with IceCube neutrino alerts using FACT, H.E.S.S., MAGIC, and VERITAS
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Konstancja, Satalecka, Acciari, Victor A., Stefano, Ansoldi, Lucio Angelo Antonelli, Axel Arbet Engels, Manuel, Artero, Katsuaki, Asano, Dominik, Baack, Ana, Babic, Andr('(e))s, Baquero, Ulisses Barres de Almeida, Juan Abel Barrio, Ivana, Batkovi('(c)), Josefa Becerra Gonzalez, Wlodek, Bednarek, Lorenzo, Bellizzi, Elisa, Bernardini, Maria-Isabel, Bernardos, Alessio, Berti, Jürgen, Besenrieder, Wrijupan, Bhattacharyya, Ciro, Bigongiari, Adrian, Biland, Oscar, Blanch, Hendrik, Bökenkamp, Giacomo, Bonnoli, Zeljka, Bosnjak, Giovanni, Busetto, Roberto, Carosi, Giovanni, Ceribella, Matteo, Cerruti, Yating, Chai, Ashot, Chilingarian, Stefan, Cikota, Sidika Merve Colak, Eduardo, Colombo, Jose Luis Contreras, Juan, Cortina, Stefano, Covino, Giacomo D( extquotesingle)Amico, Valerio D( extquotesingle)Elia, Paolo Da Vela, Francesco, Dazzi, Alessandro De Angelis, Barbara De Lotto, Manuel, Delfino, Jordi, Delgado, Carlos Delgado Mendez, Davide, Depaoli, Federico Di Pierro, Leonardo Di Venere, Elia Do Souto Espi(~(n))eira, Dijana Dominis Prester, Alice, Donini, Daniela, Dorner, Michele, Doro, Dominik, Elsaesser, Vandad Fallah Ramazani, Alicia, Fattorini, Maria Victoria Fonseca, Lluis, Font, Christian, Fruck, Satoshi, Fukami, Yasushi, Fukazawa, Garc('(i))a L('(o))pez, Ramon J., Markus, Garczarczyk, Sargis, Gasparyan, Markus, Gaug, Giglietto, Nicola, Francesco, Giordano, Pawel, Gliwny, Nikola, Godinovic, David, Green, Jarred Gershon Green, Daniela, Hadasch, Alexander, Hahn, Lea, Heckmann, Javier, Herrera, John, Hoang, Dario, Hrupec, Moritz, Hütten, Tomohiro, Inada, Kazuma, Ishio, Yuki, Iwamura, Irene Jim('(e))nez Mart('(i))nez, Jenni, Jormanainen, L('(e))a, Jouvin, Marie, Karjalainen, Daniel, Kerszberg, Yukiho, Kobayashi, Hidetoshi, Kubo, Junko, Kushida, Alessandra, Lamastra, Damir, Lelas, Francesco, Leone, Elina, Lindfors, Lena, Linhoff, Saverio, Lombardi, Francesco, Longo, Ruben, Lopez-Coto, Marcos, L('(o))pez-Moya, Alicia, L('(o))pez-Oramas, Loporchio, Serena, Bernardo Machado de Oliveira Fraga, Camilla, Maggio, Pratik, Majumdar, Martin, Makariev, Manuela, Mallamaci, Galina, Maneva, Marina, Manganaro, Karl, Mannheim, Laura, Maraschi, Mos(`(e)), Mariotti, Manel, Martinez, Daniel, Mazin, Stefano, Menchiari, Simone, Mender, Sa( (s))a Mi('(c))anovi('(c)), Davide, Miceli, Tjark, Miener, Jose Miguel Miranda, Razmik, Mirzoyan, Edgar, Molina, Abelardo, Moralejo, Daniel, Morcuende, Victoria, Moreno, Elena, Moretti, Takeshi, Nakamori, Lara, Nava, Vitaly, Neustroev, Cosimo, Nigro, Kari, Nilsson, Kyoshi, Nishijima, Koji, Noda, Seiya, Nozaki, Yoshiki, Ohtani, Tomohiko, Oka, Jorge, Otero-Santos, Simona, Paiano, Michele, Palatiello, David, Paneque, Riccardo, Paoletti, Paredes, Josep M., Lovro, Pavleti('(c)), Pablo, Pe(~(n))il, Massimo, Persic, Marine, Pihet, Pier Giorgio Prada Moroni, Elisa, Prandini, Chaitanya, Priyadarshi, Ivica, Puljak, Wolfgang, Rhode, Marc, Rib('(o)), Javier, Rico, Chiara, Righi, Andrea, Rugliancich, Narek, Sahakyan, Takayuki, Saito, Shunsuke, Sakurai, Francesco Gabriele Saturni, Bernd, Schleicher, Kevin, Schmidt, Thomas, Schweizer, Julian, Sitarek, Iva, ( (S))nidari('(c)), Dorota, Sobczy('(n))ska, Alessia, Spolon, Antonio, Stamerra, Jelena Stri( (s))kovi('(c)), Derek, Strom, Marcel, Strzys, Yusuke, Suda, Tihomir, Suri('(c)), Mitsunari, Takahashi, Ryuji, Takeishi, Fabrizio, Tavecchio, Petar, Temnikov, Tomislav, Terzic, Masahiro, Teshima, Luca, Tosti, Stefano, Truzzi, Antonio, Tutone, Santiago, Ubach, Juliane van Scherpenberg, Gaia, Vanzo, Monica VAZQUEZ ACOSTA, Sofia, Ventura, Vassil, Verguilov, Carlo Francesco Vigorito, Vincenzo, Vitale, Ievgen, Vovk, Martin, Will, Carolin, Wunderlich, Tokonatsu, Yamamoto, Darko, Zari('(c)), Matteo, Balbo, Thomas, Bretz, Jens, Buss, Laura, Eisenberger, Dorothee, Hildebrand, Roman, Iotov, Adelina, Kalenski, Dominik, Neise, Maximilian, Noethe, Aleksander, Paravac, Vitalii, Sliusar, Roland, Walter, Rasha, Abbasi, Markus, Ackermann, Jenni, Adams, Juanan, Aguilar, Ahlers, M., Maryon, Ahrens, Cyril Martin Alispach, Antonio Augusto Alves Junior, Najia Moureen Binte Amin, Rui, An, Karen, Andeen, Tyler, Anderson, Gisela, Anton, Carlos, Arguelles, Yosuke, Ashida, Spencer, Axani, Xinhua, Bai, Aswathi Balagopal, V., Anastasia Maria Barbano, Barwick, S. W., Benjamin, Bastian, Vedant, Basu, Sebastian, Baur, Bay, R. C., Beatty, J. J., Becker, K. -H., Julia Becker Tjus, Chiara, Bellenghi, Segev, Benzvi, Berley, D., Besson, D. Z., Gary, Binder, Daniel, Bindig, Blaufuss, E., Summer, Blot, Matthias, Boddenberg, Federico, Bontempo, Jurgen, Borowka, Boser, S., Olga, Botner, Jakob, Bottcher, Etienne, Bourbeau, Federica, Bradascio, Braun, J., Stephanie, Bron, Jannes, Brostean-Kaiser, Sally-Ann, Browne, Alexander, Burgman, Ryan, Burley, Raffaela, Busse, Michael, Campana, Erin, Carnie-Bronca, Chujie, Chen, Dmitry, Chirkin, Koun, Choi, Bryanlee, Clark, Kenneth, Clark, Lew, Classen, Alan, Coleman, Gabriel, Collin, Conrad, J. M., Paul, Coppin, Pablo, Correa, Cowen, D. F., Cross, R., Christian, Dappen, Pranav, Dave, Catherine DE CLERCQ, James, Delaunay, Hans, Dembinski, Kunal, Deoskar, Sam De Ridder, Abhishek, Desai, Paolo, Desiati, Krijn de Vries, Gwenhaël de Wasseige, Meike De With, Tyce, Deyoung, Sukeerthi, Dharani, Alejandro, Diaz, Juan Carlos Diaz-Velez, Markus, Dittmer, Hrvoje, Dujmovic, Matt, Dunkman, Michael, Duvernois, Emily, Dvorak, Thomas, Ehrhardt, Philipp, Eller, Ralph, Engel, Hannah, Erpenbeck, John, Evans, Evenson, P. A., Kwok Lung Fan, Fazely, A. R., Sebastian, Fiedlschuster, Aaron, Fienberg, Kirill, Filimonov, Chad, Finley, Leander, Fischer, Derek, B Fox, Anna, Franckowiak, Elizabeth, Friedman, Alexander, Fritz, Philipp, Furst, Gaisser, T. K., Jay, Gallagher, Erik, Ganster, Alfonso, Garcia, Simone, Garrappa, Gerhardt, L., Ava, Ghadimi, Christian, Glaser, Theo, Glauch, Thorsten, Glusenkamp, Goldschmidt, A., Javier, Gonzalez, Sreetama, Goswami, Darren, Grant, Timoth('(e))e, Gr('(e))goire, Spencer, Griswold, Mehmet, Gunduz, Christoph, Günther, Christian, Haack, Allan, Hallgren, Halliday, R., Halve, L., Halzen, F., Martin Ha Minh, Kael, Hanson, John, Hardin, Harnisch, Alexander A., Andreas, Haungs, Simon, Hauser, Dustin, Hebecker, Helbing, K., Felix, Henningsen, Hettinger, Emma C., Stephanie, Hickford, Joshua, Hignight, Colton, Hill, Hill, G. C., Kara, Hoffman, Ruth, Hoffmann, Tobias, Hoinka, Benjamin, Hokanson-Fasig, Hoshina, K., Feifei, Huang, Matthias, Huber, Thomas, Huber, Klas, Hultqvist, Mirco, Hunnefeld, Raamis, Hussain, Seongjin, In, Nad(`(e))ge, Iovine, Aya, Ishihara, Matti, Jansson, George, Japaridze, Minjin, Jeong, Ben, Jones, Donghwa, Kang, Woosik, Kang, Xinyue, Kang, Alexander, Kappes, David, Kappesser, Timo, Karg, Martina, Karl, Karle, A., Katz, U., Kauer, M., Moritz, Kellermann, Kelley, J. L., Ali, Kheirandish, Ken( extquotesingle)ichi Kin, Thomas, Kintscher, Joanna, Kiryluk, Spencer, Klein, Ramesh, Koirala, Hermann, Kolanoski, Tomas, Kontrimas, Lutz, Kopke, Claudio, Kopper, Sandro, Kopper, Koskinen, D. J., Paras, Koundal, Michael, Kovacevich, Marek, Kowalski, Tetiana, Kozynets, Emma, Kun, Naoko, Kurahashi, Neha, Lad, Cristina Lagunas Gualda, Justin, Lanfranchi, Michael, J Larson, Frederik Hermann Lauber, Jeffrey, Lazar, Jiwoong, Lee, Kayla, Leonard, Agnieszka, Leszczy('(n))ska, Yijia, Li, Massimiliano, Lincetto, Qinrui, Liu, Maria, Liubarska, Elisa, Lohfink, Cristian Jesus Lozano Mariscal, Lu, Lu, Francesco, Lucarelli, Andrew, Ludwig, William, Luszczak, Yang, Lyu, Wing Yan Ma, James, Madsen, Kendall, Mahn, Yuya, Makino, Sarah, Mancina, Ioana Codrina Maris, Maruyama, Reina H., Mase, K., Thomas, Mcelroy, Frank, Mcnally, James Vincent Mead, Meagher, K., Andres, Medina, Maximilian, Meier, Stephan, Meighen-Berger, Jessie, Micallef, Daniela, Mockler, Teresa, Montaruli, Roger, Moore, Morse, R., Marjon, Moulai, Richard, Naab, Ryo, Nagai, Uwe, Naumann, Jannis, Necker, Le Viet Nguyen, Hans, Niederhausen, Mehr, Nisa, Sarah, Nowicki, Dave, Nygren, Anna Obertacke Pollmann, Marie, Oehler, Olivas, A., Erin O( extquotesingle)Sullivan, Hershal, Pandya, Daria, Pankova, Nahee, Park, Grant, Parker, Ek Narayan Paudel, Larissa, Paul, Carlos Perez de los Heros, Lilly, Peters, Saskia, Philippen, Damian, Pieloth, Sarah, Pieper, Martin, Pittermann, Pizzuto, A., Plum, M., Yuiry, Popovych, Alessio, Porcelli, Maria Prado Rodriguez, Buford Price, P., Brandom, Pries, Gerald, Przybylski, Christoph, Raab, Amirreza, Raissi, Mohamed, Rameez, Rawlins, K., Immacolata Carmen Rea, Abdul, Rehman, Ren('(e)), Reimann, Giovanni, Renzi, Elisa, Resconi, Simeon, Reusch, Mike, Richman, Benedikt, Riedel, Ella, Roberts, Sally, Robertson, Gerrit, Roellinghoff, Martin, Rongen, Carsten, Rott, Tim, Ruhe, Dirk, Ryckbosch, Devyn Rysewyk Cantu, Ibrahim, Safa, Julian, Saffer, Sebastian Sanchez Herrera, Alexander, Sandrock, Joakim, Sandroos, Marcos, Santander, Subir, Sarkar, Sourav, Sarkar, Maximilian Karl Scharf, Merlin, Schaufel, Harald, Schieler, Sebastian, Schindler, Schlunder, P., Torsten, Schmidt, Austin, Schneider, Judith, Schneider, Schröder, Frank G., Lisa Johanna Schumacher, Georg, Schwefer, Steve, Sclafani, Seckel, D., Surujhdeo, Seunarine, Ankur, Sharma, Shefali, Shefali, Manuel, Silva, Barbara, Skrzypek, Ben, Smithers, Robert, Snihur, Jan, Soedingrekso, Dennis, Soldin, Christian, Spannfellner, Glenn, Spiczak, Christian, Spiering, Juliana, Stachurska, Michael, Stamatikos, Stanev, T., Robert, Stein, Joeran, Stettner, Steuer, A., Stezelberger, T., Timo, Sturwald, Thomas, Stuttard, Sullivan, G. W., Taboada, I., Frederik, Tenholt, Samvel, Ter-Antonyan, Tilav, S., Franziska, Tischbein, Kirsten, Tollefson, Christoph, Tönnis, Simona, Toscano, Delia, Tosi, Alexander, Trettin, Maria, Tselengidou, Chunfai, Tung, Andrea, Turcati, Roxanne, Turcotte, Colin, Turley, Jean Pierre Twagirayezu, Bunheng, Ty, Martin Unland Elorrieta, Nora, Valtonen-Mattila, Justin, Vandenbroucke, Nick van Eijndhoven, David, Vannerom, Jakob van Santen, Stef, Verpoest, Matthias, Vraeghe, Walck, C., Timothyblake, Watson, Chris, Weaver, Philip, Weigel, Andreas, Weindl, Matthew, Weiss, Jan, Weldert, Chris, Wendt, Johannes, Werthebach, Mark, Weyrauch, Nathan, Whitehorn, Wiebusch, C. H., Dawn, Williams, Martin, Wolf, Kurt, Woschnagg, Gerrit, Wrede, Johan, Wulff, Xianwu, Xu, Yiqian, Xu, Juan Pablo Yanez, Yoshida, S., Shiqi, Yu, Tianlu, Yuan, Zelong, Zhang, Weidong, Jin, Hassan, Abdalla, Felix, Aharonian, Faical, Ait-Benkhali, Oguzhan, Anguener, Cornelia, Arcaro, Celine, Armand, Tom, Armstrong, Halim, Ashkar, Michael, Backes, Vardan, Baghmanyan, Victor Barbosa Martins, Anna, Barnacka, Monica, Barnard, Rowan, Batzofin, Yvonne, Becherini, David, Berge, Konrad, Bernlöhr, Baiyang, Bi, Markus, Boettcher, Catherine, Boisson, Julien, Bolmont, Mathieu de Bony, Mischa, Breuhaus, Robert, Brose, Francois, Brun, Tomasz, Bulik, Thomas, Bylund, Floriane, Cangemi, Sami, Caroff, Sabrina, Casanova, Jaqueline, Catalano, Pauline, Chambery, Tej Bahadur Chand, Andrew, Chen, Garret, Cotter, Malgorzata, Curlo, Jean Damascene Mbarubucyeye, Isak Delberth Davids, James, Davies, Justine, Devin, Arache, Djannati-Ataï, Anton, Dmytriiev, Axel, Donath, Victor, Doroshenko, Lente, Dreyer, Louis Du Plessis, Connor, Duffy, Kathrin, Egberts, Sabrina, Einecke, Gabriel, Emery, Jean-Pierre, Ernenwein, Steven, Fegan, Kirsty, Feijen, Armand, Fiasson, Gaëtan Fichet de Clairfontaine, Gerard, Fontaine, Lott, Frans, Matthias, Fuessling, Stefan, Funk, Stefano, Gabici, Yves, Gallant, Shahede, Ghafourizade, Gianluca, Giavitto, Luca, Giunti, Dorit, Glawion, Jean-Francois, Glicenstein, Marie-H('(e))l(`(e))ne, Grondin, Sumari, Hattingh, Maria, Haupt, German, Hermann, Jim, Hinton, Werner, Hofmann, Clemens, Hoischen, Tim, Holch, Markus, Holler, Dieter, Horns, Zhiqiu, Huang, David, Huber, Mario, Hörbe, Marek, Jamrozy, Felix, Jankowsky, Vikas, Joshi, Ira, Jung, Eli, Kasai, Krzysztof, Katarzynski, Ul(`(i)), Katz, Dmitry, Khangulyan, Bruno, Khelifi, Stefan, Klepser, Wlodek, Kluzniak, Nukri, Komin, Ruslan, Konno, Karl, Kosack, Dmitriy, Kostunin, Michael, Kreter, Ga( (s))per Kukec Mezek, Anu, Kundu, Giovanni, Lamanna, S('(e))bastien Le Stum, Anne, Lemiere, Marianne, Lemoine-Goumard, Jean-Philippe, Lenain, Fabian, Leuschner, Christelle, Levy, Thomas, Lohse, Anna, Luashvili, Iryna, Lypova, Jonathan, Mackey, Jhilik, Majumdar, Denys, Malyshev, Dmitry, Malyshev, Vincent, Marandon, Paolo, Marchegiani, Alexandre, Marcowith, Arnaud, Mares, Guillem Marti( extquotesingle)i-Devesa, Ramin, Marx, Gilles, Maurin, Pieter, Meintjes, Manuel, Meyer, Alison, Mitchell, Rafal, Moderski, Lars, Mohrmann, Alessandro, Montanari, Chris, Moore, Paul, Morris, Emmanuel, Moulin, Jacques, Muller, Thomas, Murach, Kaori, Nakashima, Mathieu Naurois (de), Amid, Nayerhoda, Hambeleleni, Ndiyavala, Jacek, Niemiec, Angel, Noel, Paul O( extquotesingle)Brien, Laenita Lorraine Oberholzer, Stefan, Ohm, Laura, Olivera-Nieto, Emma Ona-Wilhelmi (de), Michal, Ostrowski, Sebastian, Panny, Michael, Panter, Dan, Parsons, Giada, Peron, Santiago, Pita, Vincent, Poireau, Dmitry, Prokhorov, Heike, Prokoph, Gerd, Puehlhofer, Michael, Punch, Andreas, Quirrenbach, Patrick, Reichherzer, Anita, Reimer, Olaf, Reimer, Quentin, Remy, Matthieu, Renaud, Brian, Reville, Frank, Rieger, Carlo, Romoli, Gavin, Rowell, Bronislaw, Rudak, Hector Rueda Ricarte, Edna Ruiz Velasco, Vardan, Sahakian, Simon, Sailer, Heiko, Salzmann, David, Sanchez, Andrea, Santangelo, Manami, Sasaki, Johannes, Schaefer, Hester, Schutte, Ullrich, Schwanke, Fabian, Schüssler, Mohanraj, Senniappan, Albert, Seyffert, Shapopi, Jimmy N. S., Kleopas, Shiningayamwe, Rachel, Simoni, Atreyee, Sinha, Helene, Sol, Hugh, Spackman, Andreas, Specovius, Samuel Timothy Spencer, Marion, Spir-Jacob, Lukasz, Stawarz, Riaan, Steenkamp, Christian, Stegmann, Simon, Steinmassl, Constantin, Steppa, Lei, Sun, Tadayuki, Takahashi, Takaaki, Tanaka, Thomas, Tavernier, Andrew, Taylor, Regis, Terrier, Hannes, Thiersen, Charles, Thorpe-Morgan, Martin, Tluczykont, Lenka, Tomankova, Michelle, Tsirou, Naomi, Tsuji, Richard, Tuffs, Yasunobu, Uchiyama, Johann van der Walt, Christopher van Eldik, Carlo van Rensburg, Brian van Soelen, George, Vasileiadis, Johannes, Veh, Christo, Venter, Pascal, Vincent, Jacco, Vink, Völk, Heinrich J., Stefan, Wagner, Jason John Watson, Felix, Werner, Richard, White, Alicja, Wierzcholska, Yu Wun Wong, Hend, Yassin, Anke, Yusafzai, Michael, Zacharias, Roberta, Zanin, Davit, Zargaryan, Andrzej, Zdziarski, Andreas, Zech, Sylvia, Zhu, Andreas, Zmija, Samuel, Zouari, Natalia, Zywucka, The FACT Collaboration, The H.E.S.S. Collaboration, The IceCube Collaboration, The MAGIC Collaboration, The VERITAS Collaboration, and Współautorami artykułu są członkowie Magic Collaboration, IceCube Collaboration, FACT Collaboration, H.E.S.S. Collaboration, VERITAS Collaboration w liczbie 808 more...
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Physics ,High Energy Astrophysical Phenomena (astro-ph.HE) ,Point source ,Astrophysics::High Energy Astrophysical Phenomena ,Gamma ray ,Astrophysics::Instrumentation and Methods for Astrophysics ,FOS: Physical sciences ,IACT ,Astrophysics ,law.invention ,High Energy Physics - Experiment ,Telescope ,High Energy Physics - Experiment (hep-ex) ,law ,HESS - Abteilung Hinton ,ddc:530 ,High Energy Physics::Experiment ,MAGIC (telescope) ,Neutrino ,Blazar ,Astrophysics - High Energy Astrophysical Phenomena ,Cherenkov radiation - Abstract
The realtime follow-up of neutrino events is a promising approach to search for astrophysical neutrino sources. It has so far provided compelling evidence for a neutrino point source: the flaring gamma-ray blazar TXS 0506+056 observed in coincidence with the high-energy neutrino IceCube-170922A detected by IceCube. The detection of very-high-energy gamma rays (VHE, $\mathrm{E} > 100\,\mathrm{GeV}$) from this source helped establish the coincidence and constrained the modeling of the blazar emission at the time of the IceCube event. The four major imaging atmospheric Cherenkov telescope arrays (IACTs) - FACT, H.E.S.S., MAGIC, and VERITAS - operate an active follow-up program of target-of-opportunity observations of neutrino alerts sent by IceCube. This program has two main components. One are the observations of known gamma-ray sources around which a cluster of candidate neutrino events has been identified by IceCube (Gamma-ray Follow-Up, GFU). Second one is the follow-up of single high-energy neutrino candidate events of potential astrophysical origin such as IceCube-170922A. GFU has been recently upgraded by IceCube in collaboration with the IACT groups. We present here recent results from the IACT follow-up programs of IceCube neutrino alerts and a description of the upgraded IceCube GFU system., Presented at the 37th International Cosmic Ray Conference (ICRC 2021). See arXiv:2107.06966 for all IceCube contributions. See arXiv:2108.05257 for all H.E.S.S. contributions more...
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- 2022
4. Searching for Dark Matter from the Sun with the IceCube Detector
- Author
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Lisa Johanna Schumacher, Elisa Lohfink, Javier Gonzalez, Roxanne Turcotte, Catherine De Clercq, Michael DuVernois, Barbara Skrzypek, Larissa Paul, Naoko Kurahashi, Frank G. Schröder, Thomas McElroy, Erin O'Sullivan, S. Böser, Gerald Przybylski, Jakob van Santen, Shiqi Yu, Federica Bradascio, Alexander Burgman, Simeon Reusch, K. Meagher, Mehr Nisa, Benedikt Riedel, Stephanie Hickford, Delia Tosi, Sebastian Baur, Sebastian Fiedlschuster, Markus Ackermann, S. W. Barwick, Sreetama Goswami, Ken'ichi Kin, Ryan Burley, A. Steuer, Qinrui Liu, Martina Karl, Raamis Hussain, Aaron Fienberg, John Evans, Amirreza Raissi, U. Katz, Sally Robertson, Judith Schneider, Andres Medina, Donghwa Kang, Merlin Schaufel, Dawn Williams, Martin Pittermann, Chris Weaver, Stephanie Bron, K. Hoshina, Hrvoje Dujmovic, Jurgen Borowka, Benjamin Bastian, Anastasia Maria Barbano, Brian Clark, Sebastian Sanchez Herrera, Glenn Spiczak, Zelong Zhang, Michael Stamatikos, Jan Soedingrekso, P. Schlunder, John Hardin, Spencer Axani, Kael Hanson, Saskia Philippen, D. F. Cowen, A. Goldschmidt, Julia Becker Tjus, Markus Ahlers, Martin Unland Elorrieta, Shefali Shefali, C. Walck, Alfonso Garcia, Ankur Sharma, Jeffrey Lazar, Le Viet Nguyen, J. J. Beatty, Tianlu Yuan, Matthias Vraeghe, Torsten Schmidt, Abdul Rehman, Carsten Rott, Dave Nygren, Mohamed Rameez, Cyril Martin Alispach, Karen Andeen, Felix Henningsen, Tyler Anderson, Surujhdeo Seunarine, Thomas K. Gaisser, Timo Karg, Hermann Kolanoski, Carlos Arguelles, Lutz Kopke, Chiara Bellenghi, Thomas Kintscher, Maximilian Meier, Jessie Micallef, Juan Pablo Yanez, IceCube, Josh Peterson, Emma Kun, Paolo Desiati, Matthias Huber, Juanan Aguilar, Lenka Tomankova, Yosuke Ashida, A. R. Fazely, J. L. Kelley, Kenneth Clark, Aya Ishihara, Matthew Weiss, Yuiry Popovych, Kirill Filimonov, Pranav Dave, Maximilian Karl Scharf, Alejandro Diaz, Krijn de Vries, Stef Verpoest, Andreas Weindl, Jenni Adams, Xianwu Xu, Jay Gallagher, Minjin Jeong, K.-H. Becker, Ruth Hoffmann, Kwok Lung Fan, Alexander Fritz, Colin Turley, Erik Ganster, Najia Moureen Binte Amin, Uwe Naumann, T. Stanev, Yiqian Xu, Emma C. Hettinger, Matt Dunkman, Federico Bontempo, Nora Valtonen-Mattila, Marcos Santander, Francesco Lucarelli, Maria Liubarska, Ramesh Koirala, Dennis Soldin, Martin Ha Minh, Hans Dembinski, Erin Carnie-Bronca, Harald Schieler, K. Rawlins, Christian Glaser, Simona Toscano, Christian Spiering, Manuel Silva, Samvel Ter-Antonyan, Ben Jones, Alan Coleman, Gisela Anton, Maria Prado Rodriguez, Devyn Rysewyk Cantu, Gwenhaël de Wasseige, D. Z. Besson, Reina H. Maruyama, R. Halliday, Daniel Bindig, Georg Schwefer, L. Gerhardt, James Vincent Mead, Thomas Stuttard, Ryo Nagai, A. Olivas, E. Blaufuss, T. Stezelberger, Sarah Pieper, Markus Dittmer, Jannis Necker, Tetiana Kozynets, Neha Lad, Dirk Ryckbosch, Elizabeth Friedman, Chad Finley, Rasha Abbasi, Summer Blot, Matthias Boddenberg, Ibrahim Safa, Daria Pankova, Damian Pieloth, Ali Kheirandish, Sarah Mancina, Gerrit Roellinghoff, Stephan Meighen-Berger, Jannes Brostean-Kaiser, Kurt Woschnagg, Simon Hauser, Anna Franckowiak, Tobias Hoinka, Vedant Basu, James Madsen, Thorsten Glusenkamp, Massimiliano Lincetto, Lu Lu, Paul Evenson, S. Yoshida, I. Taboada, Dustin Hebecker, Nathan Whitehorn, Steve Sclafani, Klas Hultqvist, Joanna Kiryluk, Christoph Tönnis, Sally-Ann Browne, Brandom Pries, Mirco Hunnefeld, Marie Oehler, Segev BenZvi, Timothée Grégoire, Paras Koundal, Mike Richman, Colton Hill, Carlos Perez de los Heros, Gabriel Collin, Simone Garrappa, Dmitry Chirkin, Johan Wulff, Jan Weldert, Etienne Bourbeau, Spencer Klein, Julian Saffer, Chris Wendt, Sebastian Schindler, Michael Kovacevich, Pablo Correa, S. Tilav, Teresa Montaruli, Christoph Günther, Alexander Kappes, Michael Campana, Emily Dvorak, Cristian Jesus Lozano Mariscal, Kendall Mahn, K. Helbing, Elisa Bernardini, Tomas Kontrimas, Christian Dappen, Justin Vandenbroucke, Timothyblake Watson, Yijia Li, Sourav Sarkar, Benjamin Hokanson-Fasig, L. Halve, Philipp Eller, Christian Spannfellner, R. Morse, Frank McNally, Chunfai Tung, Olga Botner, Jakob Bottcher, Kara Hoffman, D. J. Koskinen, Antonio Augusto Alves Junior, Chujie Chen, Raffaela Busse, Anna Obertacke Pollmann, Yang Lyu, Joeran Stettner, Cristina Lagunas Gualda, Grant Parker, Philip Weigel, M. Plum, Mehmet Gunduz, Agnieszka Leszczyńska, R. C. Bay, Hershal Pandya, Martin Rongen, Wolfgang Rhode, Spencer Griswold, Maryon Ahrens, Joshua Hignight, Timo Sturwald, Frederik Tenholt, Wing Yan Ma, Feifei Huang, Hannah Erpenbeck, Konstancja Satalecka, Theo Glauch, Xinhua Bai, Austin Schneider, Abhishek Desai, Juan Carlos Diaz-Velez, Robert Stein, Maria Tselengidou, James DeLaunay, Marjon Moulai, Ava Ghadimi, Martin Wolf, Franziska Tischbein, Hans Niederhausen, Robert A. Cross, Frederik Hermann Lauber, Koun Choi, Andrew Ludwig, Justin Lanfranchi, Ben Smithers, Jean Pierre Twagirayezu, Jiwoong Lee, Rui An, Nahee Park, Darren Grant, Derek B Fox, Immacolata Carmen Rea, Sarah Nowicki, Andreas Haungs, Robert Snihur, C. H. Wiebusch, Kunal Deoskar, A. Karle, Ioana Codrina Maris, Sam De Ridder, Christoph Raab, Nadège Iovine, D. Berley, G. C. Hill, Bunheng Ty, Patrick Reichherzer, Ralph Engel, Moritz Kellermann, Giovanni Renzi, D. Seckel, Tyce DeYoung, George Japaridze, Roger Moore, Woosik Kang, Richard Naab, Marek Kowalski, Seongjin In, Elisa Resconi, Jan Conrad, K. Mase, Yuya Makino, Alessio Porcelli, Alexander A. Harnisch, Nick van Eijndhoven, Lew Classen, René Reimann, Leander Fischer, Thomas Ehrhardt, Christian Haack, Alexander Sandrock, Kirsten Tollefson, Kayla Leonard, Alexander Trettin, Sukeerthi Dharani, Francis Halzen, Lilly Peters, Juliana Stachurska, V Aswathi Balagopal, Gerrit Wrede, Johannes Werthebach, Thomas Huber, Ek Narayan Paudel, Michael J Larson, Allan Hallgren, Sandro Kopper, William Luszczak, M. Kauer, David Kappesser, Matti Jansson, P. Buford Price, Mark Weyrauch, Joakim Sandroos, Daniela Mockler, G. W. Sullivan, James E. Braun, Philipp Furst, Tim Ruhe, Paul Coppin, Andrea Turcati, Ella Roberts, Alex Pizzuto, Gary Binder, Xinyue Kang, Claudio Kopper, Subir Sarkar, and David Vannerom more...
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Physics ,Dark matter ,Detector ,Astronomy - Published
- 2021
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5. Lessons Learned Through Two Phases of Developing and Implementing a Technology Supporting Integrated Care: Case Study (Preprint)
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Stephanie Di Pelino, Larkin Lamarche, Tracey Carr, Julie Datta, Jessica Gaber, Doug Oliver, Jay Gallagher, Steven Dragos, David Price, and Dee Mangin
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BACKGROUND As health care becomes more fragmented, it is even more important to focus on the provision of integrated, coordinated care between health and social care systems. With the aging population, this coordination is even more vital. Information and communication technology (ICT) can support integrated care if the form of technology follows and supports functional integration. Health TAPESTRY (Teams Advancing Patient Experience: Strengthening Quality) is a program centered on the health of older adults, supported by volunteers, primary care teams, community engagement and connections, and an ICT known as the Health TAPESTRY application (TAP-App), a web-based application that supports volunteers in completing client surveys, volunteer coordinators in managing the volunteer program, and primary care teams in requesting and receiving information. OBJECTIVE This paper describes the development, evolution, and implementation of the TAP-App ICT to share the lessons learned. METHODS A case study was conducted with the TAP-App as the case and the perspectives of end users and stakeholders as the units of analysis. The data consisted of researchers’ perspectives on the TAP-App from their own experiences, as well as feedback from other stakeholders and end user groups. Data were collected through written retrospective reflection with the program manager, a specific interview with the technology lead, key emailed questions to the TAP-App developer, and viewpoints and feedback during paper drafting from other research team members. There were 2 iterations of Health TAPESTRY and the TAP-App and we focused on learnings from the second implementation (2018-2020) which was a pragmatic implementation scale-up trial using the Reach, Effectiveness, Adoption, Implementation, and Maintenance framework at 6 primary care sites across Ontario, Canada. RESULTS TAP-App (version 1.0), which was iteratively developed, was introduced as a tool to schedule volunteer and client visits and collect survey data using a tablet computer. TAP-App (version 2.0) was developed based on this initial experience and a desire for a program management tool that focused more on dual flow among users and provided better support for research. The themes of the lessons learned were as follows: iterative feedback is valuable; if ICT will be used for research, develop it with research in mind; prepare for challenges in the integration of ICT into the existing workflow; ask whether interoperability should be a goal; and know that technology cannot do it alone yet—the importance of human touch points. CONCLUSIONS Health TAPESTRY is human-centered. The TAP-App does not replace these elements but rather helps enable them. Despite this shift in supporting integrated care, barriers remained to the uptake of the TAP-App that would have allowed a full flow of information between health and social settings in supporting patient care. This indicates the need for an ongoing focus on the human use of ICT in similar programs. more...
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- 2021
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6. The IceCube realtime alert system
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B. J. P. Jones, Chris Wendt, S. Hickford, D. Tosi, M. Day, R. Konietz, M. Vehring, S. Coenders, Joshua Hignight, Francis Halzen, Karim Ghorbani, S. Seunarine, G. Merino, Spencer Axani, I. Ansseau, N. Wandkowsky, S. Schoenen, J. Kiryluk, M. Wolf, F. Bos, A. Terliuk, Sally Robertson, G. Krückl, Carlos Arguelles, M. Song, T. L. Carver, Mike Richman, H. Dembinski, Sebastian Böser, D. Heereman, P. Schlunder, R. Nahnhauer, M. Lesiak-Bzdak, Gisela Anton, V. di Lorenzo, Allan Hallgren, J. Tatar, M. J. Larson, Jae Yool Kim, M. Kauer, L. Classen, Kurt Woschnagg, T. Menne, Paul Evenson, L. Brayeur, C. Finley, Juanan Aguilar, Jenni Adams, Hrvoje Dujmovic, Janet Conrad, B. Relethford, Ignacio Taboada, A. Obertacke Pollmann, K. Rawlins, M. G. Aartsen, Michael Sutherland, K. Mase, T. Kittler, S. Flis, P. Peiffer, R. Cross, K. D. de Vries, George Japaridze, S. De Ridder, Dirk Lennarz, Konstancja Satalecka, Theo Glauch, M. Rongen, Gabriel Collin, Dmitry Chirkin, A. Franckowiak, D. Z. Besson, Marjon Moulai, James Madsen, Lu Lu, R. Maunu, E. Friedman, Alexander Kappes, R. G. Stokstad, Markus Ahlers, J. Kunnen, Jay Gallagher, T. Ehrhardt, N. van Eijndhoven, M. N. Tobin, A. Meli, C.-C. Fösig, M. van Rossem, M. Vraeghe, C. Haack, K. Meagher, Elisa Resconi, A. Steuer, Teresa Montaruli, M. J. Weiss, N. Kurahashi, B. J. Whelan, Todor Stanev, R. Hellauer, D. Bose, Kendall Mahn, N. L. Strotjohann, J. P. Dumm, M. Relich, A. Olivas, K. Helbing, T. Palczewski, H. Pandya, M. Bissok, K. Jero, A. Wallace, R. Reimann, E. Vogel, Maryon Ahrens, U. Katz, J. C. Díaz-Vélez, S. Kopper, E. Woolsey, G. Binder, Joshua Pepper, H. Niederhausen, Dawn Williams, F. Huang, M. Leuermann, G. de Wasseige, A. Turcati, U. Naumann, E. Hansen, M. E. Huber, B. Eberhardt, M. S. Kim, Samvel Ter-Antonyan, Aya Ishihara, D. Bindig, E. Jacobi, Elisa Bernardini, Segev BenZvi, G. Maggi, T. Schmidt, L. Wille, Y. Xu, J. Lünemann, M. Kowalski, S. E. Sanchez Herrera, Azadeh Keivani, Frederik Tenholt, M. Rameez, M. Medici, L. Gerhardt, D. F. Cowen, Albrecht Karle, S. Euler, T. Fuchs, T. Karg, Ch. Weaver, Alexander Burgman, W. Kang, Z. Griffith, S. Miarecki, J. van Santen, Kael Hanson, Thomas Meures, K. Krings, K. Clark, D. V. Pankova, F. McNally, G. W. Sullivan, M. Casier, B. Riedel, D. R. Nygren, S. Bron, Steven W. Barwick, M. Tselengidou, Thomas K. Gaisser, G. B. Yodh, Spencer Klein, A. Stasik, Stijn Vanheule, Philipp Eller, Maximilian Meier, T. Ruhe, S. Wickmann, J. Auffenberg, D. Hebecker, Paolo Desiati, A. Sandrock, T. Glüsenkamp, Gerald Przybylski, Minjin Jeong, G. Neer, T. Kintscher, Hermann Kolanoski, M. Labare, M. Quinnan, M. Dunkman, J. Felde, H. Taavola, Stijn Blot, Christian Spiering, S. Yoshida, Xinhua Bai, T. Hansmann, R. Hoffmann, Javier Gonzalez, M. Mandelartz, E. Blaufuss, Kara Hoffman, E. Pinat, Olga Botner, K. Wiebe, P. B. Price, V. Baum, D. J. Koskinen, D. Ryckbosch, Simona Toscano, M. Voge, Markus Ackermann, Donglian Xu, J. Becker Tjus, Ö. Penek, D. Soldin, L. Rädel, J. Stettner, Justin Vandenbroucke, K. Hoshina, E. del Pino Rosendo, Subir Sarkar, Glenn Spiczak, S. Schöneberg, K. H. Becker, E. Unger, D. Berley, W. Giang, J. L. Lanfranchi, Wolfgang Rhode, J. L. Kelley, S. In, S. C. Nowicki, L. Gladstone, R. Koirala, Darren Grant, J. P. A. M. de André, C. Walck, Sarah Mancina, Frederik Hermann Lauber, M. Börner, Klas Hultqvist, M. Zoll, K. Andeen, S. Westerhoff, A. Christov, M. Wallraff, T. Stezelberger, E. Cheung, M. Usner, L. Sabbatini, B. Eichmann, H.-P. Bretz, S. Tilav, Christian Bohm, Aongus O'Murchadha, J. P. Yanez, Christoph Raab, G. C. Hill, L. Schumacher, C. Krüger, A. Goldschmidt, R. C. Bay, D. Seckel, S. Fahey, S. Kunwar, M. Archinger, A. R. Fazely, Tyce DeYoung, P. A. Toale, M. Kroll, C. Kopper, J. Braun, T. R. Wood, J. J. Beatty, A. Bernhard, D. Rysewyk, A. Stößl, Reina H. Maruyama, Christopher Wiebusch, J. Feintzeig, Carsten Rott, Xianwu Xu, J. Sandroos, D. Altmann, C. Pérez de los Heros, R. Ström, T. Kuwabara, L. Wills, Damian Pieloth, Ali Kheirandish, L. Köpke, G. Kohnen, T. Anderson, C. De Clercq, G. Tešić, Kirill Filimonov, Physics, Elementary Particle Physics, Faculty of Sciences and Bioengineering Sciences, and Vriendenkring VUB more...
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HIGH-ENERGY NEUTRINOS ,TELESCOPE ,Astrophysics::High Energy Astrophysical Phenomena ,Multi-messenger astronomy ,Neutrino astronomy ,Neutrino detectors ,Transient sources ,Astronomy and Astrophysics ,pole ,FOS: Physical sciences ,01 natural sciences ,IceCube ,law.invention ,IceCube Neutrino Observatory ,Telescope ,SEARCHES ,CORE-COLLAPSE SUPERNOVAE ,law ,Observatory ,0103 physical sciences ,site ,010306 general physics ,Instrumentation and Methods for Astrophysics (astro-ph.IM) ,010303 astronomy & astrophysics ,High Energy Astrophysical Phenomena (astro-ph.HE) ,Physics ,background ,Event (computing) ,Astrophysics::Instrumentation and Methods for Astrophysics ,Astronomy ,PERFORMANCE ,sensitivity ,observatory ,Identification (information) ,electromagnetic ,Physics and Astronomy ,Neutrino detector ,ddc:540 ,High Energy Physics::Experiment ,Neutrino ,Astrophysics - High Energy Astrophysical Phenomena ,Astrophysics - Instrumentation and Methods for Astrophysics ,FOLLOW-UP - Abstract
Following the detection of high-energy astrophysical neutrinos in 2013, their origin is still unknown. Aiming for the identification of an electromagnetic counterpart of a rapidly fading source, we have implemented a realtime analysis framework for the IceCube neutrino observatory. Several analyses selecting neutrinos of astrophysical origin are now operating in realtime at the detector site in Antarctica and are producing alerts to the community to enable rapid follow-up observations. The goal of these observations is to locate the astrophysical objects responsible for these neutrino signals. This paper highlights the infrastructure in place both at the South Pole detector site and at IceCube facilities in the north that have enabled this fast follow-up program to be developed. Additionally, this paper presents the first realtime analyses to be activated within this framework, highlights their sensitivities to astrophysical neutrinos and background event rates, and presents an outlook for future discoveries., Comment: 33 pages, 9 figures, Published in Astroparticle Physics more...
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- 2017
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7. Measurement of Atmospheric Neutrino Oscillations at 6–56 GeV with IceCube DeepCore
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P. Schlunder, R. Hellauer, Sally Robertson, S. De Ridder, F. Bos, Dirk Lennarz, Gisela Anton, M. E. Huber, Allan Hallgren, L. Classen, T. Kittler, S. Flis, M. Labare, J. Werthebach, K. Clark, A. Wallace, Darren Grant, Sarah Nowicki, G. H. Collin, Piotr Kalaczyński, C. Pérez de los Heros, F. D. Wandler, M. Brenzke, J. P. A. M. de André, L. Gerhardt, Minjin Jeong, M. Vehring, D. F. Cowen, J. P. Barron, S. Yoshida, Stijn Vanheule, Maryon Ahrens, Frederik Tenholt, M. Rameez, M. Medici, A. Waza, Philipp Eller, Thomas Meures, E. Woolsey, G. Binder, P. B. Price, T. O. B. Schmidt, Francis Halzen, Joshua Pepper, Karim Ghorbani, S. Coenders, K. Helbing, Christian Spiering, Sarah Mancina, Spencer Axani, K. Jero, Joshua A. Wood, I. Ansseau, T. R. Wood, Kurt Woschnagg, Elisa Bernardini, A. Terliuk, Justin Vandenbroucke, Paul Evenson, S. Schöneberg, H. Dembinski, Frank McNally, Chunfai Tung, Klas Hultqvist, J. Kiryluk, J. Felde, Xinhua Bai, K. Andeen, E. Jacobi, A. Kyriacou, D. Berley, Benjamin Hokanson-Fasig, W. Giang, J. L. Lanfranchi, P. Nakarmi, Carlos Arguelles, Janet Conrad, Dmitry Chirkin, F. Bradascio, A. Obertacke Pollmann, I. Al Samarai, J. L. Kelley, Alexander Kappes, C. Walck, Jessie Micallef, R. Cross, M. Rongen, Joshua Hignight, K. Krings, M. S. Sutherland, M. Börner, Markus Ahlers, S. Tilav, U. Katz, E. Pinat, K. Rawlins, George Japaridze, Roger Moore, Ramesh Koirala, Dennis Soldin, A. Christov, William Luszczak, Frederik Hermann Lauber, Jenni Adams, S. Hickford, D. J. Koskinen, Simona Toscano, M. Kauer, M. Zoll, S. Westerhoff, James Madsen, J. Bourbeau, E. Blaufuss, Lu Lu, Donglian Xu, Yiqian Xu, J. Tatar, Samvel Ter-Antonyan, D. Bose, R. G. Stokstad, M. J. Larson, Seongjin In, Hermann Kolanoski, Elisa Resconi, M. N. Tobin, M. Song, T. L. Carver, Mike Richman, J. Becker Tjus, A. Stasik, J. P. Dumm, Subir Sarkar, E. Cheung, M. Usner, T. Palczewski, Dirk Ryckbosch, M. Day, C. Kopper, Teresa Montaruli, T. Karg, R. Maunu, T. Kuwabara, E. Vogel, M. Stamatikos, J. Braun, T. Stezelberger, Jan Soedingrekso, B. Eberhardt, Kendall Mahn, Jae Yool Kim, J. Stachurska, N. L. Strotjohann, T. Menne, L. Rädel, J. Casey, S. Schoenen, D. Bindig, A. Franckowiak, D. Heereman, B. Relethford, P. Peiffer, Konstancja Satalecka, Theo Glauch, A. Goldschmidt, Gerald Przybylski, Z. Griffith, Marjon Moulai, S. Kunwar, K. Meagher, Jay Gallagher, J. C. Díaz-Vélez, Azadeh Keivani, C. F. Turley, G. Krückl, Matthias Vraeghe, N. Kurahashi, B. J. Whelan, Todor Stanev, G. Tešić, T. Anderson, E. Friedman, A. Olivas, Delia Tosi, Mirco Hunnefeld, C. Wendt, F. Huang, M. Dunkman, G. de Wasseige, J. Stettner, D. R. Nygren, J. Lünemann, C. De Clercq, J. J. Beatty, Tianlu Yuan, K. Hoshina, M. Lesiak-Bzdak, R. Hoffmann, Glenn Spiczak, G. Momenté, M. Tselengidou, M. G. Aartsen, Thomas K. Gaisser, G. B. Yodh, U. Naumann, K. H. Becker, T. Kintscher, Marsha J. Wolf, E. Unger, Javier Gonzalez, D. Rysewyk, Giorgio Maggi, K. Wiebe, Marek Kowalski, David A. Williams, B. J. P. Jones, T. Sälzer, Markus Ackermann, A. Stößl, H. Bagherpour, Olga Botner, Reina H. Maruyama, M. Relich, V. Baum, Chris Weaver, G. Merino, Kirill Filimonov, M. Kroll, N. Wandkowsky, K. D. de Vries, H. Dujmovic, J. P. Koschinsky, R. Nahnhauer, L. Schumacher, Carsten Rott, D. V. Pankova, M. Casier, M. Leuermann, L. Wills, Surujhdeo Seunarine, G. Kohnen, J. P. Yanez, A. Steuer, Juanan Aguilar, N. van Eijndhoven, J. Kunnen, S. Böser, R. C. Bay, A. Ishihara, D. Z. Besson, Xianwu Xu, Damian Pieloth, J. Sandroos, D. Altmann, Austin Schneider, Ali Kheirandish, J. Auffenberg, W. Van Driessche, G. W. Sullivan, Jannes Brostean-Kaiser, T. Fuchs, L. Köpke, Albrecht Karle, L. Brayeur, I. Taboada, Segev BenZvi, Spencer Klein, Kara Hoffman, Won Nam Kang, Hershal Pandya, Wolfgang Rhode, J. J. DeLaunay, G. Neer, Tim Ruhe, J. van Santen, Kael Hanson, M. Plum, S. Bron, Steven W. Barwick, Maximilian Meier, Paolo Desiati, T. Ehrhardt, Alexander Sandrock, D. Hebecker, K. Mase, Andrea Turcati, Stijn Blot, C. Haack, M. J. Weiss, R. Reimann, S. Kopper, Christopher Wiebusch, Christian Bohm, Aongus O'Murchadha, Christoph Raab, G. C. Hill, Bunheng Ty, D. Seckel, S. Fahey, S. Miarecki, A. R. Fazely, Tyce DeYoung, P. A. Toale, Immacolata Carmen Rea, B. Eichmann, H.-P. Bretz, M. Kim, L. Wille, S. E. Sanchez Herrera, Hans Niederhausen, V. di Lorenzo, C. Finley, A. Burgman, Qinrui Liu, T. Glüsenkamp, M. Wallraff, Physics, Elementary Particle Physics, Vriendenkring VUB, Faculty of Sciences and Bioengineering Sciences, Massachusetts Institute of Technology. Department of Physics, Arguelles Delgado, Carlos A, Axani, Spencer Nicholas, Collin, G. H., Conrad, Janet Marie, Moulai, Marjon H., Al Samarai, Imen, Bron, Stéphanie, Carver, Tessa, Christov, Asen, and Montaruli, Teresa more...
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interaction [cosmic radiation] ,Physics::Instrumentation and Detectors ,Solar neutrino ,General Physics and Astronomy ,01 natural sciences ,7. Clean energy ,High Energy Physics - Experiment ,IceCube ,Subatomär fysik ,High Energy Physics - Experiment (hep-ex) ,Observatory ,Subatomic Physics ,TOOL ,Physics ,oscillation [neutrino] ,Astrophysics::Instrumentation and Methods for Astrophysics ,atmosphere [neutrino] ,threshold [energy] ,mass difference [neutrino] ,ddc ,observatory ,Neutrino detector ,Physique des particules élémentaires ,Astrophysics::Earth and Planetary Astrophysics ,Neutrino ,Particle physics ,cosmic radiation [neutrino] ,accelerator ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,ddc:500.2 ,Physics and Astronomy(all) ,IceCube Neutrino Observatory ,Physics and Astronomy (all) ,0103 physical sciences ,neutrino/mu ,ddc:530 ,energy: high [neutrino] ,010306 general physics ,Neutrino oscillation ,Astroparticle physics ,010308 nuclear & particles physics ,ICE ,High Energy Physics::Phenomenology ,Astronomy ,Solar neutrino problem ,Physics and Astronomy ,13. Climate action ,mass [neutrino] ,High Energy Physics::Experiment ,SYSTEM ,mixing angle [neutrino] ,experimental results - Abstract
We present a measurement of the atmospheric neutrino oscillation parameters using three years of data from the IceCube Neutrino Observatory. The DeepCore infill array in the center of IceCube enables the detection and reconstruction of neutrinos produced by the interaction of cosmic rays in Earth's atmosphere at energies as low as ∼5 GeV. That energy threshold permits measurements of muon neutrino disappearance, over a range of baselines up to the diameter of the Earth, probing the same range of L/Eν as long-baseline experiments but with substantially higher-energy neutrinos. This analysis uses neutrinos from the full sky with reconstructed energies from 5.6 to 56 GeV. We measure Δm322=2.31-0.13+0.11×10-3 eV2 and sin2θ23=0.51-0.09+0.07, assuming normal neutrino mass ordering. These results are consistent with, and of similar precision to, those from accelerator- and reactor-based experiments., 0, SCOPUS: ar.j, info:eu-repo/semantics/published more...
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- 2018
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8. Supersoft X-Ray Sources Identified with Be Binaries in the Magellanic Clouds
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Jay Gallagher, Encarni Romero-Colmenero, Marina Orio, Ralf Kotulla, Valentina Cracco, and Stefano Ciroi
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Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,stars: emission-line ,Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Compact star ,01 natural sciences ,law.invention ,010309 optics ,Atmosphere ,Telescope ,law ,0103 physical sciences ,Magellanic Clouds ,Astrophysics::Solar and Stellar Astrophysics ,Emission spectrum ,line: profiles ,stars: emission-line, Be ,techniques: spectroscopic ,010303 astronomy & astrophysics ,Solar and Stellar Astrophysics (astro-ph.SR) ,Astrophysics::Galaxy Astrophysics ,Physics ,X-ray ,White dwarf ,Astronomy and Astrophysics ,Be ,Astrophysics - Astrophysics of Galaxies ,Stars ,Supernova ,Astrophysics - Solar and Stellar Astrophysics ,Space and Planetary Science ,Astrophysics of Galaxies (astro-ph.GA) ,Astrophysics::Earth and Planetary Astrophysics - Abstract
We investigated four luminous supersoft X-ray sources (SSS) in the Magellanic Clouds suspected to have optical counterparts of Be spectral type. If the origin of the X-rays is in a very hot atmosphere heated by hydrogen burning in accreted envelopes of white dwarfs (WDs), like in the majority of SSS, these objects are close binaries, with very massive WD primaries. Using the South African Large Telescope (SALT), we obtained the first optical spectra of the proposed optical counterparts of two candidate Be stars associated with SUZAKU J0105-72 and XMMU J010147.5-715550, respectively a transient and a recurrent SSS, and confirmed the proposed Be classification and Small Magellanic Clouds membership. We also obtained new optical spectra of two other Be stars proposed as optical counterparts of the transient SSS XMMU J052016.0-692505 and MAXI-J0158-744. The optical spectra with double peaked emission line profiles, are typical of Be stars and present characteristics similar to many high mass X-ray binaries with excretion disks, truncated by the tidal interaction with a compact object. The presence of a massive WD that sporadically ignites nuclear burning, accreting only at certain orbital or evolutionary phases, explains the supersoft X-ray flares. We measured equivalent widths and distances between lines' peaks, and investigated the variability of the prominent emission lines' profiles. The excretion disks seem to be small in size, and are likely to be differentially rotating. We discuss possible future observations and the relevance of these objects as a new class of type Ia supernovae progenitors., Accepted for publication in teh Astrophysical Journal more...
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- 2018
9. PINGU: a vision for neutrino and particle physics at the South Pole
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A. Olivas, F. Huang, G. Neer, S. Euler, J. van Santen, M. Day, Kael Hanson, Janet Conrad, Hrvoje Dujmovic, Ignacio Taboada, Steven W. Barwick, Christian Bohm, D. Hebecker, Aongus O'Murchadha, Segev BenZvi, R. Cross, M. Wolf, M. Jurkovic, M. Rongen, M. Kauer, B. Relethford, Christian Spiering, Spencer Klein, Konstancja Satalecka, M. Song, T. L. Carver, Mike Richman, Maximilian Meier, Thomas Meures, Christoph Raab, Paolo Desiati, George Japaridze, M. Schimp, G. Krückl, P. Schlunder, Hermann Kolanoski, B. Hansmann, Roger Moore, G. C. Hill, E. Friedman, D. Tosi, H. Taavola, J. Lünemann, L. Brayeur, Sally Robertson, M. Kroll, S. Hickford, A. Meli, Kara Hoffman, K. D. de Vries, T. Ehrhardt, N. van Eijndhoven, Justin Vandenbroucke, M. Leuermann, E. Blaufuss, D. J. Boersma, K. Mase, Elisa Resconi, K. Hoshina, C. Krüger, Kurt Woschnagg, Paul Evenson, D. Seckel, S. Fahey, Sebastian Böser, M. Kowalski, G. H. Collin, C. Haack, M. J. Weiss, A. R. Fazely, Tyce DeYoung, P. A. Toale, S. Márka, M. Labare, U. Naumann, D. Berley, W. Giang, M. Quinnan, C. Kopper, J. Braun, T. Kittler, S. Flis, Glenn Spiczak, G. Golup, Gisela Anton, M. Dunkman, J. L. Lanfranchi, R. Reimann, Imre Bartos, Stijn Blot, K. Krings, M. Glagla, Karim Ghorbani, S. Seunarine, E. Pinat, Dmitry Chirkin, L. Mohrmann, R. Hoffmann, S. Kopper, Antonio Palazzo, Simona Toscano, M. Voge, Spencer Axani, M. Mandelartz, S. Coenders, T. R. Wood, S. C. Nowicki, T. C. Arlen, G. Merino, Wolfgang Rhode, N. Wandkowsky, Alexander Kappes, A. Christov, Minjin Jeong, J. L. Kelley, S. In, L. Gladstone, G. Karagiorgi, S. Mandalia, R. Koirala, Donglian Xu, R. Nahnhauer, Carlos Arguelles, S. Schoenen, J. J. Beatty, K. Abraham, L. Wills, Olga Botner, S. Miarecki, Christopher Wiebusch, J. Feintzeig, D. Heereman, A. Bernhard, M. Lesiak-Bzdak, Darren Grant, Juanan Aguilar, K. Wiebe, Azadeh Keivani, A. Haj Ismail, J. Kiryluk, F. Bos, Teppei Katori, K. H. Becker, E. Unger, D. Z. Besson, F. McNally, V. Baum, Francis Halzen, D. R. Nygren, Aya Ishihara, D. Rysewyk, Subir Sarkar, Allan Hallgren, D. V. Pankova, L. Classen, J. Haugen, K. Rawlins, I. Ansseau, M. J. Larson, A. Franckowiak, Marjon Moulai, S. Yoshida, M. Casier, B. Riedel, J. P. A. M. de André, M. Bissok, K. Jero, A. Stößl, A. Terliuk, E. Jacobi, M. G. Aartsen, S. Wickmann, J. Auffenberg, T. Stezelberger, T. Hansmann, G. W. Sullivan, M. H. Shaevitz, Reina H. Maruyama, A. Turcati, R. Maunu, J. Kunnen, Damian Pieloth, Ali Kheirandish, B. Eichmann, H. Dembinski, C. Walck, James Madsen, M. S. Kim, James Pinfold, Michael Sutherland, H.-P. Bretz, A. Stasik, N. L. Strotjohann, Lu Lu, Sarah Mancina, S. De Ridder, B. J. P. Jones, M. Stahlberg, L. Schumacher, A. Steuer, D. Bindig, M. van Rossem, Gerald Przybylski, T. Fuchs, Y. Xu, M. N. Tobin, E. Hansen, M. E. Huber, E. Pino del Rosendo, M. Börner, Klas Hultqvist, Z. Griffith, R. C. Bay, J. C. Díaz-Vélez, D. Bose, J. P. Dumm, M. Relich, K. Meagher, T. Karg, Ch. Weaver, L. Gerhardt, Maryon Ahrens, O. Kalekin, K. Andeen, Teresa Montaruli, P. Sandstrom, Frederik Tenholt, M. Rameez, M. Archinger, M. Medici, Kendall Mahn, Frederik Hermann Lauber, H. Niederhausen, L. Köpke, T. Palczewski, Julian Kemp, M. Zoll, G. Kohnen, Carsten Rott, G. Maggi, J. Tatar, S. Westerhoff, Albrecht Karle, M. Wallraff, Xianwu Xu, J. Sandroos, D. Altmann, P. Berghaus, T. Anderson, B. Eberhardt, C. De Clercq, C. Pérez de los Heros, R. Ström, G. Tešić, T. Kuwabara, Kirill Filimonov, D. J. Koskinen, Ö. Penek, S. Söldner-Rembold, Dirk Lennarz, Thorsten Glusenkamp, D. Soldin, S. Schöneberg, Z. Márka, K. Helbing, U. Katz, L. Rädel, Alexander Burgman, Hiroyuki Tanaka, Jenni Adams, Akimichi Taketa, J. Leuner, R. G. Stokstad, Killian Holzapfel, Chris Wendt, C.-C. Fösig, R. Konietz, M. Vehring, J. M. LoSecco, Joshua Hignight, H. Pandya, T. Kintscher, Javier Gonzalez, C. B. Krauss, E. Woolsey, G. Binder, Joshua Pepper, P. B. Price, D. Ryckbosch, Markus Ackermann, N. Kurahashi, B. J. Whelan, Todor Stanev, R. Hellauer, Dawn Williams, G. de Wasseige, Elisa Bernardini, M. Tselengidou, Thomas K. Gaisser, G. B. Yodh, J. Becker Tjus, J. Veenkamp, A. Goldschmidt, Troels Petersen, S. Kunwar, S. Wren, L. Sabbatini, T. Ruhe, S. Tilav, J. P. Yanez, T. Schmidt, L. Wille, S. E. Sanchez Herrera, E. Cheung, M. Usner, V. di Lorenzo, T. Menne, C. Finley, A. Wallace, K. Clark, D. F. Cowen, Stijn Vanheule, Philipp Eller, A. Sandrock, J. Felde, Xinhua Bai, A. Obertacke Pollmann, Markus Ahlers, M. Vraeghe, J. J. Evans, Samvel Ter-Antonyan, Jay Gallagher, Faculty of Sciences and Bioengineering Sciences, Physics, Vriendenkring VUB, and Elementary Particle Physics more...
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Physics - Instrumentation and Detectors ,Physics::Instrumentation and Detectors ,mixing [neutrino] ,atmospheric neutrinos ,IceCube Neutrino Observatory ,neutrino oscillations ,PINGU ,Nuclear and High Energy Physics ,pole ,7. Clean energy ,01 natural sciences ,IceCube ,High Energy Physics - Experiment ,Observatory ,Physics ,solar [WIMP] ,precision measurement ,Astrophysics::Instrumentation and Methods for Astrophysics ,oscillation [neutrino] ,solar [dark matter] ,atmosphere [neutrino] ,threshold [energy] ,mass difference [neutrino] ,observatory ,High Energy Physics - Phenomenology ,Upgrade ,Neutrino detector ,upgrade ,Neutrino ,KM3NET ,performance ,Particle physics ,supernova [neutrino] ,particle identification [neutrino/tau] ,Astrophysics::High Energy Astrophysical Phenomena ,SUPERNOVA DETECTION ,0103 physical sciences ,OSCILLATIONS ,mass: low [dark matter] ,unitarity ,ddc:530 ,010306 general physics ,Neutrino oscillation ,010308 nuclear & particles physics ,Astronomy ,sensitivity ,KM3NeT ,Physics and Astronomy ,mass [neutrino] ,beam [neutrino] ,High Energy Physics::Experiment ,galaxy ,ATMOSPHERIC NEUTRINOS ,MATTER ,SYSTEM ,Lepton ,mixing angle [neutrino] ,experimental results - Abstract
The Precision IceCube Next Generation Upgrade (PINGU) is a proposed low-energy in-fill extension to the IceCube Neutrino Observatory. With detection technology modeled closely on the successful IceCube example, PINGU will provide a 6Mton effective mass for neutrino detection with an energy threshold of a few GeV. With an unprecedented sample of over 60,000 atmospheric neutrinos per year in this energy range, PINGU will make highly competitive measurements of neutrino oscillation parameters in an energy range over an order of magnitude higher than long-baseline neutrino beam experiments. PINGU will measure the mixing parameters $\theta_{\rm 23}$ and $\Delta m^2_{\rm 32}$, including the octant of $\theta_{\rm 23}$ for a wide range of values, and determine the neutrino mass ordering at $3\sigma$ median significance within 4 years of operation. PINGU's high precision measurement of the rate of ${\nu_\tau}$ appearance will provide essential tests of the unitarity of the $3\times 3$ PMNS neutrino mixing matrix. PINGU will also improve the sensitivity of searches for low mass dark matter in the Sun, use neutrino tomography to directly probe the composition of the Earth's core, and improve IceCube's sensitivity to neutrinos from Galactic supernovae. Reoptimization of the PINGU design has permitted substantial reduction in both cost and logistical requirements while delivering performance nearly identical to configurations previously studied. This document summarizes the results of detailed studies described in a more comprehensive document to be released soon., Comment: 28 pages, 10 figures, submitted to J. Phys. G more...
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- 2017
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10. X-Ray Emission from the Nuclear Region of Arp 220
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W. Peter Maksym, Junfeng Wang, Margarita Karovska, Guido Risaliti, Martin Elvis, Giuseppina Fabbiano, Alessandro Paggi, Jay Gallagher, and Jonathan C. McDowell
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Physics ,galaxies: individual (Arp 220) ,010308 nuclear & particles physics ,Infrared ,galaxies: active ,X-ray ,FOS: Physical sciences ,Astronomy and Astrophysics ,Astrophysics ,Kinetic energy ,01 natural sciences ,Astrophysics - Astrophysics of Galaxies ,Interstellar medium ,X-rays: galaxies ,Space and Planetary Science ,Astrophysics of Galaxies (astro-ph.GA) ,0103 physical sciences ,Content (measure theory) ,galaxies: interactions ,Spectral analysis ,010303 astronomy & astrophysics ,Equivalent width ,Line (formation) - Abstract
We present an imaging and spectral analysis of the nuclear region of the ULIRG merger Arp 220, using deep \textit{Chandra}-ACIS observations summing up to \(\sim 300\mbox{ ks}\). Narrow-band imaging with sub-pixel resolution of the innermost nuclear region reveals two distinct Fe-K emitting sources, coincident with the infrared and radio nuclear clusters. These sources are separated by 1' (\(\sim 380\) pc). The X-ray emission is extended and elongated in the eastern nucleus, like the disk emission observed in millimeter radio images, suggesting starburst dominance in this region. We estimate Fe-K equivalent width \(\gtrsim 1\) keV for both sources, and observed 2-10 keV luminosities \(\sim 2\times{10}^{40}\mbox{ erg}\mbox{ s}^{-1}\) (W) and \(\sim 3 \times {10}^{40}\mbox{ erg}\mbox{ s}^{-1}\) (E). In the 6-7 keV band the emission from these regions is dominated by the 6.7 keV Fe \textsc{xxv} line, suggesting contribution from collisionally ionized gas. The thermal energy content of this gas is consistent with kinetic energy injection in the interstellar medium by Type II SNe. However, nuclear winds from hidden AGN (\(\varv\sim 2000 \mbox{ km}\mbox{ s}^{-1}\)) cannot be excluded. The \(3��\) upper limits on the neutral Fe-K\(��\) flux of the nuclear regions correspond to intrinsic AGN 2-10 keV luminosities \(< 1\times {10}^{42}\mbox{ erg}\mbox{ s}^{-1}\) (W) and \(< 0.4\times {10}^{42}\mbox{ erg}\mbox{ s}^{-1}\) (E). For typical AGN SEDs the bolometric luminosities are \(< 3\times {10}^{43}\mbox{ erg}\mbox{ s}^{-1}\) (W) and \(< 8\times {10}^{43}\mbox{ erg}\mbox{ s}^{-1}\) (E), and black hole masses \(, 13 pages, 9 figures, accepted for publication on ApJ. arXiv admin note: text overlap with arXiv:1303.2630 more...
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- 2017
11. Calibration and Characterization of the IceCube Photomultiplier Tube
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Ignacio Taboada, C. Pérez de los Heros, F. Rothmaier, Peter Mészáros, Matthias Geisler, Todor Stanev, Dawn Williams, M. R. Duvoort, Darren Grant, B. Ruzybayev, F. Descamps, A. Slipak, S. Tilav, H. Miyamoto, Jay Gallagher, J. van Santen, Y. Hasegawa, P. Nießen, A. Tepe, R. L. Imlay, M. Labare, G. Wikström, T. Griesel, R. Franke, C. Walck, A. Schukraft, K. Laihem, R. Ehrlich, Dirk Ryckbosch, K. Beattie, O. Schulz, Thomas K. Gaisser, G. B. Yodh, K. Wiebe, Christian Bohm, M. Krasberg, M. V. D'Agostino, Axel Groß, Q. Swillens, David A. Schneider, A. Olivas, John Clem, Jon Dumm, A. Goldschmidt, G. C. Hill, M. Matusik, M. Prikockis, T. Waldenmaier, Joanna Kiryluk, Michael J. Baker, J. Dreyer, S. Seunarine, J. M. Joseph, A. Laundrie, G. Stephens, Spencer Klein, S. Westerhoff, P. B. Price, Thomas Meures, L. Gladstone, J. J. Beatty, D. Seckel, O. Tarasova, A. Piegsa, Jenni Adams, M. Danninger, A. R. Fazely, P. A. Toale, Klas Hultqvist, N. Milke, C. Ha, Kara Hoffman, Y. Sestayo, M. Merck, H. Landsman, M. L. Benabderrahmane, D. Rutledge, S. Yoshida, J. Posselt, M. Walter, A. Rizzo, Stijn Buitink, T. O. B. Schmidt, George Japaridze, J.-P. Hülß, T. Kowarik, Christian Spiering, Carsten Rott, P. Roth, R. Nahnhauer, Dave Nygren, H. S. Matis, S. H. Seo, N. van Eijndhoven, S. Knops, Justin Vandenbroucke, R. J. Lauer, M. Bissok, O. Engdegård, Paraic A. Kenny, Juanan Aguilar, A. Tamburro, Takao Kuwabara, N. Kitamura, D. Wahl, K. Mase, Reina H. Maruyama, Kurt Woschnagg, Paul Evenson, Wolfgang Rhode, Karen Andeen, D. Berley, C. De Clercq, S. Hickford, R. G. Stokstad, B. Voigt, Xinhua Bai, Christopher Wiebusch, Xianwu Xu, R. Morse, P. Robl, B. Christy, D. Turcan, Francis Halzen, L. Demirörs, J. L. Kelley, Laura C. Bradley, P. Zarzhitsky, P. Berghaus, S. Schlenstedt, O. Depaepe, G. Kroll, Markus Ahlers, K. Rawlins, R. Wischnewski, E. Blaufuss, S. Euler, S. Stoyanov, Dmitry Chirkin, R. Lehmann, P. O. Hulth, J. Eisch, G. de Vries-Uiterweerd, B. Semburg, A. Van Overloop, C. Terranova, O. Fadiran, G. W. Sullivan, Alexander Kappes, A.C. Pohl, Damian Pieloth, H. Wissing, J. Lünemann, S. M. Movit, R. Porrata, James Madsen, T. Krings, D. Hubert, Elisa Resconi, Nathan Whitehorn, E. A. Strahler, J. Berdermann, Ph. Herquet, R. C. Bay, R. W. Ellsworth, Samvel Ter-Antonyan, S. Cohen, M. Ono, D. J. Boersma, T. DeYoung, J. L. Bazo Alba, Kael Hanson, J. K. Becker, T. Abu-Zayyad, J. W. Nam, Hermann Kolanoski, A. Schultes, L. Köpke, T. Straszheim, Pratik Majumdar, H. G. Sander, S. Odrowski, A. Homeier, N. Kemming, James E. Braun, C. Colnard, M. M. Foerster, Larissa Paul, Aya Ishihara, S. Bechet, T. Feusels, Steven W. Barwick, S.J. Lafebre, P. Redl, J. E. Jacobsen, Teresa Montaruli, P. Sandstrom, Allan Hallgren, Paolo Desiati, J. Auffenberg, L. Gerhardt, Rasha Abbasi, Chun Xu, R. Ganugapati, K. Hoshina, E. Middell, Elisa Bernardini, Karl-Heinz Kampert, D. F. Cowen, Kirill Filimonov, Glenn Spiczak, Chris Wendt, Albrecht Karle, M. Kowalski, M. Ribordy, Chad Finley, Subir Sarkar, U. Naumann, A. Silvestri, K. H. Becker, J. P. Rodrigues, T. Stezelberger, J. Petrovic, R. M. Gunasingha, Michael Stamatikos, K. Meagher, S. Hussain, D. J. Koskinen, M. Olivo, J. A. Goodman, S. Grullon, M. J. Carson, S. Panknin, Y. Abdou, Fabian Kislat, J. C. Díaz-Vélez, Timo Karg, D. Z. Besson, J. Haugen, M. Schunck, C. Roucelle, K. Kuehn, D. Bertrand, M. Wallraff, M. Gurtner, B. D. Fox, Dirk Lennarz, Henrik J. Johansson, W. Huelsnitz, K. Helbing, Anna Franckowiak, K. Schatto, G. Kohnen, D. Tosi, Gerald Przybylski, M. Inaba, K. Han, Olga Botner, Max-Planck-Institut für Kernphysik (MPIK), Max-Planck-Gesellschaft, AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS) more...
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Nuclear and High Energy Physics ,Photomultiplier ,[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE] ,Photon ,Physics::Instrumentation and Detectors ,[SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,Cosmic ray ,Context (language use) ,Astrophysics ,Aetiology, screening and detection [ONCOL 5] ,01 natural sciences ,IceCube Neutrino Observatory ,[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] ,Optics ,0103 physical sciences ,Neutrino ,Cherenkov ,ddc:530 ,Instrumentation and Methods for Astrophysics (astro-ph.IM) ,010303 astronomy & astrophysics ,Instrumentation ,Cosmic rays ,Cherenkov radiation ,Physics ,Ice ,PMT ,010308 nuclear & particles physics ,business.industry ,[SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE] ,Astrophysics::Instrumentation and Methods for Astrophysics ,Photonics ,Astrophysics - Instrumentation and Methods for Astrophysics ,business - Abstract
Over 5,000 PMTs are being deployed at the South Pole to compose the IceCube neutrino observatory. Many are placed deep in the ice to detect Cherenkov light emitted by the products of high-energy neutrino interactions, and others are frozen into tanks on the surface to detect particles from atmospheric cosmic ray showers. IceCube is using the 10-inch diameter R7081-02 made by Hamamatsu Photonics. This paper describes the laboratory characterization and calibration of these PMTs before deployment. PMTs were illuminated with pulses ranging from single photons to saturation level. Parameterizations are given for the single photoelectron charge spectrum and the saturation behavior. Time resolution, late pulses and afterpulses are characterized. Because the PMTs are relatively large, the cathode sensitivity uniformity was measured. The absolute photon detection efficiency was calibrated using Rayleigh-scattered photons from a nitrogen laser. Measured characteristics are discussed in the context of their relevance to IceCube event reconstruction and simulation efforts., 40 pages, 12 figures more...
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- 2016
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12. Chemical and physical parameters from X-ray high resolution spectra of the Galactic nova V959 Mon
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Polina Zemko, Marina Orio, U. Peretz, B. Tofflemire, Thomas Rauch, Antonio Bianchini, Jay Gallagher, and Ehud Behar
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Physics ,High Energy Astrophysical Phenomena (astro-ph.HE) ,Continuum (design consultancy) ,White dwarf ,Flux ,FOS: Physical sciences ,Astronomy and Astrophysics ,Nova (laser) ,Astrophysics ,Effective temperature ,Orbital period ,01 natural sciences ,Astrophysics - Solar and Stellar Astrophysics ,13. Climate action ,Space and Planetary Science ,0103 physical sciences ,Emission spectrum ,010306 general physics ,Ejecta ,Astrophysics - High Energy Astrophysical Phenomena ,010303 astronomy & astrophysics ,Solar and Stellar Astrophysics (astro-ph.SR) - Abstract
Two observations of V959 Mon, done using the Chandra X-ray gratings during the late outburst phases (2012 September and December), offer extraordinary insight into the physics and chemistry of this Galactic ONe nova. the X-ray flux was 1.7 x 10(-11) erg/cm(2)/s and 8.6 x 10(-12) erg/cm(2)/s, respectively at the two epochs. The first result, coupled with electron density diagnostics and compared with published optical and ultraviolet observations, indicates that most likely in 2012 September the X-rays originate from a very small fraction of the ejecta, concentrated in very dense clumps. We obtained a fairly good fit to the September spectrum with a model of plasma in collisional ionization equilibrium (CIE) with two components; one at a temperature of 0.78 keV, blueshifted by 710-930 km/s, the other at a temperature of 4.5 keV, mostly contributing to the high-energy continuum. However, we cannot rule out a range of plasma temperatures between these two extremes. In December, the central white dwarf (WD) became visible in X-rays. We estimate an effective temperature of about 680,000 K, consistent with a WD mass ~1.1 M(sol). The WD flux is modulated with the orbital period, indicating high inclination, and two quasi-periodic modulations with hour timescales were also observed. No hot plasma component with temperature above 0.5 keV was observed in December, and the blue-shifted component cooled to kT~0.45 keV. Additionally, new emission lines due to a much cooler plasma appeared, which were not observed two months earlier. We estimate abundances and yields of elements in the nova wind that cannot be measured in the optical spectra and confirm the high Ne abundance previously derived for this nova. We also find high abundance of Al, 230 times the solar value, consistently with the prediction that ONe novae contribute to at least 1/3rd of the Galactic yield of Al(26)., In press, Astrophysical Journal 2016 more...
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- 2016
13. A precessing molecular jet signaling an obscured, growing supermassive black hole in NGC 1377?
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Aaron S. Evans, P. van der Werf, Francesco Costagliola, Kalliopi Dasyra, Jari Kotilainen, Santiago García-Burillo, Francoise Combes, Keiichi Wada, Lars E. Kristensen, Kazushi Sakamoto, Sebastien Muller, Jay Gallagher, Susanne Aalto, Sergio Martín, Chalmers University of Technology [Göteborg], Immunologie et chimie thérapeutiques (ICT), Cancéropôle du Grand Est-Centre National de la Recherche Scientifique (CNRS), Institut de biologie et chimie des protéines [Lyon] (IBCP), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), Chaire Galaxies et cosmologie, Collège de France (CdF (institution)), Observatorio Astronomico Nacional [Madrid] (OAN), Instituto Geografico Nacional (IGN), Danish Meat Research Institute (DMRI), Leiden Observatory [Leiden], Universiteit Leiden [Leiden], Aberystwyth University, Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Paris (ENS-PSL), Collège de France - Chaire Galaxies et cosmologie, Observatorio Astronomico Nacional, Madrid, Universiteit Leiden, École normale supérieure - Paris (ENS Paris)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, and PSL Research University (PSL)-PSL Research University (PSL)-Université de Cergy Pontoise (UCP) more...
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Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,Flux ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,01 natural sciences ,0103 physical sciences ,Astrophysics::Solar and Stellar Astrophysics ,Protostar ,010306 general physics ,010303 astronomy & astrophysics ,Astrophysics::Galaxy Astrophysics ,ComputingMilieux_MISCELLANEOUS ,Physics ,[PHYS]Physics [physics] ,Jet (fluid) ,Supermassive black hole ,Accretion (meteorology) ,Astronomy and Astrophysics ,Radius ,Astrophysics - Astrophysics of Galaxies ,Galaxy ,13. Climate action ,Space and Planetary Science ,Astrophysics of Galaxies (astro-ph.GA) ,Outflow ,[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] - Abstract
With high resolution (0."25 x 0."18) ALMA CO 3-2 observations of the nearby (D=21 Mpc, 1"=102 pc), extremely radio-quiet galaxy NGC1377, we have discovered a high-velocity, very collimated nuclear outflow which we interpret as a molecular jet with a projected length of +-150 pc. Along the jet axis we find strong velocity reversals where the projected velocity swings from -150 km/s to +150 km/s. A simple model of a molecular jet precessing around an axis close to the plane of the sky can reproduce the observations. The velocity of the outflowing gas is difficult to constrain due to the velocity reversals but we estimate it to be between 240 and 850 km/s and the jet to precess with a period P=0.3-1.1 Myr. The CO emission is clumpy along the jet and the total molecular mass in the high-velocity (+-(60 to 150 km/s)) gas lies between 2e6 Msun (light jet) and 2e7 Msun (massive jet). There is also CO emission extending along the minor axis of NGC1377. It holds >40% of the flux in NGC1377 and may be a slower, wide-angle molecular outflow which is partially entrained by the molecular jet. We discuss the driving mechanism of the molecular jet and suggest that it is either powered by a very faint radio jet or by an accretion disk-wind similar to those found towards protostars. The nucleus of NGC1377 harbours intense embedded activity and we detect emission from vibrationally excited HCN J=4-3 v_2=1f which is consistent with hot gas and dust. We find large columns of H2 in the centre of NGC1377 which may be a sign of a high rate of recent gas infall. The dynamical age of the molecular jet is short (, This is a revised and expanded version of a previous submission which now has 13 pages, 6 figures (+ 4 in the Appendix) and is accepted for publication in Astronomy & Astrophysics more...
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- 2016
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14. An absence of neutrinos associated with cosmic-ray acceleration in gamma-ray bursts
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C. Walck, Todor Stanev, Dawn Williams, S. Hussain, J. W. Nam, F. Descamps, M. W. E. Smith, D. J. Koskinen, P. Berghaus, S. Boeser, S. Japaridze, S. Odrowski, Timo Karg, H. Landsman, R. Franke, S. Euler, S. Flis, H. A. B. Johansson, Christian Bohm, Aongus O'Murchadha, Jon Dumm, T. Waldenmaier, S. Westerhoff, Thomas K. Gaisser, G. B. Yodh, J. J. Beatty, S. Seunarine, M. Kowalski, A. Gross, Damian Pieloth, A. M. Brown, P. B. Price, K. Hoshina, H. S. Matis, L. Koepke, M. Danninger, D. Heereman, M. V. D'Agostino, G. C. Hill, J. Posselt, M. Stamatikos, D. Z. Besson, T. O. B. Schmidt, Glenn Spiczak, Larissa Paul, L. Schulte, Chris Wendt, T. Kowarik, D. Rutledge, M. Labare, Albrecht Karle, M. Schunck, Michael J. Baker, Klas Hultqvist, A. Marotta, D. Altmann, U. Naumann, K. Meagher, T. R. Wood, J. Kiryluk, Thomas Meures, N. van Eijndhoven, L. Gladstone, M. Richman, Francis Halzen, Reina H. Maruyama, K. H. Becker, Dirk Heinen, D. Seckel, S. Miarecki, P. Zarzhitsky, A. Piegsa, Kurt Woschnagg, Paul Evenson, Xinhua Bai, A. Goldschmidt, F. Rothmaier, Segev BenZvi, Carsten Rott, Dave Nygren, J. Miller, Spencer Klein, R. J. Lauer, O. Fadiran, M. Bissok, Markus Ahlers, A. R. Fazely, Tyce DeYoung, C. DeClercq, P. A. Toale, Hermann Kolanoski, J. A. Goodman, A. Silvestri, K. Mase, M. Merck, Xianwu Xu, G. Kroll, T. Degner, K. Rawlins, R. Hellauer, J. P. Huelss, M. L. Benabderrahmane, Darren Grant, Dmitry Chirkin, Jay Gallagher, R. Nahnhauer, Karen S. Caballero-Mora, Kara Hoffman, Y. Sestayo, Karen Andeen, S. Grullon, M. J. Carson, A. H. Cruz Silva, N. Milke, Jenni Adams, S. Schoeneberg, Sarah Nowicki, Alexander Kappes, C. Pérez de los Heros, Samvel Ter-Antonyan, James Madsen, A. Olivas, M. J. Larson, A. Homeier, S. Panknin, R. Stroem, Fabian Kislat, A. Stoessl, Markus Ackermann, J. Dreyer, S. Tilav, A. Schultes, O. Engdegård, J. C. Díaz-Vélez, Juanan Aguilar, Wolfgang Rhode, T. Gluesenkamp, Takao Kuwabara, Simona Toscano, R. Wasserman, Y. Abdou, Christopher Wiebusch, Nathan Whitehorn, S. Hickford, A. Schoenwald, A. Van Overloop, Kael Hanson, W. Huelsnitz, J. Daughhetee, Christian Spiering, T. Griesel, B. Christy, Seth M. Cohen, R. W. Ellsworth, Donglian Xu, K. Wiebe, A. Franckowiak, R. G. Stokstad, R. Wischnewski, Matt Dunkman, Steven W. Barwick, Teresa Montaruli, K. Helbing, T. Abu-Zayyad, T. Fischer-Wasels, Elisa Resconi, S. Bechet, B. Hoffmann, Dariusz Gora, Anatoli Fedynitch, A. Schukraft, K. Laihem, J. L. Bazo Alba, J. Berdermann, D. Bose, E. Jacobi, J. Luenemann, H. Taavola, J. Feintzeig, Dirk Ryckbosch, Subir Sarkar, P. Redl, M. Olivo, Paolo Desiati, T. Feusels, D. Berley, E. A. Strahler, Ignacio Taboada, E. Blaufuss, J. C. Davis, K. Beattie, O. Schulz, E. Middell, Elisa Bernardini, D. J. Boersma, M. Krasberg, J. E. Jacobsen, Marcos Santander, M. Ribordy, L. Gerhardt, J. P. Rodrigues, Matthias Wolf, T. Stezelberger, K. Han, Michael S. Bell, Kirill Filimonov, M. Vehring, D. F. Cowen, R. C. Bay, B. Ruzybayev, C. Ha, S. Yoshida, M. Casier, G. W. Sullivan, P. Meszaros, J. K. Becker, Allan Hallgren, Sandro Kopper, S. M. Movit, H. G. Sander, C. Colnard, Aya Ishihara, Rasha Abbasi, Chun Xu, Ch. Weaver, Chad Finley, M. Stueer, K. Schatto, G. Kohnen, J. Blumenthal, P. O. Hulth, J. Eisch, G. de Vries-Uiterweerd, Olga Botner, D. Tosi, B. Semburg, H. Wissing, Stijn Buitink, J. Auffenberg, Daniel Bindig, Gerald Przybylski, R. Morse, M. Zoll, Benedikt Riedel, Tim Ruhe, M. Walter, A. Rizzo, S. H. Seo, J. H. Koehne, F. Clevermann, J. P. Yanez, A. Haj Ismail, A. Tamburro, L. Brayeur, J. van Santen, J. Kunnen, Naoko Kurahashi, D. Bertrand, M. Wallraff, M. Voge, M. Gurtner, M. Dierckxsens, Physics, Elementary Particle Physics, Aguilar Sanchez, Juan, and Montaruli, Teresa more...
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Physics::Instrumentation and Detectors ,Astronomy ,Astrophysics::High Energy Astrophysical Phenomena ,Electronvolt ,FOS: Physical sciences ,Flux ,high-energy neutrinos ,Cosmic ray ,ddc:500.2 ,Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,7. Clean energy ,01 natural sciences ,ddc:070 ,Icecube ,Acceleration ,Pion ,cosmic rays ,0103 physical sciences ,Telescope ,010303 astronomy & astrophysics ,Very Energetic ,High Energy Astrophysical Phenomena (astro-ph.HE) ,Physics ,Multidisciplinary ,010308 nuclear & particles physics ,High Energy Physics::Phenomenology ,Search ,Astrophysics::Instrumentation and Methods for Astrophysics ,13. Climate action ,Gamma Ray Bursts ,High Energy Physics::Experiment ,Neutrino ,Gamma-ray burst ,Astrophysics - High Energy Astrophysical Phenomena - Abstract
Gamma-Ray Bursts (GRBs) have been proposed as a leading candidate for acceleration of ultra high-energy cosmic rays, which would be accompanied by emission of TeV neutrinos produced in proton-photon interactions during acceleration in the GRB fireball. Two analyses using data from two years of the IceCube detector produced no evidence for this neutrino emission, placing strong constraints on models of neutrino and cosmic-ray production in these sources., 6 pages, 4 figures. Additional supplementary information (effective areas) is freely available with the published version. Version 2 supersedes the published version and fixes a small overestimation of the event rate from the Guetta et al. model in the 2010-2011 part of the model-dependent analysis, resulting in a new Fig. 1. Conclusions and all final results are unchanged. more...
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- 2012
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15. Near-IR age-dating of red supergiant-dominated stellar populations
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Ariane Lançon, Moustapha Mouhcine, D. Ladjal, Linda J. Smith, Richard de Grijs, and Jay Gallagher
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Physics ,Metallicity ,Astronomy ,Astronomy and Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,Astronomical spectroscopy ,Cosmology ,Spectral line ,Galaxy ,Star cluster ,Space and Planetary Science ,Astrophysics::Solar and Stellar Astrophysics ,Red supergiant ,Astrophysics::Earth and Planetary Astrophysics ,Spectroscopy ,Astrophysics::Galaxy Astrophysics - Abstract
We present new spectral synthesis models for solar metallicity stellar populations, based on a library of stellar spectra that extends across near-IR wavelengths out to 2.4 µm at a resolution approaching 1000. We show that the spectra of massive star clusters in the starburst galaxy M 82 can be reproduced very well with these models. We compare near-IR spectroscopic ages with optical ages, and discuss the main sources of (systematic) errors that still affect those ages. more...
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- 2009
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16. Mapping the roots of the galactic outflow in NGC1569
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Linda J. Smith, Katrina Exter, M. S. Westmoquette, and Jay Gallagher
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Physics ,H II region ,Astrophysics::High Energy Astrophysical Phenomena ,Astronomy ,Astronomy and Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,Galaxy ,Cosmology ,Interstellar medium ,Space and Planetary Science ,Cluster (physics) ,Astrophysics::Solar and Stellar Astrophysics ,Outflow ,Emission spectrum ,Astrophysics::Galaxy Astrophysics ,Line (formation) - Abstract
The exact nature of the interaction between hot, fast-flowing star-cluster winds and the surrounding clumpy interstellar medium (ISM) in starburst galaxies has very few observational constraints. Besides furthering our knowledge of ISM dynamics, detailed observations of ionised gas at the very roots of large-scale outflows are required to place limits on the current generation of high-resolution galactic wind models. To this end, we conduct a detailed investigation of the ionised gas environment surrounding the young star clusters in the starburst galaxy NGC1569. Using high spatial and spectral-resolution Gemini/GMOS integral-field unit observations, we accurately characterise the line-profile shapes of the optical nebular emission lines and find a ubiquitous broad (∼300 km s−1) component underlying a bright narrower component. By mapping the properties of the individual line components, we find correlations that suggest that the broad component results from powerful cluster wind–gas clump interactions. We propose a model to explain the properties of the line components and the general turbulent state of the ISM. more...
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- 2009
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17. The Magellanic System: Stars, Gas, and Galaxies
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Jay Gallagher and Joss Bland-Hawthorn
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Physics ,Stars ,Space and Planetary Science ,Astronomy ,Astronomy and Astrophysics ,Astrophysics ,Key issues ,Galaxy - Abstract
We provide a brief overview of some key issues that came out of the IAUS 256 symposium on the Magellanic System (http://www.astro.keele.ac.uk/iaus256).
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- 2008
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18. Time resolved star formation in the SMC: the youngest star clusters
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Linda J. Smith, Elena Sabbi, Michele Cignoni, Antonella Nota, Lynn Redding Carlson, Jay Gallagher, Marco Sirianni, Margaret Meixner, and Monica Tosi
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Physics ,Star formation ,Stars: formation ,Astronomy ,Astronomy and Astrophysics ,Stars: luminosity function ,Astrophysics ,Galaxies: individual (SMC) ,Galaxies: star clusters ,Magellanic Clouds ,Mass function ,Stars: pre-main-sequence ,Star cluster ,Space and Planetary Science - Abstract
The two young clusters NGC 346 and NGC 602 in the Small Magellanic Cloud provide us with the opportunity to study and the efficiency of feedback mechanism at low metallicity, as well as the impact of local and global conditions in cluster formation and evolution. I describe the latest results from a multi-wavelength, large-scale study of these two clusters. HST/ACS images reveal that the clusters have very different structures: NGC 346 is composed by a number of sub-clusters which appear coeval with ages of 3 ± 1 Myr, strongly suggesting formation by the hierarchical fragmentation of a turbulent molecular cloud (Nota et al. 2006; Sabbi et al. 2007a). NGC 602, on the contrary, appears as a single small cluster of OB stars surrounded by pre-main sequence stars. For both clusters high-resolution spectroscopy of the ionized gas shows little evidence for gas motions. This suggests that at the low SMC metallicity, the winds from the hottest stars are not powerful enough to sweep away the residual gas. Instead we find that stellar radiation is the dominant process shaping the interstellar environment of NGC 346 and NGC 602. more...
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- 2008
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19. Young Star Clusters in the Small Magellanic Cloud: Impact of Local and Global Conditions on Star Formation
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Linda J. Smith, Jay Gallagher, Marco Sirianni, Margaret Meixner, Lynn Redding Carlson, Monca Tosi, Antonella Nota, Elena Sabbi, and Michele Cignoni
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Physics ,Intergalactic star ,Star formation ,Stars: formation ,Astrophysics::High Energy Astrophysical Phenomena ,Molecular cloud ,Astronomy ,Astronomy and Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,Galaxies: star clusters ,Advanced Camera for Surveys ,Star cluster ,Spitzer Space Telescope ,Space and Planetary Science ,Magellanic Clouds ,Astrophysics::Solar and Stellar Astrophysics ,Astrophysics::Earth and Planetary Astrophysics ,Small Magellanic Cloud ,Stars: mass function ,Stars: pre-main-sequence ,Spectrograph ,Astrophysics::Galaxy Astrophysics - Abstract
We compared deep images acquired with the Advanced Camera for Surveys on board of the Hubble Space Telescope with mid-IR Spitzer Space Telescope images and University College London Echelle Spectrograph spectra of NGC 346 and NGC 602, two of the youngest star clusters in the Small Magellanic Cloud. Our multi-wavelength approach allowed us to infer very different origins for the clusters: while NGC 346 is likely the result of the hierarchical collapse of a giant molecular cloud, NGC 602 is probably the result of the collision and consequent interaction of two H I shells of gas. more...
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- 2008
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20. The connection between globular cluster systems and their host galaxy and environment: a case study of the isolated elliptical NGC 821★
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Jean P. Brodie, Duncan A. Forbes, Jay Strader, Lee R. Spitler, and Jay Gallagher
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Physics ,Spiral galaxy ,Stellar mass ,010308 nuclear & particles physics ,Astronomy and Astrophysics ,Context (language use) ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,01 natural sciences ,Galaxy ,Spitzer Space Telescope ,Space and Planetary Science ,Globular cluster ,0103 physical sciences ,Galaxy formation and evolution ,Elliptical galaxy ,010303 astronomy & astrophysics ,Astrophysics::Galaxy Astrophysics - Abstract
In an effort to probe the globular cluster (GC) system of an isolated elliptical galaxy, a comprehensive analysis of the NGC 821 GC system was performed. New imaging from the WIYN Mini-Mosaic imager, supplemented with Hubbl e Space Telescope (HST) WFPC2 images reveals a GC system similar to those found in counterpart ellipticals located in high-density environments. To put these results into the context of galaxy formation, a robustly-determined census of GC systems is presented and analysed for galaxies spanning a wide range of masses (> M_star), morphologies and environments. Results from this meta-study: (1) confirm previous findings that the number of GCs normalized by host galaxy stellar mass increases with host stellar mass. Spiral galaxies in the sample show smaller relative GC numbers than those of massive ellipticals, suggesting the GC systems of massive ellipticals were not formed from major spiral-spiral mergers; (2) indicate that GC system numbers per unit galaxy baryon mass increases with host baryon mass and that GC formation efficiency may not be universal as previously thought; (3) suggest previously reported trends with environment may be incorrect due to sample bias or the use of galaxy stellar masses to normalize GC numbers. Thus claims for environmentally dependent GC formation efficiencies should be revisited; (4) in combination with weak-lensing halo mass estimates, suggest that GCs formed in direct proportion to the halo mass; (5) are consistent with theoretical predictions whereby the local epoch of re-ionization did not vary significantly with environment or host galaxy type. more...
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- 2008
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21. SpitzerSurvey of the Large Magellanic Cloud: Surveying the Agents of a Galaxy?s Evolution (SAGE). I. Overview and Initial Results
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M. S. Oey, Karl D. Gordon, Robert Blum, Remy Indebetouw, Francois Boulanger, Martin Cohen, Norikazu Mizuno, Nino Panagia, Pablo G. Pérez-González, Sato Shuji, Alexander G. G. M. Tielens, Toshikazu Onishi, Karl Misselt, Jeremy Mould, Claus Leitherer, Toshiya Ueta, Akiko Kawamura, Jay Gallagher, Schuyler D. Van Dyk, Michael W. Werner, Lister Staveley-Smith, Brian Babler, Suzanne C. Madden, Ed Churchwell, Margaret Meixner, Linda J. Smith, William B. Latter, Yasuo Fukui, Uma P. Vijh, Bi-Qing For, Varoujan Gorjian, William T. Reach, Kevin Volk, Hiroshi Shibai, Dennis Zaritsky, Joseph L. Hora, Ciska Markwick-Kemper, Jason Harris, Soyoung Kim, Barbara A. Whitney, Knut Olsen, Marilyn R. Meade, Charles W. Engelbracht, Akira Mizuno, Jean-Philippe Bernard, Jay A. Frogel, Roberta Paladini, Antonella Nota, and Douglas M. Kelly more...
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Physics ,Solar mass ,Point source ,Star formation ,Astrophysics (astro-ph) ,FOS: Physical sciences ,Astronomy and Astrophysics ,Astrophysics ,Galaxy ,Interstellar medium ,Stars ,Spitzer Space Telescope ,Space and Planetary Science ,Large Magellanic Cloud - Abstract
著者人数:49名, Accepted: 2006-06-09, 資料番号: SA1000635000
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- 2006
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22. Atmospheric and astrophysical neutrinos above 1 TeV interacting in IceCube
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K. Hoshina, Glenn Spiczak, Markus Ahlers, Albrecht Karle, U. Naumann, Mohamed Rameez, E. Unger, A. Schönwald, Gerald Przybylski, M. Zoll, D. Altmann, K. Meagher, Samvel Ter-Antonyan, M. Relich, L. Schulte, Christian Bohm, Aongus O'Murchadha, Benedikt Riedel, K. Rawlins, Christian Spiering, B. J. Whelan, G. C. Hill, M. Quinnan, J. C. Díaz-Vélez, A. Stasik, J. van Santen, James Madsen, Segev BenZvi, K. Clark, Gary Binder, Axel Groß, K. Frantzen, L. Gladstone, D. Heereman, Joakim Sandroos, Azadeh Keivani, F. Clevermann, Y. Sestayo, Justin Vandenbroucke, J. P. Yanez, Dirk Heinen, E. A. Strahler, D. Seckel, S. Miarecki, A. R. Fazely, J. Blumenthal, M. Kowalski, Thomas Meures, M. N. Tobin, Tyce DeYoung, P. A. Toale, Tim Ruhe, M. Danninger, L. Mohrmann, O. Schulz, D. Berley, R. Nahnhauer, P. B. Price, A. Koob, Timo Karg, E. Jacobi, Spencer Klein, Hermann Kolanoski, J. Pütz, Matthias Vraeghe, P. O. Hulth, J. Eisch, Olga Botner, Teresa Montaruli, A. Christov, Björn Eichmann, A. Franckowiak, J. Miller, T. O. B. Schmidt, N. L. Strotjohann, D. Z. Besson, A. Kriesten, V. Baum, Aya Ishihara, T. Feusels, J. P. A. M. de André, C. Walck, H.-P. Bretz, Juanan Aguilar, J.-H. Köhne, H. Wissing, T. R. Wood, Kara Hoffman, A. H. Cruz Silva, P. Gretskov, B. Christy, Kurt Woschnagg, K. Krings, Chris Wendt, Frank McNally, Carl Pfendner, J. E. Jacobsen, Marcos Santander, H. S. Matis, Daniel Bindig, J. Felde, Xinhua Bai, Paul Evenson, J. P. Rodrigues, T. C. Arlen, T. Stezelberger, S. M. Saba, M. Casier, J. Auffenberg, A. Obertacke, K. Mase, A. Homeier, Nathan Whitehorn, Ch. Weaver, Christopher Wiebusch, J. Daughhetee, Wolfgang Rhode, A. Meli, J. L. Kelley, M. Leuermann, F. Bos, N. Buzinsky, A. Terliuk, S. Westerhoff, Dmitry Chirkin, M. Jurkovic, M. Kauer, Allan Hallgren, Delia Tosi, R. Hellauer, S. Seunarine, Chad Finley, Sandro Kopper, R. C. Bay, L. Gerhardt, C. Haack, Carlos Arguelles, E. Pinat, D. Hellwig, Mike Richman, Alexander Kappes, K. Schatto, G. Kohnen, S. Zierke, Sally Robertson, Dennis Soldin, Rezo Shanidze, J. J. Beatty, Donglian Xu, A. Omairat, M. G. Aartsen, H. Taavola, Anatoli Fedynitch, S. Hussain, D. J. Koskinen, Maria Tselengidou, Ö. Penek, Francis Halzen, S. Schöneberg, P. Zarzhitsky, L. Rädel, E. Blaufuss, P. Hallen, N. A. Stanisha, M. Kroll, M. Schmitz, K. Jero, Darren Grant, D. J. Boersma, J. C. Davis, K. Jagielski, J. Casey, Jay Gallagher, René Reimann, R. Morse, K. D. de Vries, M. J. Larson, Matthias Wolf, Sarah Nowicki, O. Fadiran, B. Ruzybayev, T. Anderson, J. Posselt, Subir Sarkar, M. Lesiak-Bzdak, P. Redl, G. Tešić, G. W. Sullivan, A. Stößl, Sofia Vallecorsa, A. Tamburro, A. Olivas, Reina H. Maruyama, R. Ström, M. Vehring, D. F. Cowen, Klas Hultqvist, J. Kiryluk, Kirill Filimonov, R. Maunu, T. Kuwabara, S. De Ridder, C. Ha, P. Berghaus, J. Kläs, D. Gier, M. Labare, F. Huang, J. Kunnen, H. G. Sander, D. Bose, Damian Pieloth, Ali Kheirandish, A. M. Brown, Maryon Ahrens, T. Fuchs, T. Palczewski, M. Medici, S. Coenders, L. Köpke, J. C. Groh, C. Wichary, C. Kopper, B. Eberhardt, O. Jlelati, S. Tilav, Ignacio Taboada, M. Stamatikos, A. Goldschmidt, K.-H. Becker, Matt Dunkman, T. Fischer-Wasels, A. Schukraft, E. Cheung, Dirk Ryckbosch, N. Milke, George Japaridze, S. Euler, Jenni Adams, Kael Hanson, R. Gaior, Steven W. Barwick, N. Kurahashi, Todor Stanev, Dawn Williams, Paolo Desiati, N. van Eijndhoven, Elisa Resconi, E. Middlemas, G. Kroll, D. T. Larsen, S. Yoshida, S. Hickford, R. Hoffmann, R. Eagan, R. G. Stokstad, Thomas K. Gaisser, G. B. Yodh, Javier Gonzalez, Giorgio Maggi, C. De Clercq, S. Böser, I. Rees, J. Feintzeig, Markus Ackermann, J. Lünemann, J. A. Goodman, G. Golup, M. Wellons, Dariusz Gora, Joshua Pepper, J. Becker Tjus, E. Middell, Elisa Bernardini, B. Kaminsky, C. Pérez de los Heros, K. Wiebe, L. Classen, M. W. E. Smith, S. Schoenen, Thorsten Glusenkamp, L. Brayeur, Dustin Hebecker, S. Flis, W. Huelsnitz, Carsten Rott, Dave Nygren, M. Bissok, Xianwu Xu, K. Helbing, J. Ziemann, M. Day, A. Haj Ismail, M. Usner, Martin Rongen, Hans Niederhausen, S. Odrowski, M. Wallraff, M. Voge, A. Bernhard, A. Tepe, J. Leute, Larissa Paul, F. Scheriau, Physics, and Elementary Particle Physics more...
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HIGH-ENERGY NEUTRINOS ,Nuclear and High Energy Physics ,Particle physics ,AMANDA ,Meson ,Solar neutrino ,Astrophysics::High Energy Astrophysical Phenomena ,INDUCED CASCADES ,FOS: Physical sciences ,Cosmic ray ,Astrophysics ,FLUX PREDICTIONS ,01 natural sciences ,IceCube Neutrino Observatory ,IceCube ,Observatory ,SEARCH ,0103 physical sciences ,ddc:530 ,Blazar ,010303 astronomy & astrophysics ,High Energy Astrophysical Phenomena (astro-ph.HE) ,Physics ,010308 nuclear & particles physics ,High Energy Physics::Phenomenology ,Astrophysics::Instrumentation and Methods for Astrophysics ,ASTRONOMY ,PERFORMANCE ,BLAZARS ,PROMPT LEPTONS ,GAMMA-RAY ,Physics and Astronomy ,High Energy Physics::Experiment ,Neutrino astronomy ,Neutrino ,Astrophysics - High Energy Astrophysical Phenomena ,physics - Abstract
The IceCube Neutrino Observatory was designed primarily to search for high-energy (TeV--PeV) neutrinos produced in distant astrophysical objects. A search for $\gtrsim 100$~TeV neutrinos interacting inside the instrumented volume has recently provided evidence for an isotropic flux of such neutrinos. At lower energies, IceCube collects large numbers of neutrinos from the weak decays of mesons in cosmic-ray air showers. Here we present the results of a search for neutrino interactions inside IceCube's instrumented volume between 1~TeV and 1~PeV in 641 days of data taken from 2010--2012, lowering the energy threshold for neutrinos from the southern sky below 10 TeV for the first time, far below the threshold of the previous high-energy analysis. Astrophysical neutrinos remain the dominant component in the southern sky down to 10 TeV. From these data we derive new constraints on the diffuse astrophysical neutrino spectrum, $\Phi_{\nu} = 2.06^{+0.4}_{-0.3} \times 10^{-18} \left({E_{\nu}}/{10^5 \,\, \rm{GeV}} \right)^{-2.46 \pm 0.12} {\rm {GeV^{-1} \, cm^{-2} \, sr^{-1} \, s^{-1}} } $, as well as the strongest upper limit yet on the flux of neutrinos from charmed-meson decay in the atmosphere, 1.52 times the benchmark theoretical prediction used in previous IceCube results at 90\% confidence., Comment: 18 pages, 12 figures more...
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- 2015
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23. Do Muscles Matter?--Women and Physical Strength: A Reply to Xinyan Jiang
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Jay Gallagher
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Cultural revolution ,05 social sciences ,Gender studies ,Contrast (music) ,Physical strength ,0506 political science ,Epistemology ,Gender Studies ,Philosophy ,050903 gender studies ,050602 political science & public administration ,Sociology ,0509 other social sciences ,Counterexample - Abstract
In Hypatia's (1.5) 3, issue, Xinyan Jiang describes a failed experiment in sexual equality conducted during the Chinese Cultural Revolution. She believes the lesson to be drawn from it is that males will continue to have an advantage in societies requiring much physical strength. In contrast, I argue here that this failed experiment shows that the Maoist attempt to force women into men's roles was not feminist. American pioneers are cited as a counterexample. more...
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- 2002
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24. The dust distribution in late-type low surface brightness disks
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Kenny Wood, Jay Gallagher, J. M. MacLachlan, and Lynn D. Matthews
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Luminous infrared galaxy ,Physics ,Surface brightness fluctuation ,Astronomy ,Astronomy and Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,Galaxy ,Space and Planetary Science ,Bulge ,Elliptical galaxy ,Astrophysics::Solar and Stellar Astrophysics ,Astrophysics::Earth and Planetary Astrophysics ,Surface brightness ,Disc ,Lenticular galaxy ,Astrophysics::Galaxy Astrophysics - Abstract
Late-type low surface brightness (LSB) disk galaxies are common in the local universe and appear dynamically and chemically under evolved compared to their high surface brightness (HSB) counterparts. We have utilized multi-wavelength imaging and photometry of three edge-on, low-mass LSB disk galaxies to investigate the dust distribution in such systems. Through the use of Monte Carlo radiation transfer models to interpret the data, we find that the dust disk appears to have a vertical scale height similar to the stellar disk. This is in contrast to previous findings from HSB galaxies, where the dust is believed to be more concentrated in the galactic mid-plane. We believe the change in the relative scale heights of the dust and stellar disks is likely associated with the increased stability of the ISM against vertical collapse and the thin nature of the stellar disks. more...
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- 2011
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25. The Extreme Outer Regions of Disk Galaxies: Star Formation and Metal Abundances
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Annette M. N. Ferguson, Jay Gallagher, and Rosemary F. G. Wyse
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Physics ,Spiral galaxy ,Star formation ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,Radius ,Galaxy ,Chemical evolution ,Metal ,visual_art ,Large study ,visual_art.visual_art_medium ,Astrophysics::Earth and Planetary Astrophysics ,Astrophysics::Galaxy Astrophysics - Abstract
The extreme outer regions of disk galaxies, lying at or beyond the classical optical radius defined by R25, present an opportunity to study star formation and chemical evolution under unique physical conditions, possibly reminscent of those which existed during the early stages of disk evolution. We present here some of the first results from a large study to measure star formation rates and metallicities in the extreme outer limits of a sample of nearby spiral galaxies. Despite their low gas column densities, massive star formation is often observed in these outer parts, but at an azimuthally–averaged rate much lower than that seen in the inner disk. Gas-phase O/H abundances of roughly 10% solar characterize the gas at 1.5–2 R25. The implications of our results for star formation ‘laws’ and models of disk evolution are discussed. more...
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- 1999
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26. Discovery of Recent Star Formation in the Extreme Outer Regions of Disk Galaxies
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Deidre A. Hunter, Jay Gallagher, Rosemary F. G. Wyse, and Annette M. N. Ferguson
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Physics ,Spiral galaxy ,Star formation ,Astrophysics (astro-ph) ,FOS: Physical sciences ,Velocity dispersion ,Astronomy and Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,Instability ,Galaxy ,Stars ,Space and Planetary Science ,Instability theory ,Astrophysics::Solar and Stellar Astrophysics ,Astrophysics::Earth and Planetary Astrophysics ,Surface brightness ,Astrophysics::Galaxy Astrophysics - Abstract
We present deep Halpha images of three nearby late-type spiral galaxies (NGC628, NGC1058 and NGC6946), which reveal the presence of HII regions out to, and beyond, two optical radii (defined by the 25th B-band isophote). The outermost HII regions appear small, faint and isolated, compared to their inner disk counterparts, and are distributed in organized spiral arm structures, likely associated with underlying HI arms and faint stellar arms. The relationship between the azimuthally--averaged Halpha surface brightness (proportional to star formation rate per unit area) and the total gas surface density is observed to steepen considerably at low gas surface densities. We find that this effect is largely driven by a sharp decrease in the covering factor of star formation at large radii, and not by changes in the rate at which stars form locally. An azimuthally--averaged analysis of the gravitational stability of the disk of NGC6946 reveals that while the existence of star formation in the extreme outer disk is consistent with the Toomre-Q instability model, the low rates observed are only compatible with the model when a constant gaseous velocity dispersion is assumed. We suggest that observed behaviour could also be explained by a model in which the star formation rate has an intrinsic dependence on the azimuthally-averaged gas volume density, which decreases rapidly in the outer disk due to the vertical flaring of the gas layer., Comment: 10 pages, 2 embedded postscript files, 3 jpeg images; accepted for publication in ApJ Letters more...
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- 1998
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27. The Extreme Outer Regions of Disk Galaxies. I. Chemical Abundances of H [CSC]ii[/CSC] Regions
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Jay Gallagher, Annette M. N. Ferguson, and Rosemary F. G. Wyse
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Physics ,Spiral galaxy ,Extinction ,Star formation ,Astronomy and Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,Redshift ,Spectral line ,Galaxy ,Space and Planetary Science ,Abundance (ecology) ,Astrophysics::Earth and Planetary Astrophysics ,Emission spectrum ,Astrophysics::Galaxy Astrophysics - Abstract
We present the first results of an ongoing project to investigate the present-day chemical abundances of the extreme outer parts of galactic disks, as probed by the emission line spectra of a new sample of HII regions. The galaxies studied here, NGC628, NGC1058 and NGC6946, are all late-type spiral galaxies, characterized by larger than average HI-to-optical sizes. Our deep Halpha images have revealed the existence of recent massive star formation, traced by HII regions, out to, and beyond, two optical radii in these galaxies (defined by the B-band 25th magnitude isophote). Optical spectra of these newly-discovered HII regions are used to investigate their densities, ionization parameters, extinctions and in particular their oxygen and nitrogen abundances. Our measurements reveal gas-phase abundances of O/H~10-15% of the solar value, and N/O~20-25% of the solar value, at radii of 1.5-2 R25. Clear evidence also exists for diminished dust extinction (Av~0-0.2) at large radii. The combination of our measurements of outer disk HII region abundances with those for inner disk HII regions published in the literature is a powerful probe of the shape of abundance gradients over unprecedented radial baselines. Within the limits of the current dataset, the radial abundance variations are consistent with single log-linear relationships, although the derived slopes can often differ considerably from those found if only inner disk HII regions are used to define the fit. Interestingly, both the mean level of enrichment and the ratio of N/O measured in extreme outer galactic disks are similar to those values measured in some high redshift damped Lyman-alpha absorbers, suggesting that outer disks at the present epoch are relatively unevolved. (abridged) more...
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- 1998
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28. Asteroid Trails in Hubble Space TelescopeWFPC2 Images: First Results
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Jon Holtzmann, J. Jeff Hester, Raghvendra Sahai, John T. Trauger, Karl R. Stapelfeldt, Christopher J. Burrows, Gilda E. Ballester, David Crisp, Richard E. Griffiths, Vikki Meadows, Robin W. Evans, John Clarke, Jay Gallagher, Carl J. Grillmair, Jeremy Mould, Matthew McMaster, John Krist, John G. Hoessel, James A. Westphal, Paul A. Scowen, Daniel P. Peters, Eric J. Ostrander, Deborah L. Padgett, and Alan M. Watson more...
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Absolute magnitude ,Physics ,education.field_of_study ,Population ,Ecliptic ,Astronomy ,Astronomy and Astrophysics ,Astrophysics ,Ephemeris ,Photometry (astronomy) ,Space and Planetary Science ,Asteroid ,Parallax ,education ,Minor planet - Abstract
Careful examination of 28,460 selected Wide Field and Planetary Camera 2 (WFPC2) long exposures from 1994, 1995, and early 1996 has revealed trails of 96 distinct moving objects. They have been reported to the International Astronomical Union's (IAU) Minor Planet Center for their asteroid database and a few have been identified with known asteroids and used to update their orbits. Most of the objects are new, as they are too faint to show up on ground-based surveys. The trails often show a characteristic curvature due to the parallax induced by HST's orbital motion during the exposures. Using ephemerides for HST, the distance to each object can be directly determined from the parallax contribution to the trail shapes. Based on these distances, constraints on the orbits, and photometry of the trails (16 more...
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- 1998
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29. Star Formation in Disk Galaxies
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Deidre A. Hunter, Jay Gallagher, Annette M. N. Ferguson, and Rosemary F. G. Wyse
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Physics ,Debris disk ,Intergalactic star ,Star formation ,Astronomy ,Astronomy and Astrophysics ,Astrophysics ,Galaxy merger ,01 natural sciences ,Space and Planetary Science ,0103 physical sciences ,Binary star ,Elliptical galaxy ,Thick disk ,010303 astronomy & astrophysics ,Lenticular galaxy - Abstract
We present results, some preliminary, from a major new study of the star formation properties of a sample of nearby disk galaxies (Ferguson 1997). Our emphasis is on the faint outer regions of disks. Hα images, combined with broad-band images and spectroscopy of HII regions, constrain the present and past star formation rates and chemical enrichment. These data also allow study of faint diffuse ionised gas, which traces the influence of massive stars on their environment, and the structure of the interstellar medium. more...
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- 1998
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30. Measurement of the Atmospheric ve flux in IceCube
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F. McNally, Christian Bohm, G. C. Hill, Gerald Przybylski, A. Zilles, M. Zoll, L. Mohrmann, L. Gladstone, D. Bindig, D. Seckel, S. Miarecki, M. Voge, R. Hellauer, S. Seunarine, A. R. Fazely, Tyce DeYoung, P. A. Toale, P. Berghaus, J. Kläs, Ignacio Taboada, S. Flis, J. Dreyer, S. Euler, A. Tamburro, J. P. Rodrigues, Y. Abdou, T. Stezelberger, J. Kunnen, S. M. Saba, C. Walck, Damian Pieloth, J. Leute, S. Odrowski, J. van Santen, L. Köpke, J. Feintzeig, A. M. Brown, K. Schatto, D. Altmann, G. Kohnen, B. Ruzybayev, J. Auffenberg, F. Scheriau, Klas Hultqvist, A. Obertacke, J. Kiryluk, K. Rawlins, A. O'Murchadha, Axel Groß, A. Fedynitch, T. Fuchs, C. Finley, K. Mase, James Madsen, Aya Ishihara, P. Meszaros, Stijn Buitink, Segev BenZvi, M. Vraeghe, M. Merck, O. Fadiran, T. Schmidt, S. Böser, J. Blumenthal, Spencer Klein, M. Krasberg, J. J. Beatty, O. Schulz, F. Clevermann, C. Sheremata, S. Bohaichuk, Y. Sestayo, K. Beattie, Teresa Montaruli, S. Westerhoff, J. Eisch, V. Baum, H. Taavola, Olga Botner, G. de Vries-Uiterweerd, Albrecht Karle, D. Soldin, H. Landsman, H. S. Matis, Kara Hoffman, S. Hussain, J. P. Yanez, E. Blaufuss, S. Panknin, K. Clark, J. C. Davis, T. R. Wood, D. J. Koskinen, A. H. Cruz Silva, M. Wellons, J. Posselt, A. Schönwald, A. Homeier, Kurt Woschnagg, Paul Evenson, R. W. Ellsworth, Christian Spiering, Francis Halzen, J.-H. Köhne, H. Wissing, S. Yoshida, A. Stößl, A. Van Overloop, S. Schoenen, Dariusz Gora, G. W. Sullivan, K. Meagher, M. Dunkman, R. Ström, M. Wolf, S. C. Nowicki, C. Pfendner, P. Zarzhitsky, Reina H. Maruyama, L. Schulte, W. Huelsnitz, S. De Ridder, Wolfgang Rhode, D. J. Boersma, Christopher Wiebusch, L. Schönherr, E. Jacobi, D. Ryckbosch, Allan Hallgren, R. Morse, Dmitry Chirkin, K. Helbing, M. Labare, C. Kopper, G. Golup, Kael Hanson, Jürgen Brunner, D. Bose, Alexander Kappes, J. Daughhetee, K. Frantzen, T. Salameh, M. L. Benabderrahmane, S. Schöneberg, M. Casier, D. Berley, S. H. Seo, N. Milke, Steven W. Barwick, George Japaridze, C. De Clercq, R. Nahnhauer, S. Bechet, Donglian Xu, P. B. Price, J. Lünemann, O. Engdegård, J. Miller, Paolo Desiati, R. C. Bay, Juanan Aguilar, M. G. Aartsen, M. Lesiak-Bzdak, P. Redl, J. Becker Tjus, M. Olivo, T. Feusels, N. van Eijndhoven, R. Bruijn, Subir Sarkar, B. Christy, Markus Ackermann, S. Zierke, T. Karg, J. E. Jacobsen, L. Paul, B. Riedel, J. A. Pepper, A. Schukraft, Marcos Santander, M. J. Carson, P. Heimann, A. Stasik, T. Kuwabara, D. Heereman, L. Gerhardt, G. Kroll, B. Eberhardt, Elisa Resconi, Michael S. Bell, Kirill Filimonov, M. Vehring, D. F. Cowen, C. Ha, J. Berdermann, Todor Stanev, Jay Gallagher, Dawn Williams, M. J. Larson, M. W. E. Smith, D. Z. Besson, Darren Grant, M. Schmitz, K. Jero, Fabian Kislat, J. C. Díaz-Vélez, S. Kopper, R. Hoffmann, R. Franke, R. Eagan, Thomas K. Gaisser, G. B. Yodh, M. Baker, A. Olivas, D. van der Drift, T. Ruhe, S. Cohen, M. Kowalski, T. Meures, R. Wasserman, H. G. Sander, B. Kaminsky, N. Whitehorn, Chris Wendt, L. Brayeur, A. Franckowiak, E. A. Strahler, Mike Richman, M. Soiron, E. Middell, Elisa Bernardini, Hermann Kolanoski, M. Ribordy, Rasha Abbasi, Ch. Weaver, J. Casey, Chun Xu, K. Hoshina, Jenni Adams, D. Heinen, Glenn Spiczak, U. Naumann, K. H. Becker, S. Hickford, R. G. Stokstad, T. Glüsenkamp, Carsten Rott, A. Goldschmidt, Dave Nygren, Michael Stamatikos, M. Bissok, P. O. Hulth, J. A. Goodman, T. Fischer-Wasels, Xianwu Xu, S. Toscano, J. Ziemann, C. Pérez de los Heros, N. Pirk, O. Jlelati, M. Scheel, S. Tilav, L. Rädel, K. Wiebe, A. Bernhard, J. L. Kelley, M. Wallraff, A. Haj Ismail, Markus Ahlers, M. Usner, Hans Niederhausen, Samvel Ter-Antonyan, D. Bertrand, T. Waldenmaier, M. Gurtner, M. Danninger, Xinhua Bai, N. Kurahashi, Aguilar Sanchez, Juan, and Montaruli, Teresa more...
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DEEPCORE ,Particle physics ,AMANDA ,Physics::Instrumentation and Detectors ,Solar neutrino ,Astrophysics::High Energy Astrophysical Phenomena ,General Physics and Astronomy ,ddc:500.2 ,01 natural sciences ,7. Clean energy ,High Energy Physics - Experiment ,Nuclear physics ,SEARCH ,0103 physical sciences ,ddc:550 ,010306 general physics ,Neutrino oscillation ,DETECTOR ,Physics ,010308 nuclear & particles physics ,High Energy Physics::Phenomenology ,Solar neutrino problem ,Cosmic neutrino background ,Neutrino detector ,Physics and Astronomy ,13. Climate action ,Measurements of neutrino speed ,High Energy Physics::Experiment ,Neutrino astronomy ,Neutrino ,NEUTRINO-INDUCED CASCADES ,Astrophysics - High Energy Astrophysical Phenomena - Abstract
We report the first measurement of the atmospheric electron neutrino flux in the energy range between approximately 80 GeV and 6 TeV, using data recorded during the first year of operation of IceCube's DeepCore low energy extension. Techniques to identify neutrinos interacting within the DeepCore volume and veto muons originating outside the detector are demonstrated. A sample of 1029 events is observed in 281 days of data, of which 496 $\pm$ 66(stat.) $\pm$ 88(syst.) are estimated to be cascade events, including both electron neutrino and neutral current events. The rest of the sample includes residual backgrounds due to atmospheric muons and charged current interactions of atmospheric muon neutrinos. The flux of the atmospheric electron neutrinos is consistent with models of atmospheric neutrinos in this energy range. This constitutes the first observation of electron neutrinos and neutral current interactions in a very large volume neutrino telescope optimized for the TeV energy range., Comment: 7 pages, 4 figures (accepted by PRL) more...
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- 2013
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31. Search for Dark Matter Annihilations in the Sun with the 79-String IceCube Detector
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A. O'Murchadha, O. Engdegård, S. Hussain, D. J. Koskinen, Chris Wendt, Elisa Resconi, J. Berdermann, S. Schöneberg, Ignacio Taboada, A. Haj Ismail, J. Blumenthal, M. Wellons, Dariusz Gora, A. Goldschmidt, Peter Mészáros, M. Usner, Olga Botner, R. Bruijn, S. C. Nowicki, Allan Hallgren, C. Finley, K. Frantzen, B. Riedel, S. Schoenen, J. J. Beatty, L. Köpke, J. Auffenberg, A. Obertacke, Hans Niederhausen, M. Merck, A. Bernhard, M. Schmitz, K. Jero, W. Huelsnitz, S. Cohen, N. Kurahashi, K. Mase, Ch. Weaver, S. Bechet, K. Hoshina, J. A. Pepper, D. Heereman, A. Schukraft, O. Fadiran, Gerald Przybylski, H. S. Matis, A. Zilles, J. Posselt, M. Zoll, K. Rawlins, S. Böser, D. Bindig, M. W. E. Smith, K. Helbing, Mike Richman, M. Lesiak-Bzdak, P. Redl, E. A. Strahler, K. Schatto, G. Kohnen, A. Stößl, O. Jlelati, M. Scheel, S. Tilav, M. Krasberg, Glenn Spiczak, U. Naumann, K. H. Becker, Reina H. Maruyama, James Madsen, M. L. Benabderrahmane, M. Kowalski, T. Meures, Rasha Abbasi, R. W. Ellsworth, R. Nahnhauer, J. Miller, M. Vraeghe, Donglian Xu, P. B. Price, Hermann Kolanoski, L. Rädel, T. Ruhe, N. Whitehorn, C. De Clercq, O. Schulz, T. Waldenmaier, Juanan Aguilar, L. Brayeur, M. Soiron, D. Bertrand, J. Casey, Teresa Montaruli, B. Ruzybayev, M. Olivo, S. Yoshida, L. Schönherr, E. Jacobi, R. Ström, M. Wolf, Francis Halzen, P. Zarzhitsky, J. Becker Tjus, C. Pfendner, Christian Spiering, E. Middell, Elisa Bernardini, M. Ribordy, D. Z. Besson, Michael S. Bell, Kirill Filimonov, Markus Ackermann, B. Christy, M. Danninger, L. Paul, A. Tamburro, J. van Santen, A. Van Overloop, M. Casier, L. Schulte, L. Mohrmann, J. Eisch, V. Baum, J. Feintzeig, F. McNally, Christian Bohm, T. Schmidt, C. Pérez de los Heros, N. Pirk, T. Fischer-Wasels, Kael Hanson, Segev BenZvi, Spencer Klein, S. Seunarine, M. J. Carson, Fabian Kislat, J. C. Díaz-Vélez, S. Kopper, M. Baker, J. Lünemann, G. de Vries-Uiterweerd, H. G. Sander, Todor Stanev, Dawn Williams, M. Gurtner, Jenni Adams, K. Beattie, R. C. Bay, Steven W. Barwick, A. Franckowiak, G. C. Hill, Axel Groß, R. Hoffmann, L. Gladstone, F. Clevermann, R. Franke, D. Seckel, S. Miarecki, M. Voge, R. Eagan, H. Taavola, Kara Hoffman, A. H. Cruz Silva, J.-H. Köhne, H. Wissing, A. R. Fazely, Tyce DeYoung, P. A. Toale, T. Feusels, Paolo Desiati, S. Bohaichuk, Y. Sestayo, M. Dunkman, S. Hickford, D. Soldin, C. Kopper, G. Golup, Thomas K. Gaisser, G. B. Yodh, R. G. Stokstad, B. Eberhardt, Xinhua Bai, K. Wiebe, J. P. Yanez, N. van Eijndhoven, R. Morse, Wolfgang Rhode, J. E. Jacobsen, Marcos Santander, J. L. Kelley, E. Blaufuss, J. C. Davis, K. Clark, P. Berghaus, A. Homeier, T. Glüsenkamp, J. Kläs, M. Wallraff, Carsten Rott, Dave Nygren, Jürgen Brunner, P. Heimann, S. Euler, L. Gerhardt, Markus Ahlers, M. Bissok, D. Berley, M. G. Aartsen, J. Kunnen, Christopher Wiebusch, J. Daughhetee, B. Kaminsky, G. Kroll, J. Leute, S. Odrowski, F. Scheriau, Michael Stamatikos, Damian Pieloth, P. O. Hulth, Xianwu Xu, S. Toscano, A. M. Brown, J. A. Goodman, T. Fuchs, J. Ziemann, Albrecht Karle, Samvel Ter-Antonyan, A. Stasik, A. Schönwald, D. Ryckbosch, S. Zierke, G. W. Sullivan, K. Meagher, D. Heinen, S. H. Seo, Aya Ishihara, Darren Grant, Chun Xu, T. Salameh, S. De Ridder, C. Walck, D. Altmann, M. Labare, M. Vehring, D. F. Cowen, C. Ha, Stijn Buitink, C. Sheremata, S. Westerhoff, T. R. Wood, Kurt Woschnagg, Paul Evenson, Dmitry Chirkin, D. Bose, Alexander Kappes, T. Karg, T. Kuwabara, Klas Hultqvist, J. Kiryluk, A. Fedynitch, J. P. Rodrigues, T. Stezelberger, S. M. Saba, R. Hellauer, S. Flis, J. Dreyer, Y. Abdou, Jay Gallagher, M. J. Larson, A. Olivas, D. van der Drift, R. Wasserman, H. Landsman, D. J. Boersma, Subir Sarkar, N. Milke, George Japaridze, Aguilar Sanchez, Juan, Montaruli, Teresa, Physics, Elementary Particle Physics, and Astronomy and Astrophysics Research Group more...
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Particle physics ,Physics::Instrumentation and Detectors ,Astrophysics::High Energy Astrophysical Phenomena ,Dark matter ,FOS: Physical sciences ,General Physics and Astronomy ,Cosmic ray ,ddc:500.2 ,MASSIVE PARTICLES ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,7. Clean energy ,01 natural sciences ,IceCube ,High Energy Physics - Experiment ,High Energy Physics - Experiment (hep-ex) ,LIMITS ,WIMP ,0103 physical sciences ,ddc:550 ,010306 general physics ,Light dark matter ,CANDIDATES ,High Energy Astrophysical Phenomena (astro-ph.HE) ,Physics ,010308 nuclear & particles physics ,Astrophysics::Instrumentation and Methods for Astrophysics ,CONSTRAINTS ,CAPTURE ,NEUTRINOS ,Physics and Astronomy ,Neutrino detector ,13. Climate action ,Weakly interacting massive particles ,High Energy Physics::Experiment ,Cryogenic Dark Matter Search ,Neutrino ,Astrophysics - High Energy Astrophysical Phenomena - Abstract
We have performed a search for muon neutrinos from dark matter annihilation in the center of the Sun with the 79-string configuration of the IceCube neutrino telescope. For the first time, the DeepCore sub-array is included in the analysis, lowering the energy threshold and extending the search to the austral summer. The 317 days of data collected between June 2010 and May 2011 are consistent with the expected background from atmospheric muons and neutrinos. Upper limits are therefore set on the dark matter annihilation rate, with conversions to limits on spin-dependent and spin-independent WIMP-proton cross-sections for WIMP masses in the range 20 - 5000 GeV. These are the most stringent spin-dependent WIMP-proton cross-sections limits to date above 35 GeV., 7 pages, 3 figues more...
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- 2013
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32. Measurement of South Pole ice transparency with the IceCube LED calibration system
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M. Labare, R. Bruijn, J. A. Pepper, D. Heereman, Ch. Weaver, F. McNally, K. Hoshina, Christian Bohm, Glenn Spiczak, Segev BenZvi, Spencer Klein, B. Riedel, D. Z. Besson, Kara Hoffman, N. van Eijndhoven, U. Naumann, G. C. Hill, M. W. E. Smith, A. H. Cruz Silva, Klas Hultqvist, J. Kiryluk, K. H. Becker, Chun Xu, A. Fedynitch, J. Leute, S. Odrowski, F. Scheriau, T. Ruhe, A. O'Murchadha, N. Whitehorn, L. Brayeur, M. Wellons, L. Gladstone, H. G. Sander, Wolfgang Rhode, M. Soiron, D. Seckel, Dariusz Gora, S. Miarecki, T. Salameh, G. Kroll, L. Köpke, M. Voge, S. Hussain, K. Frantzen, A. R. Fazely, Tyce DeYoung, D. J. Koskinen, K. Rawlins, P. A. Toale, S. Bechet, R. Hellauer, L. Schönherr, E. Jacobi, J. Eisch, V. Baum, C. De Clercq, J. Auffenberg, T. Feusels, Albrecht Karle, J. E. Jacobsen, E. A. Strahler, M. Dunkman, A. Schukraft, A. Obertacke, M. Lesiak-Bzdak, P. Redl, S. Flis, M. Casier, T. R. Wood, R. Morse, C. Pfendner, A. Goldschmidt, K. Mase, T. Glüsenkamp, Paul Evenson, M. Olivo, K. Schatto, Marcos Santander, P. Heimann, Carsten Rott, Dave Nygren, L. Gerhardt, A. Bernhard, A. Schönwald, S. Schöneberg, Y. Abdou, J. Lünemann, Markus Ackermann, L. Paul, M. Bissok, O. Fadiran, Dmitry Chirkin, Kael Hanson, G. Kohnen, D. Heinen, Hermann Kolanoski, E. Middell, Elisa Bernardini, K. Meagher, S. Cohen, Michael S. Bell, S. Böser, Kirill Filimonov, R. C. Bay, D. Bose, Alexander Kappes, J.-H. Köhne, H. Wissing, M. Ribordy, Xianwu Xu, S. Toscano, James Madsen, Steven W. Barwick, T. Karg, M. L. Benabderrahmane, Jay Gallagher, M. J. Larson, M. J. Carson, Aya Ishihara, P. Berghaus, J. Kläs, R. Nahnhauer, J. P. Rodrigues, Jenni Adams, S. Euler, J. Ziemann, B. Eberhardt, T. Kuwabara, S. C. Nowicki, Allan Hallgren, T. Stezelberger, S. M. Saba, T. Fischer-Wasels, J. Kunnen, Fabian Kislat, Paolo Desiati, J. Blumenthal, S. Hickford, C. Pérez de los Heros, M. Vraeghe, A. Olivas, D. van der Drift, N. Pirk, Damian Pieloth, R. G. Stokstad, B. Ruzybayev, H. Taavola, A. M. Brown, O. Schulz, Teresa Montaruli, T. Schmidt, Ignacio Taboada, Chris Wendt, J. Miller, M. Vehring, D. F. Cowen, C. Ha, T. Fuchs, J. C. Díaz-Vélez, S. Kopper, M. Baker, D. Ryckbosch, M. Krasberg, Peter Mészáros, E. Blaufuss, J. C. Davis, C. Finley, A. Franckowiak, R. Wasserman, H. Landsman, Juanan Aguilar, J. Becker Tjus, Olga Botner, M. G. Aartsen, Michael Stamatikos, H. S. Matis, P. O. Hulth, K. Wiebe, D. J. Boersma, A. Van Overloop, G. W. Sullivan, J. J. Beatty, B. Christy, S. H. Seo, J. A. Goodman, S. Yoshida, R. Ström, M. Schmitz, K. Jero, N. Kurahashi, M. Wolf, B. Kaminsky, Francis Halzen, P. Zarzhitsky, L. Mohrmann, J. Posselt, Mike Richman, J. Feintzeig, S. Schoenen, A. Stößl, Reina H. Maruyama, S. Seunarine, L. Schulte, W. Huelsnitz, Rasha Abbasi, O. Jlelati, A. Haj Ismail, C. Kopper, G. Golup, M. Scheel, S. Tilav, A. Homeier, Gerald Przybylski, L. Rädel, A. Zilles, M. Zoll, J. Casey, D. Bindig, F. Clevermann, S. Bohaichuk, Y. Sestayo, K. Helbing, M. Usner, Jürgen Brunner, Christopher Wiebusch, J. Daughhetee, D. Soldin, Todor Stanev, Dawn Williams, J. P. Yanez, K. Clark, A. Stasik, M. Kowalski, T. Meures, N. Milke, A. Tamburro, George Japaridze, J. van Santen, R. Hoffmann, Gary Binder, Axel Groß, R. Franke, R. Eagan, Thomas K. Gaisser, G. B. Yodh, Elisa Resconi, J. Berdermann, Hans Niederhausen, D. Bertrand, M. Gurtner, Christian Spiering, Donglian Xu, P. B. Price, D. Berley, C. Walck, D. Altmann, Subir Sarkar, Stijn Buitink, C. Sheremata, S. Westerhoff, S. Zierke, Darren Grant, M. Merck, R. W. Ellsworth, J. L. Kelley, M. Wallraff, Markus Ahlers, Samvel Ter-Antonyan, T. Waldenmaier, M. Danninger, Xinhua Bai, S. De Ridder, Aguilar Sanchez, Juan, Montaruli, Teresa, Physics, and Elementary Particle Physics more...
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Nuclear and High Energy Physics ,Physics - Instrumentation and Detectors ,South Pole ice ,Photon progagation ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,Astrophysics ,ddc:500.2 ,01 natural sciences ,High Energy Physics - Experiment ,IceCube Neutrino Observatory ,IceCube ,Physics::Geophysics ,High Energy Physics - Experiment (hep-ex) ,0103 physical sciences ,Calibration ,ddc:530 ,14. Life underwater ,010306 general physics ,Absorption (electromagnetic radiation) ,Instrumentation ,Instrumentation and Methods for Astrophysics (astro-ph.IM) ,Cherenkov radiation ,Remote sensing ,Physics ,Optical properties ,010308 nuclear & particles physics ,Scattering ,Detector ,Astrophysics::Instrumentation and Methods for Astrophysics ,Photon propagation ,South Poleice ,Instrumentation and Detectors (physics.ins-det) ,Charged particle ,Data set ,Astrophysics - Instrumentation and Methods for Astrophysics - Abstract
The IceCube Neutrino Observatory, approximately 1 km^3 in size, is now complete with 86 strings deployed in the Antarctic ice. IceCube detects the Cherenkov radiation emitted by charged particles passing through or created in the ice. To realize the full potential of the detector, the properties of light propagation in the ice in and around the detector must be well understood. This report presents a new method of fitting the model of light propagation in the ice to a data set of in-situ light source events collected with IceCube. The resulting set of derived parameters, namely the measured values of scattering and absorption coefficients vs. depth, is presented and a comparison of IceCube data with simulations based on the new model is shown. The IceCube Neutrino Observatory, approximately 1km^3 in size, is now complete with 86 strings deployed in the Antarctic ice. IceCube detects the Cherenkov radiation emitted by charged particles passing through or created in the ice. To realize the full potential of the detector, the properties of light propagation in the ice in and around the detector must be well understood. This report presents a new method of fitting the model of light propagation in the ice to a data set of in situ light source events collected with IceCube. The resulting set of derived parameters, namely the measured values of scattering and absorption coefficients vs. depth, is presented and a comparison of IceCube data with simulations based on the new model is shown. more...
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- 2013
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33. First Observation of PeV-Energy Neutrinos with IceCube
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K. Hoshina, Glenn Spiczak, J. Becker Tjus, U. Naumann, Mohamed Rameez, R. Bruijn, K. H. Becker, Matthias Vraeghe, P. O. Hulth, J. Eisch, M. Wellons, Dariusz Gora, S. Zierke, P. Hallen, Darren Grant, Sarah Nowicki, Joshua Pepper, Christian Bohm, G. C. Hill, Michael J. Baker, L. Gladstone, Dirk Heinen, D. Seckel, S. Miarecki, Timo Karg, T. Feusels, J. E. Jacobsen, Marcos Santander, L. Gerhardt, B. Kaminsky, M. J. Carson, Fabian Kislat, Jay Gallagher, M. J. Larson, J. C. Díaz-Vélez, H.-P. Bretz, Chris Wendt, Frank McNally, C. Kopper, G. Golup, A. Franckowiak, Naoko Kurahashi, D. Bertrand, J.-H. Köhne, H. Wissing, J. Auffenberg, Daniel Bindig, D. Heereman, Jürgen Brunner, D. Z. Besson, J. Leute, S. Odrowski, Larissa Paul, F. Scheriau, Carsten Rott, Dave Nygren, M. Bissok, M. Leuermann, K. Krings, Allan Hallgren, Sandro Kopper, Nathan Whitehorn, P. Berghaus, J. Kläs, S. Euler, J. Kunnen, E. Middell, Elisa Bernardini, M. Ribordy, A. Olivas, D. van der Drift, M. Wallraff, M. Voge, M. Gurtner, A. Bernhard, Xianwu Xu, S. De Ridder, Damian Pieloth, A. M. Brown, K. Schatto, G. Kohnen, R. Wasserman, Benedikt Riedel, A. R. Fazely, Tyce DeYoung, A. Stasik, Albrecht Karle, J. Ziemann, P. A. Toale, N. Milke, George Japaridze, L. Köpke, K. Rawlins, Aya Ishihara, M. Richman, S. Bechet, M. Lesiak-Bzdak, P. Redl, G. Tešić, A. Schönwald, M. L. Benabderrahmane, R. Nahnhauer, M. W. E. Smith, M. Labare, Javier Gonzalez, E. A. Strahler, J. J. Beatty, M. Olivo, Ch. Weaver, J. Blumenthal, K. Meagher, Jenni Adams, C. De Clercq, James Madsen, L. Mohrmann, L. Brayeur, M. Soiron, Michael S. Bell, Kirill Filimonov, H. S. Matis, J. Miller, Christian Spiering, A. Homeier, S. Böser, Segev BenZvi, Olga Botner, Spencer Klein, R. Hellauer, S. Flis, Hermann Kolanoski, Chad Finley, Elisa Resconi, Juanan Aguilar, V. Baum, J. Berdermann, Matt Dunkman, Markus Ackermann, Kara Hoffman, M. G. Aartsen, A. H. Cruz Silva, S. Hickford, J. Posselt, C. Pérez de los Heros, N. Pirk, O. Schulz, T. Fischer-Wasels, Teresa Montaruli, Tim Ruhe, A. Van Overloop, Christopher Wiebusch, R. G. Stokstad, Takao Kuwabara, D. Berley, Rasha Abbasi, J. Daughhetee, H. Landsman, Wolfgang Rhode, Todor Stanev, J. L. Kelley, Dawn Williams, Anatoli Fedynitch, Dennis Soldin, J. Casey, H. Taavola, Markus Ahlers, B. Christy, Seth M. Cohen, A. Schukraft, A. Stößl, A. Haj Ismail, K. Jero, E. Blaufuss, D. J. Boersma, J. C. Davis, C. Walck, D. Altmann, S. Seunarine, Francis Halzen, R. Hoffmann, K. Jagielski, P. Zarzhitsky, Matthias Wolf, Reina H. Maruyama, M. Usner, Gerald Przybylski, A. Zilles, R. Franke, M. Zoll, Dirk Ryckbosch, K. Wiebe, R. Eagan, C. Sheremata, G. W. Sullivan, M. Schmitz, S. Westerhoff, Thomas K. Gaisser, G. B. Yodh, O. Fadiran, Y. Abdou, Michael Stamatikos, B. Ruzybayev, J. A. Goodman, A. Christov, Hans Niederhausen, Samvel Ter-Antonyan, Ignacio Taboada, A. Goldschmidt, Thomas Meures, A. Tamburro, Peter Mészáros, T. Waldenmaier, M. Merck, M. Kowalski, J. P. Rodrigues, T. Stezelberger, S. M. Saba, J. van Santen, M. Danninger, Klas Hultqvist, J. Kiryluk, Gary Binder, Axel Groß, O. Jlelati, K. Frantzen, E. Pinat, M. Scheel, F. Clevermann, S. Tilav, Xinhua Bai, S. Bohaichuk, Y. Sestayo, Simona Toscano, L. Rädel, R. W. Ellsworth, Donglian Xu, J. P. Yanez, B. Eberhardt, E. Jacobi, K. Clark, M. Casier, Subir Sarkar, J. Lünemann, R. C. Bay, M. Vehring, D. F. Cowen, C. Ha, P. B. Price, T. O. B. Schmidt, T. R. Wood, Kurt Woschnagg, Paul Evenson, Dmitry Chirkin, D. Bose, Alexander Kappes, M. Krasberg, S. Yoshida, N. van Eijndhoven, G. Kroll, R. Morse, C. Pfendner, T. Salameh, Kael Hanson, T. Fuchs, Steven W. Barwick, Paolo Desiati, H. G. Sander, Chun Xu, A. Obertacke, R. Ström, L. Schulte, S. Schoenen, Thorsten Glusenkamp, W. Huelsnitz, K. Helbing, K. Mase, René Reimann, A. O'Murchadha, S. Hussain, D. J. Koskinen, S. Coenders, S. Schöneberg, J. Feintzeig, Aguilar Sanchez, Juan, Christov, Asen, Montaruli, Teresa, and Rameez, Mohamed more...
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SELECTION ,Particle physics ,Cosmology and Nongalactic Astrophysics (astro-ph.CO) ,ATMOSPHERIC MUON ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,General Physics and Astronomy ,Flux ,Cosmic ray ,ddc:500.2 ,01 natural sciences ,CHARM ,IceCube Neutrino Observatory ,0103 physical sciences ,ddc:550 ,SCATTERING ,010303 astronomy & astrophysics ,Charged current ,High Energy Astrophysical Phenomena (astro-ph.HE) ,Physics ,SPECTRUM ,Neutral current ,010308 nuclear & particles physics ,High Energy Physics::Phenomenology ,ICE ,Glashow resonance ,PERFORMANCE ,3. Good health ,Physics and Astronomy ,High Energy Physics::Experiment ,Neutrino ,Astrophysics - High Energy Astrophysical Phenomena ,SYSTEM ,Astrophysics - Cosmology and Nongalactic Astrophysics ,Bar (unit) - Abstract
We report on the observation of two neutrino-induced events which have an estimated deposited energy in the IceCube detector of 1.04 $\pm$ 0.16 and 1.14 $\pm$ 0.17 PeV, respectively, the highest neutrino energies observed so far. These events are consistent with fully contained particle showers induced by neutral-current $\nu_{e,\mu,\tau}$ ($\bar\nu_{e,\mu,\tau}$) or charged-current $\nu_{e}$ ($\bar\nu_{e}$) interactions within the IceCube detector. The events were discovered in a search for ultra-high energy neutrinos using data corresponding to 615.9 days effective livetime. The expected number of atmospheric background is $0.082 \pm 0.004 \text{(stat)}^{+0.041}_{-0.057} \text{(syst)}$. The probability to observe two or more candidate events under the atmospheric background-only hypothesis is $2.9\times10^{-3}$ ($2.8\sigma$) taking into account the uncertainty on the expected number of background events. These two events could be a first indication of an astrophysical neutrino flux, the moderate significance, however, does not permit a definitive conclusion at this time., Comment: 7 pages, 5 figures, 1 table, accepted for publication in Physical Review Letters more...
- Published
- 2013
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34. The design and performance of IceCube DeepCore
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T. Griesel, K. Wiebe, Carsten Rott, Dave Nygren, J. Miller, M. Bissok, Xianwu Xu, S. Boeser, C. Ha, K. Rawlins, P. Berghaus, M. L. Benabderrahmane, Jay Gallagher, J. K. Becker, R. Nahnhauer, Q. Swillens, Christian Bohm, Aongus O'Murchadha, James Madsen, Jon Dumm, S. Euler, T. Waldenmaier, Thomas Meures, Joanna Kiryluk, A. Stoessl, M. Kowalski, M. Danninger, T. Kowarik, C. Walck, R. Ström, J. Petrovic, A. Olivas, A. Gross, Ignacio Taboada, Teresa Montaruli, S. Grullon, M. J. Carson, K. Andeen, M. V. D'Agostino, Timo Karg, Chris Wendt, M. Stamatikos, Damian Pieloth, M. Labare, P. B. Price, Paraic A. Kenny, Juanan Aguilar, M. J. Larson, M. Merck, A. M. Brown, Takao Kuwabara, A. Tamburro, Xinhua Bai, Markus Ahlers, Allan Hallgren, T. O. B. Schmidt, M. Richman, Fabian Kislat, B. Christy, S. Seunarine, R. Porrata, J. C. Díaz-Vélez, P. O. Hulth, J. Eisch, T. R. Wood, Seth M. Cohen, N. Milke, George Japaridze, R. J. Lauer, W. Huesnitz, Nathan Whitehorn, G. de Vries-Uiterweerd, C. De Clercq, T. Degner, Tim Ruhe, D. Rutledge, M. Walter, Peter Mészáros, O. Engdegård, Kurt Woschnagg, Klas Hultqvist, Samvel Ter-Antonyan, J. A. Goodman, D. Z. Besson, R. Wischnewski, B. Semburg, H. G. Sander, K. Helbing, Markus Ackermann, A. Schultes, Segev BenZvi, Paul Evenson, J. Feintzeig, S. Westerhoff, C. Colnard, Spencer Klein, Aya Ishihara, H. Wissing, A. Marotta, Larissa Paul, Chun Xu, J. Auffenberg, Todor Stanev, Dawn Williams, M. Stueer, Daniel Bindig, B. Hoffmann, F. Descamps, Kara Hoffman, Y. Sestayo, Dmitry Chirkin, H. Taavola, K. Beattie, Albrecht Karle, A. Silvestri, Christian Spiering, A. Tepe, A. H. Cruz Silva, Stijn Buitink, A. Piegsa, Ch. Weaver, O. Schulz, E. Blaufuss, J. C. Davis, S. H. Seo, Dariusz Gora, Hermann Kolanoski, R. Franke, K. Han, Elisa Resconi, Alexander Kappes, A. Franckowiak, Matt Dunkman, K. Mase, J. Berdermann, D. Altmann, K. Meagher, Kael Hanson, Thomas K. Gaisser, G. B. Yodh, T. Fischer-Wasels, Justin Vandenbroucke, Chad Finley, R. Morse, G. W. Sullivan, Wolfgang Rhode, M. Schunck, D. Berley, A. Schukraft, K. Laihem, S. M. Movit, R. Hellauer, T. Abu-Zayyad, Rasha Abbasi, H. Landsman, Dirk Ryckbosch, J. P. Huelss, Martin Wolf, S. Bechet, T. Gluesenkamp, L. Demiroers, M. M. Allen, S. Hussain, Simona Toscano, J. H. Koehne, F. Rothmaier, A. Van Overloop, R. W. Ellsworth, Steven W. Barwick, F. Clevermann, P. Redl, D. J. Koskinen, Donglian Xu, Karen S. Caballero-Mora, Darren Grant, M. Olivo, E. Middell, Elisa Bernardini, A. Goldschmidth, M. Ribordy, J. P. Yanez, M. Vehring, D. F. Cowen, F. A. Fedynitch, Jenni Adams, S. Panknin, J. L. Bazo Alba, J. Luenemann, Karl-Heinz Kampert, Kirill Filimonov, J. J. Beatty, S. Tilav, T. Feusels, S. Hickford, A. Schoenwald, J. Dreyer, Subir Sarkar, J. E. Jacobsen, Marcos Santander, R. G. Stokstad, J. Posselt, Y. Abdou, L. Gerhardt, K. Hoshina, L. Koepke, J. W. Nam, Glenn Spiczak, Reina H. Maruyama, D. Bose, E. Jacobi, U. Naumann, Paolo Desiati, K. H. Becker, D. J. Boersma, J. Blumenthal, H. S. Matis, E. A. Strahler, G. C. Hill, Michael J. Baker, L. Gladstone, Dirk Heinen, D. Seckel, S. Miarecki, A. R. Fazely, Tyce DeYoung, P. A. Toale, A. Homeier, Christopher Wiebusch, J. Daughhetee, R. C. Bay, J. van Santen, J. P. Rodrigues, T. Stezelberger, M. Krasberg, Olga Botner, Francis Halzen, P. Zarzhitsky, O. Fadiran, Henrik J. Johansson, S. Yoshida, N. van Eijndhoven, G. Kroll, K. Schatto, G. Kohnen, D. Tosi, Gerald Przybylski, M. Zoll, A. Haj Ismail, B. D. Fox, Naoko Kurahashi, D. Bertrand, M. Wallraff, M. Voge, M. Gurtner, S. Odrowski, M. Dierckxsens, B. Ruzybayev, C. Pérez de los Heros, Physics, and Elementary Particle Physics more...
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Physics - Instrumentation and Detectors ,Cosmology and Nongalactic Astrophysics (astro-ph.CO) ,Physics::Instrumentation and Detectors ,Astrophysics::High Energy Astrophysical Phenomena ,Dark matter ,FOS: Physical sciences ,Antartica ,Generator ,Astrophysics ,Neutrino telescope ,01 natural sciences ,7. Clean energy ,High Energy Physics - Experiment ,IceCube Neutrino Observatory ,Antarctica ,DeepCore ,Detector ,IceCube ,Neutrino ,High Energy Physics - Experiment (hep-ex) ,WIMP ,0103 physical sciences ,010306 general physics ,Instrumentation and Methods for Astrophysics (astro-ph.IM) ,Physics ,Muon ,010308 nuclear & particles physics ,Ice ,ICE ,Astrophysics::Instrumentation and Methods for Astrophysics ,Astronomy ,Astronomy and Astrophysics ,Instrumentation and Detectors (physics.ins-det) ,GENERATOR ,Supernova ,Air shower ,Physics and Astronomy ,Neutrino detector ,13. Climate action ,ddc:540 ,High Energy Physics::Experiment ,Astrophysics - Instrumentation and Methods for Astrophysics ,Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
The IceCube neutrino observatory in operation at the South Pole, Antarctica, comprises three distinct components: a large buried array for ultrahigh energy neutrino detection, a surface air shower array, and a new buried component called DeepCore. DeepCore was designed to lower the IceCube neutrino energy threshold by over an order of magnitude, to energies as low as about 10 GeV. DeepCore is situated primarily 2100 m below the surface of the icecap at the South Pole, at the bottom center of the existing IceCube array, and began taking physics data in May 2010. Its location takes advantage of the exceptionally clear ice at those depths and allows it to use the surrounding IceCube detector as a highly efficient active veto against the principal background of downward-going muons produced in cosmic-ray air showers. DeepCore has a module density roughly five times higher than that of the standard IceCube array, and uses photomultiplier tubes with a new photocathode featuring a quantum efficiency about 35% higher than standard IceCube PMTs. Taken together, these features of DeepCore will increase IceCube's sensitivity to neutrinos from WIMP dark matter annihilations, atmospheric neutrino oscillations, galactic supernova neutrinos, and point sources of neutrinos in the northern and southern skies. In this paper we describe the design and initial performance of DeepCore., Comment: 22 pages, 13 figures more...
- Published
- 2012
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35. Measurement of the atmospheric neutrino energy spectrum from 100 GeV to 400 TeV with IceCube
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J. W. Nam, Carsten Rott, K. Beattie, O. Schulz, Dave Nygren, J. Miller, S. Seunarine, M. Bissok, S. Odrowski, D. Rutledge, Xianwu Xu, John Clem, J. Petrovic, C. Walck, A. Piegsa, K. Singh, D. Z. Besson, Q. Swillens, T. Krings, A. Van Overloop, K. Mase, E. A. Strahler, M. Ono, J. L. Bazo Alba, T. Feusels, J. Dreyer, Y. Abdou, D. Bertrand, M. Olivo, J. A. Goodman, J. E. Jacobsen, M. Labare, Marcos Santander, K. Rawlins, S. Hussain, N. van Eijndhoven, C. Ha, L. Gerhardt, Hermann Kolanoski, D. J. Koskinen, M. V. D'Agostino, M. L. Benabderrahmane, O. Depaepe, H. G. Sander, James Madsen, Klas Hultqvist, S. Stoyanov, T. DeYoung, R. Nahnhauer, J. van Santen, P. B. Price, G. Stephens, Todor Stanev, Dawn Williams, Jay Gallagher, Ignacio Taboada, S. Panknin, S. Westerhoff, S. Bechet, Chun Xu, Anatoli Fedynitch, Thorsten Glusenkamp, O. Tarasova, Paraic A. Kenny, Juanan Aguilar, J. M. Joseph, Axel Groß, F. Descamps, M. Wallraff, Nathan Whitehorn, S. Cohen, Takao Kuwabara, M. Stamatikos, T. Straszheim, R. Ehrlich, J. Lünemann, M. Gurtner, Teresa Montaruli, C. Pérez de los Heros, A. Tepe, S. Schlenstedt, A. Olivas, B. Christy, P. Redl, Timo Karg, R. C. Bay, Peter Mészáros, G. Kroll, Christian Spiering, R. Franke, T. O. B. Schmidt, E. Middell, Elisa Bernardini, Stijn Buitink, Larissa Paul, M. Ribordy, Tim Ruhe, R. Lehmann, M. Walter, A. Rizzo, J. P. Rodrigues, Jenni Adams, T. Stezelberger, K. Hoshina, Justin Vandenbroucke, W. Huelsnitz, A. Marotta, Glenn Spiczak, Rasha Abbasi, Thomas K. Gaisser, G. B. Yodh, H. Landsman, S. H. Seo, Albrecht Karle, J.-P. Hülß, U. Naumann, R. Morse, D. Berley, G. Wikström, T. Griesel, K. H. Becker, Karl-Heinz Kampert, M. Dierckxsens, S. Hickford, Kurt Woschnagg, Kirill Filimonov, B. Ruzybayev, H. S. Matis, Paul Evenson, R. G. Stokstad, K. Helbing, K. Wiebe, P. O. Hulth, J. Eisch, G. de Vries-Uiterweerd, P. Berghaus, A. Goldschmidt, R. Wischnewski, S. Grullon, M. J. Carson, K. Meagher, F. Clevermann, B. D. Fox, D. Turcan, S. Euler, M. J. Larson, B. Semburg, Francis Halzen, J.-H. Köhne, H. Wissing, P. Zarzhitsky, Fabian Kislat, Dmitry Chirkin, J. C. Díaz-Vélez, Martin Wolf, O. Fadiran, N. Kemming, James E. Braun, H. Taavola, D. Bose, Alexander Kappes, C. Colnard, Aya Ishihara, J. J. Beatty, M. Krasberg, J. Auffenberg, R. J. Lauer, Damian Pieloth, D. Hubert, Christian Bohm, A. Franckowiak, E. Blaufuss, J. C. Davis, T. Abu-Zayyad, Aongus O'Murchadha, J. Posselt, F. Rothmaier, M. Schunck, Ch. Weaver, C. De Clercq, A. Schukraft, Pratik Majumdar, S. Böser, K. Laihem, L. Köpke, Matthias Geisler, Reina H. Maruyama, Segev BenZvi, M. Matusik, Dirk Ryckbosch, S. Yoshida, Chad Finley, Spencer Klein, Darren Grant, Ph. Herquet, G. W. Sullivan, G. C. Hill, D. F. Cowen, Kara Hoffman, Y. Sestayo, S. M. Movit, M. R. Duvoort, Michael J. Baker, Kael Hanson, K. Kuehn, P. Roth, Steven W. Barwick, Wolfgang Rhode, L. Gladstone, D. Seckel, A. Slipak, S. Tilav, Paolo Desiati, A. R. Fazely, P. A. Toale, L. Demirörs, P. Nießen, A. Homeier, Christopher Wiebusch, Jon Dumm, M. Prikockis, T. Waldenmaier, Joanna Kiryluk, M. Kowalski, M. Danninger, T. Kowarik, A. Tamburro, B. Voigt, Xinhua Bai, M. Voge, J. L. Kelley, Markus Ahlers, R. Porrata, Subir Sarkar, Samvel Ter-Antonyan, Thomas Meures, A. Schultes, M. Merck, Karen Andeen, Simona Toscano, R. W. Ellsworth, J. K. Becker, D. J. Boersma, S.J. Lafebre, Chris Wendt, M. M. Foerster, A. Silvestri, Allan Hallgren, J. Blumenthal, N. Milke, George Japaridze, K. Han, O. Engdegård, Olga Botner, Elisa Resconi, Henrik J. Johansson, J. Berdermann, K. Schatto, G. Kohnen, D. Tosi, and Gerald Przybylski more...
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Nuclear and High Energy Physics ,Particle physics ,Physics::Instrumentation and Detectors ,Solar neutrino ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,Deep Ice ,South-Pole ,High Energy Physics - Experiment ,High Energy Physics - Experiment (hep-ex) ,High Energy Physics - Phenomenology (hep-ph) ,ddc:530 ,Muon neutrino ,Neutrino oscillation ,Physics ,High Energy Astrophysical Phenomena (astro-ph.HE) ,Flux ,High Energy Physics::Phenomenology ,Optical-Properties ,Detector ,Solar neutrino problem ,High Energy Physics - Phenomenology ,Neutrino detector ,Measurements of neutrino speed ,Physics::Accelerator Physics ,High Energy Physics::Experiment ,Neutrino astronomy ,Neutrino ,Astrophysics - High Energy Astrophysical Phenomena ,Telescopes - Abstract
A measurement of the atmospheric muon neutrino energy spectrum from 100 GeV to 400 TeV was performed using a data sample of about 18,000 up-going atmospheric muon neutrino events in IceCube. Boosted decision trees were used for event selection to reject mis-reconstructed atmospheric muons and obtain a sample of up-going muon neutrino events. Background contamination in the final event sample is less than one percent. This is the first measurement of atmospheric neutrinos up to 400 TeV, and is fundamental to understanding the impact of this neutrino background on astrophysical neutrino observations with IceCube. The measured spectrum is consistent with predictions for the atmospheric muon neutrino plus muon antineutrino flux., Comment: 19 pages, 24 figures, added background simulation to distribution plots, clarified a few points in the text more...
- Published
- 2010
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36. The IceCube data acquisition system: Signal capture, digitization, and timestamping
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Chris Wendt, Spencer Klein, Subir Sarkar, J. M. Joseph, A. Laundrie, Chad Finley, D. Bertrand, Ignacio Taboada, C. P. McParland, Albrecht Karle, J. Ludvig, A. Silvestri, E. Kujawski, P. B. Price, T. O. B. Schmidt, S. Klepser, H. Kawai, Kara Hoffman, Y. Sestayo, Peter Mészáros, Karen Andeen, J. Ahrens, K. Mase, K. Meagher, Kurt Woschnagg, Paul Evenson, Henrik J. Johansson, A. Goldschmidt, J. Pretz, M. Danninger, Wolfgang Rhode, J. L. Kelley, Todor Stanev, Dawn Williams, W. Huelsnitz, K. Hoshina, A. Piegsa, Aya Ishihara, Markus Ahlers, M. M. Foerster, Dmitry Chirkin, K. Beattie, O. Schulz, Alexander Kappes, M. Gurtner, K. Helbing, Glenn Spiczak, S. Kleinfelder, Kael Hanson, F. Descamps, H. Miyamoto, R. Morse, B. Hughey, Anna Franckowiak, N. Potthoff, Jay Gallagher, K. H. Becker, Allan Hallgren, A. Meli, Steven W. Barwick, Johan Lundberg, T. Waldenmaier, J. W. Nam, M. Ribordy, R. Porrata, C. Vogt, B. D. Fox, P. Berghaus, J. Auffenberg, S. Euler, K. Laihem, K. Rawlins, Damian Pieloth, George Japaridze, D. Hubert, C. Walck, S. J. Patton, Reina H. Maruyama, M. Labare, D. Z. Besson, Samvel Ter-Antonyan, Chance W. Lewis, Paolo Desiati, R. Franke, K. Münich, A. Lucke, K. Kuehn, W. R. Edwards, Thomas K. Gaisser, G. B. Yodh, O. Engdegård, Chinh Vu, Dirk Ryckbosch, R. Ganugapati, A. C. Pohl, J. E. Sopher, D. F. Cowen, S. Stoyanov, D. Glowacki, A. Groß, H. F. Chen, R. Ehrlich, A. Olivas, Carsten Rott, K. Han, H. Wissing, C. Ha, M. Merck, A. Mohr, James Madsen, Soebur Razzaque, T. DeYoung, S. Hussain, L. Köpke, Dave Nygren, R. Nahnhauer, M. Hellwig, A. Van Overloop, Elisa Resconi, C. Roucelle, B. Bingham, Nathan Whitehorn, R. Gozzini, S. Schlenstedt, P. Herquet, S. Odrowski, Marek Kowalski, T. Straszheim, H. S. Matis, R.H. Minor, Joanna Kiryluk, E. Blaufuss, Olga Botner, H. G. Sander, D. Wharton, M. R. Duvoort, A. J. Smith, A. Tepe, O. Tarasova, R. L. Imlay, C. Wiedemann, W.J. Robbins, Julia Becker, D. Turcan, M. Ono, Teresa Montaruli, S. Westerhof, P. Sandstrom, Francis Halzen, T. Burgess, P. Redl, Karl-Heinz Sulanke, B. Christy, R. W. Ellsworth, J. Dreyer, H. Landsman, J. L. Bazo Alba, O. Fadiran, S. Grullon, V. Viscomi, Xianwu Xu, J. P. Dumm, S. Panknin, F. Rothmaier, J. Bolmont, G. Kohnen, D. Breeder, T. Kowarik, O. Depaepe, J.-P. Hülß, D. Leier, D. Tosi, M. Krasberg, Fabian Kislat, T. Messarius, J. P. Rodrigues, J. Lünemann, T. Stezelberger, J. C. Díaz-Vélez, James E. Braun, M. V. D'Agostino, B. Voigt, Darren Grant, T. Feusels, Q. Swillens, M. Baker, L. Demirörs, N. van Eijndhoven, Karl-Heinz Kampert, Kirill Filimonov, C. Song, W. Carithers, J. E. Jacobsen, R. Hardtke, G. W. Sullivan, S. Tilav, Xinhua Bai, M. Olivo, Klas Hultqvist, R. C. Bay, L. Gerhardt, H. Waldmann, C. T. Day, A. Mokhtarani, R. J. Lauer, C. Pérez de los Heros, John Heise, S. Yoshida, S. Seunarine, Christian Spiering, Gerald Przybylski, M. Inaba, E. A. Strahler, S. Böser, M. C. Stoufer, C. De Clercq, Christian Bohm, Konstancja Satalecka, D. Hays, Joseph T. Hodges, T. Becka, Justin Vandenbroucke, D. Rutledge, H. Leich, M. Walter, A. Rizzo, Markus Ackermann, S. M. Movit, S. H. Seo, Rasha Abbasi, D. Berley, John Clem, David A. Schneider, G. C. Hill, A. Muratas, D. J. Boersma, L. Gladstone, D. Seckel, G. Wikström, T. Griesel, Hermann Kolanoski, A. R. Fazely, P. A. Toale, A. W. Jones, T. Castermans, P. Roth, Christopher Wiebusch, Anna Davour, J. Haugen, D. Wahl, Timo Karg, P. O. Hulth, J. Eisch, M. Tluczykont, T. Kuwabara, G. de Vries-Uiterweerd, B. Semburg, Elisa Bernardini, J. Petrovic, R. M. Gunasingha, J. A. Goodman, Jenni Adams, S. Hickford, R. G. Stokstad, R. Wischnewski, Y. Hasegawa, and P. Nießen more...
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AMANDA ,Nuclear and High Energy Physics ,Physics - Instrumentation and Detectors ,Astrophysics::High Energy Astrophysical Phenomena ,Astronomy ,FOS: Physical sciences ,Astrophysics ,Neutrino telescope ,Signal ,High Energy Physics - Experiment ,IceCube Neutrino Observatory ,Nuclear physics ,High Energy Physics - Experiment (hep-ex) ,Icecube ,Data acquisition ,Signal digitization ,ddc:530 ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment ,Instrumentation ,Physics ,business.industry ,Astrophysics (astro-ph) ,Astrophysics::Instrumentation and Methods for Astrophysics ,Timestamping ,Instrumentation and Detectors (physics.ins-det) ,Analog signal ,Transmission (telecommunications) ,Systems design ,Timestamp ,business ,Computer hardware - Abstract
IceCube is a km-scale neutrino observatory under construction at the South Pole with sensors both in the deep ice (InIce) and on the surface (IceTop). The sensors, called Digital Optical Modules (DOMs), detect, digitize and timestamp the signals from optical Cherenkov-radiation photons. The DOM Main Board (MB) data acquisition subsystem is connected to the central DAQ in the IceCube Laboratory (ICL) by a single twisted copper wire-pair and transmits packetized data on demand. Time calibration is maintained throughout the array by regular transmission to the DOMs of precisely timed analog signals, synchronized to a central GPS-disciplined clock. The design goals and consequent features, functional capabilities, and initial performance of the DOM MB, and the operation of a combined array of DOMs as a system, are described here. Experience with the first InIce strings and the IceTop stations indicates that the system design and performance goals have been achieved., 42 pages, 20 figures, submitted to Nuclear Instruments and Methods A more...
- Published
- 2009
- Full Text
- View/download PDF
37. Spitzer survey of the Large Magellanic Cloud, surveying the agents of a galaxy's evolution (SAGE). IV. Dust properties in the interstellar medium
- Author
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Brian Babler, Ed Churchwell, Marilyn R. Meade, Charles W. Engelbracht, Toshiya Ueta, Martin Cohen, Karl D. Gordon, Varoujan Gorjian, Remy Indebetouw, M. S. Oey, Ciska Markwick-Kemper, Antonella Nota, Michael W. Werner, B. Q. For, Suzanne C. Madden, Robert Blum, Jean Philippe Bernard, U. Vijh, Dennis Zaritsky, Lister Staveley-Smith, Joseph L. Hora, Linda J. Smith, Douglas M. Kelly, Jay Gallagher, William B. Latter, Nino Panagia, Jay A. Frogel, Yasuo Fukui, Pablo G. Pérez-González, Hiroshi Shibai, Karl Misselt, Knut Olsen, Claus Leitherer, Deborah Paradis, Margaret Meixner, Norikazu Mizuno, Alexander G. G. M. Tielens, Jason Harris, William T. Reach, Schuyler D. Van Dyk, Francois Boulanger, Toshikazu Onishi, Shuji Sato, Akira Mizuno, Jeremy Mould, Akiko Kawamura, Barbara A. Whitney, Roberta Paladini, and Kevin Volk more...
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Physics ,Luminous infrared galaxy ,Milky Way ,Astronomy ,Astronomy and Astrophysics ,Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Galaxy ,Interstellar medium ,Space and Planetary Science ,Spectral energy distribution ,Hydrogen line ,Astrophysics::Solar and Stellar Astrophysics ,Small Magellanic Cloud ,Astrophysics::Earth and Planetary Astrophysics ,Large Magellanic Cloud ,Astrophysics::Galaxy Astrophysics - Abstract
The goal of this paper is to present the results of a preliminary analysis of the extended infrared (IR) emission by dust in the interstellar medium (ISM) of the Large Magellanic Cloud (LMC). We combine Spitzer Surveying the Agents of Galaxy Evolution (SAGE) and Infrared Astronomical Satellite (IRAS) data and correlate the infrared emission with gas tracers of H I, CO, and Hα. We present a global analysis of the infrared emission as well as detailed modeling of the spectral energy distribution (SED) of a few selected regions. Extended emission by dust associated with the neutral, molecular, and diffuse ionized phases of the ISM is detected at all IR bands from 3.6 μm to 160 μm. The relative abundance of the various dust species appears quite similar to that in the Milky Way (MW) in all the regions we have modeled. We construct maps of the temperature of large dust grains. The temperature map shows variations in the range 12.1-34.7 K, with a systematic gradient from the inner to outer regions, tracing the general distribution of massive stars and individual H II regions as well as showing warmer dust in the stellar bar. This map is used to derive the far-infrared (FIR) optical depth of large dust grains. We find two main departures in the LMC with respect to expectations based on the MW: (1) excess mid-infrared (MIR) emission near 70 μm, referred to as the 70 μm excess, and (2) departures from linear correlation between the FIR optical depth and the gas column density, which we refer to as FIR excess emission. The 70 μm excess increases gradually from the MW to the LMC to the Small Magellanic Cloud (SMC), suggesting evolution with decreasing metallicity. The excess is associated with the neutral and diffuse ionized gas, with the strongest excess region located in a loop structure next to 30 Dor. We show that the 70 μm excess can be explained by a modification of the size distribution of very small grains with respect to that in the MW, and a corresponding mass increase of ≃13% of the total dust mass in selected regions. The most likely explanation is that the 70 μm excess is due to the production of large very small grains (VSG) through erosion of larger grains in the diffuse medium. This FIR excess could be due to intrinsic variations of the dust/gas ratio, which would then vary from 4.6 to 2.3 times lower than the MW values across the LMC, but X_(CO) values derived from the IR emission would then be about three times lower than those derived from the Virial analysis of the CO data. We also investigate the possibility that the FIR excess is associated with an additional gas component undetected in the available gas tracers. Assuming a constant dust abundance in all ISM phases, the additional gas component would have twice the known H I mass. We show that it is plausible that the FIR excess is due to cold atomic gas that is optically thick in the 21 cm line, while the contribution by a pure H_2 phase with no CO emission remains a possible explanation. more...
- Published
- 2008
38. New Results on the Ages of Star Clusters in Region B of M82
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Linda J. Smith, Nate Bastian, Jay Gallagher, M. S. Westmoquette, Gelys Trancho, and Iraklis S. Konstantopoulos
- Subjects
Physics ,Mass distribution ,Astrophysics (astro-ph) ,Large population ,FOS: Physical sciences ,Astronomy and Astrophysics ,Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Optical spectra ,Luminosity ,Star cluster ,Space and Planetary Science ,Young star ,Astrophysics::Solar and Stellar Astrophysics ,Astrophysics::Earth and Planetary Astrophysics ,Spectroscopy ,Astrophysics::Galaxy Astrophysics - Abstract
The post-starburst region B in M82 and its massive star cluster component have been the focus of multiple studies, with reports that there is a large population of coeval clusters of age ~1 Gyr, which were created with a Gaussian initial mass distribution. This is in disagreement with other studies of young star clusters, which invariably find a featureless power-law mass distribution. Here, we present Gemini-North optical spectra of seven star clusters in M82-B and show that their ages are all between 10 and 300 Myr (a factor of 3-100 younger than previous photometric results) and that their extinctions range between near-zero and 4 mag (Av). Using new HST ACS-HRC U-band observations we age date an additional ~30 clusters whose ages/extinctions agree well with those determined from spectroscopy. Completeness tests show that the reported `turn-over' in the luminosity/mass distributions is most likely an artefact, due to the resolved nature of the clusters. We also show that the radial velocities of the clusters are inconsistent with them belonging to a bound region., Comment: To appear in Perez, de Grijs and Gonzalez Delgado (eds.), `Young Massive Star Clusters: Initial Conditions and Environments', 2008, Astrophysics & Space Science more...
- Published
- 2008
- Full Text
- View/download PDF
39. First year performance of the IceCube neutrino telescope
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A. J. Smith, R. Wischnewski, Kael Hanson, T. Burgess, K. Hoshina, Steven W. Barwick, Subir Sarkar, Christian Bohm, Glenn Spiczak, Karen Andeen, P. Steffen, D. Z. Besson, J. Haugen, H. S. Matis, F. Refflinghaus, B. Hughey, David A. Schneider, Yi Wang, Paolo Desiati, E. Blaufuss, Albrecht Karle, K. H. Becker, J. E. Sopher, K. Mase, A. Elcheikh, J. Pretz, J. W. Nam, L. Thollander, G. C. Hill, D. Turcan, Francis Halzen, A. Muratas, L. Demirörs, Claire Pettersen, D. Seckel, S. Grullon, Heiko Geenen, A. R. Fazely, Elisa Bernardini, P. A. Toale, P. Berghaus, T. McCauley, G. W. Sullivan, M. C. Stoufer, S. H. Seo, J.D. Zornoza, H. Landsman, J. Ahrens, G. Kohnen, R. W. Ellsworth, Aya Ishihara, J. M. Joseph, J.N. Bahcall, H. Miyamoto, J. C. Díaz-Vélez, T. Stezelberger, P. Wisniewski, M. Krasberg, M. V. D'Agostino, M. Kestel, M. Ribordy, Jenni Adams, A. Laundrie, S. M. Movit, K. Han, Christian Spiering, M. H. Whitney, D. Hays, Anna Davour, J.-P. Hülß, Ignacio Taboada, T. Messarius, C. Song, Olga Botner, Jay Gallagher, Joseph T. Hodges, W. Wagner, Justin Vandenbroucke, Klas Hultqvist, Peter Mészáros, K. Helbing, D. Hardtke, R. G. Stokstad, P. Herquet, A. Mokhtarani, H. Kawai, Chris Wendt, R. C. Bay, Janet Jacobsen, S. Yoshida, Xinhua Bai, C. T. Day, R. Ehrlich, A. Olivas, N. Kitamura, D. Berley, S. Stoyanov, A. W. Jones, I. Liubarsky, J. Dreyer, T. Castermans, A. Groß, E. A. Strahler, J. Cherwinka, R. M. Gunasingha, A. Silvestri, Ph. Olbrechts, B. Voigt, John Clem, M. Solarz, Christopher Wiebusch, J. E. Hart, Michael Stamatikos, C. Walck, D.W. Atlee, J. A. Goodman, R. Porrata, C.P. Burgess, J. Eisch, D. J. Boersma, J. Baccus, K. Kuehn, W. R. Edwards, C. Mackenzie, P. O. Hulth, Hermann Kolanoski, S. Böser, O. Tarasova, Hakki Ögelman, N. van Eijndhoven, R. Morse, Gerald Przybylski, T. Feser, S. Robbins, J.K. Becker, K.-H. Sulanke, M. Hellwig, H. G. Sander, George Japaridze, Elisa Resconi, S. Hundertmark, James E. Braun, T. Hauschildt, Adam Bouchta, Allan Hallgren, Torsten Harenberg, B. D. Fox, L. Gerhardt, A. Piegsa, A. Rizzo, C. De Clercq, A. Morey, A. Van Overloop, K. Rawlins, Markus Ackermann, K. Münich, M.G. Greene, D. Bertrand, S. Patton, James Madsen, Todor Stanev, Dawn Williams, Soebur Razzaque, Carlos Pena-Garay, T. DeYoung, O. Fadiran, H. Waldmann, Teresa Montaruli, P. Sandstrom, Thomas K. Gaisser, G. B. Yodh, M. Walter, S. Seunarine, D. Rutledge, M. Gurtner, R. Gozzini, M. Bartelt, A. Tepe, R. Nahnhauer, S. Klepser, K. Beattie, P. B. Price, Kurt Woschnagg, Paul Evenson, Dmitry Chirkin, Johan Lundberg, R. Ganugapati, A. C. Pohl, D. F. Cowen, A. Achterberg, Carsten Rott, Dave Nygren, Xianwu Xu, R. Hardtke, H. Wissing, C. Pérez de los Heros, John Heise, T. Becka, G. Wikström, Damian Pieloth, D. Hubert, L. Köpke, H. Leich, A. Meli, Karl-Heinz Kampert, Kirill Filimonov, Spencer Klein, Kara Hoffman, Wolfgang Rhode, J. L. Kelley, S. Schlenstedt, M. R. Duvoort, B. Baret, S. Tilav, P. Nießen, C. P. McParland, and A. Goldschmidt more...
- Subjects
Astroparticle physics ,Physics ,Photomultiplier ,Muon ,Performance ,Detector ,Astrophysics (astro-ph) ,Astronomy ,FOS: Physical sciences ,Astronomy and Astrophysics ,Astrophysics ,IceCube Neutrino Observatory ,Amanda ,IceCube ,Detection ,Data acquisition ,First year ,IceTop ,Neutrino ,South pole ,Astronomia ,Cherenkov radiation - Abstract
The first sensors of the IceCube neutrino observatory were deployed at the South Pole during the austral summer of 2004-2005 and have been producing data since February 2005. One string of 60 sensors buried in the ice and a surface array of eight ice Cherenkov tanks took data until December 2005 when deployment of the next set of strings and tanks began. We have analyzed these data, demonstrating that the performance of the system meets or exceeds design requirements. Times are determined across the whole array to a relative precision of better than 3 ns, allowing reconstruction of muon tracks and light bursts in the ice, of air-showers in the surface array and of events seen in coincidence by surface and deep-ice detectors separated by up to 2.5 km. © 2006 Elsevier B.V. All rights reserved. more...
- Published
- 2006
40. Star Cluster Analyses from Multi-Band Photometry: the Key Advantage of SALT's U-band Sensitivity
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Barbara Cunow, Peter Anders, Thomas Lilly, Uta Fritze-v. Alvensleben, Jay Gallagher, and Polychronis Papaderos
- Subjects
Physics ,010504 meteorology & atmospheric sciences ,Metallicity ,Astrophysics (astro-ph) ,Astronomy ,Spectral density ,FOS: Physical sciences ,Astronomy and Astrophysics ,Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,01 natural sciences ,Galaxy ,Photometry (optics) ,Star cluster ,Space and Planetary Science ,Globular cluster ,0103 physical sciences ,Astrophysics::Solar and Stellar Astrophysics ,Spectroscopy ,010303 astronomy & astrophysics ,Galaxy cluster ,Astrophysics::Galaxy Astrophysics ,0105 earth and related environmental sciences - Abstract
Conventionally, CMD analyses of nearby star clusters are based on observations in 2 passbands. They are plagued by considerable degeneracies between age, metallicity, distance (and extinction) that can largely be resolved by including additional passbands with U being most appropriate for young SCs and I or a NIR band for old globular clusters. For star clusters that cannot be resolved, integrated photometry in suitably selected passbands was shown to be as accurate as spectroscopy in independently revealing ages, metallicities, internal extinction, and photometric masses and their respective 1 sigma uncertainties, when analysed with a dedicated analysis tool for their Spectral Energy Distributions (SEDs) (cf. Anders et al. 2004a, b, de Grijs et al. 2003b). For external galaxies, rich star cluster populations can thus be efficiently analysed using deep exposures in 4 suitable filters. Again, the inclusion of the U-band significantly reduces the uncertainties in the cluster parameters. The age and metallicity distributions of star cluster systems yield valuable information about the formation history of their parent galaxies (Fritze - v. A. 2004). Here, we present our GALEV evolutionary synthesis models for star clusters of various metallicities (Anders, Fritze - v. A. 2003), recently extended to include the time evolution of CMDs, the dedicated SED Analysis Tool AnalySED we developed, show results on the basis of HST data, and present first data for a young star cluster system in the ongoing spiral-spiral merger NGC 1487 obtained with SALT during the SALTICAM Performance Verification Phase., Comment: Contributed Talk, 7 pages, to appear in IAU Symp. 232, ``The Scientific Requirements for Extremely Large Telescopes'', eds. P. Whitelock, B. Leibundgut, M. Dennefeld, Cambridge Univ. Press more...
- Published
- 2006
- Full Text
- View/download PDF
41. Disk Galaxies
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Jay Gallagher, Linda Sparke, and Lynn Matthews
- Published
- 2004
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- View/download PDF
42. Where Does Star Formation End in NGC1058?
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Jay Gallagher, Deidre A. Hunter, Annette M. N. Ferguson, and Rosemary F. G. Wyse
- Subjects
Physics ,Spiral galaxy ,Star formation ,media_common.quotation_subject ,Contrast (vision) ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics::Earth and Planetary Astrophysics ,Astrophysics ,Radius ,Surface brightness ,Astrophysics::Galaxy Astrophysics ,Spiral ,media_common - Abstract
As part of a large project to study the rate, distribution and history of star formation in the outer parts of galactic disks (Ferguson, PhD thesis), we have obtained very deep Ha and B-band images of the nearby face-on spiral NGC1058. Our images reveal extremely low surface brightness outer spiral arms in the B-band which extend well beyond the Holmberg radius and appear to be aligned with underlying HI spiral arms. These features contrast greatly to the flocculent appearance of the innermost regions of the disk and the complete absence of any well defined-arms in the Ha image. The surface brightness profile derived from the B-band image exhibits a sharp fall off in the inner regions of the disk followed by a much shallower decline beyond ∼ R 25 and consequently a single exponential disk cannot be fit to the entire profile. more...
- Published
- 1995
- Full Text
- View/download PDF
43. X-Ray Emission of Nova Puppis 1991: Accretion or a Shocked Shell?
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Marina Orio, Jay Gallagher, Massimo Della Valle, Soelen Balman, and Hakki Oegelman
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Physics ,Space and Planetary Science ,Astronomy ,Astronomy and Astrophysics ,Astrophysics ,Accretion (astrophysics) - Published
- 1996
- Full Text
- View/download PDF
44. Where Does Star Formation End in NGC1058?
- Author
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Annette Ferguson, Rosemary Wyse, Jay Gallagher, and Deidre Hunter
- Abstract
As part of a large project to study the rate, distribution and history of star formation in the outer parts of galactic disks (Ferguson, PhD thesis), we have obtained very deep Hα and B-band images of the nearby face-on spiral NGC1058. Our images reveal extremely low surface brightness outer spiral arms in the B-band which extend well beyond the Holmberg radius and appear to be aligned with underlying HI spiral arms. These features contrast greatly to the flocculent appearance of the innermost regions of the disk and the complete absence of any well defined-arms in the Hα image. The surface brightness profile derived from the B-band image exhibits a sharp fall off in the inner regions of the disk followed by a much shallower decline beyond ~ R25 and consequently a single exponential disk cannot be fit to the entire profile. more...
- Published
- 1995
- Full Text
- View/download PDF
45. Supersoft X-Ray Sources Identified with Be Binaries in the Magellanic Clouds.
- Author
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Valentina Cracco, Marina Orio, Stefano Ciroi, Jay Gallagher, Ralf Kotulla, and Encarni Romero-Colmenero
- Subjects
MAGELLANIC clouds ,DWARF galaxies ,GALAXIES ,WHITE dwarf stars ,COMPACT objects (Astronomy) - Abstract
We investigated four luminous supersoft X-ray sources (SSSs) in the Magellanic Clouds suspected to have optical counterparts of Be spectral type. If the origin of the X-rays is in a very hot atmosphere heated by hydrogen burning in accreted envelopes of white dwarfs (WDs), like in the majority of SSSs, these objects are close binaries with very massive WD primaries. Using the South African Large Telescope, we obtained the first optical spectra of the proposed optical counterparts of two candidate Be stars associated with SUZAKU J0105–72 and XMMU J010147.5–715550, respectively, a transient and a recurrent SSS, and confirmed the proposed Be classification and Small Magellanic Cloud membership. We also obtained new optical spectra of two other Be stars proposed as optical counterparts of the transient SSS XMMU J052016.0–692505 and MAXI J0158–744. The optical spectra with double-peaked emission-line profiles are typical of Be stars and present characteristics similar to many high-mass X-ray binaries with excretion disks truncated by the tidal interaction with a compact object. The presence of a massive WD that sporadically ignites nuclear burning, accreting only at certain orbital or evolutionary phases, explains the supersoft X-ray flares. We measured equivalent widths and distances between line peaks and investigated the variability of the prominent emission-line profiles. The excretion disks seem to be small in size and are likely to be differentially rotating. We discuss possible future observations and the relevance of these objects as a new class of SN Ia progenitors. [ABSTRACT FROM AUTHOR] more...
- Published
- 2018
- Full Text
- View/download PDF
46. Ultraviolet spectroscopy of the recurrent nova U Scorpii during outburst
- Author
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Warren M. Sparks, Jay Gallagher, Edward P. Ney, J. W. Truran, Robert Williams, and Sumner Starrfield
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Physics ,Astrophysics::High Energy Astrophysical Phenomena ,Astronomy ,Astronomy and Astrophysics ,Nova (laser) ,Astrophysics ,Light curve ,Spectral line ,Astronomical spectroscopy ,Space and Planetary Science ,Astrophysics::Solar and Stellar Astrophysics ,Emission spectrum ,Ejecta ,U Scorpii ,Stellar evolution ,Astrophysics::Galaxy Astrophysics - Abstract
Observations of the recurrent nova U Sco during the 1979 outburst are presented, and the spectral evolution is found to differ from that of other recurrent novas. Spectra are dominated by emission lines, and the strong forbidden-line emission characteristic is conspicuously absent. A method to determine masses of nova shells is outlined, and an analysis of the emission lines shows an enrichment in N relative to C and O, and that the nova ejecta are rich in He relative to H. Optical spectra of U Sco obtained following its return to quiescence show predominantly He II emission lines, which suggests an enrichment of the preoutburst gas in He, and thus the presence of a highly evolved companion. more...
- Published
- 1981
- Full Text
- View/download PDF
47. X-Ray Emission from the Nuclear Region of Arp 220.
- Author
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Alessandro Paggi, Giuseppina Fabbiano, Guido Risaliti, Junfeng Wang, Margarita Karovska, Martin Elvis, W. Peter Maksym, Jonathan McDowell, and Jay Gallagher
- Subjects
SPECTRUM analysis ,STARBURSTS ,INFRARED radiation ,X-ray emission spectroscopy ,HEAT - Abstract
We present an imaging and spectral analysis of the nuclear region of the ultraluminous infrared galaxy merger of Arp 220, using deep Chandra-ACIS observations summing up to . Narrowband imaging with subpixel resolution of the innermost nuclear region reveals two distinct Fe–K emitting sources, coincident with the infrared and radio nuclear clusters. These sources are separated by 1′ (∼380 pc). The X-ray emission is extended and elongated in the eastern (E) nucleus, like the disk emission observed in millimeter radio images, suggesting a starburst dominance in this region. We estimate an Fe–K equivalent width of for both sources and observe 2–10 keV luminosities of (western, W) and (E). In the 6–7 keV band the emission from these regions is dominated by the 6.7 keV Fe xxv line, suggesting a contribution from collisionally ionized gas. The thermal energy content of this gas is consistent with the kinetic energy injection in the interstellar medium by SNe II. However, nuclear winds from a hidden active galactic nucleus (AGN) () cannot be excluded. The upper limits on the neutral Fe–Kα flux of the nuclear regions correspond to the intrinsic AGN 2–10 keV luminosities of (W) and (E). For typical AGN spectral energy distributions the bolometric luminosities are (W) and (E), and black hole masses of (W) and (E) are evaluated for Eddington limited AGNs with a standard 10% efficiency. [ABSTRACT FROM AUTHOR] more...
- Published
- 2017
- Full Text
- View/download PDF
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