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105 results on '"Christophersen, Marc"'

1. STROBE-X High Energy Modular Array (HEMA)

Author

Hutcheson, Anthony L., Feroci, Marco, Argan, Andrea, Antonelli, Matias, Barbera, Marco, Bayer, Jorg, Bellutti, Pierluigi, Bertuccio, Giuseppe, Bonvicini, Valter, Cadoux, Franck, Campana, Riccardo, Vignali, Matteo Centis, Ceraudo, Francesco, Christophersen, Marc, Cirrincione, Daniela, D'Anca, Fabio, De Angelis, Nicolas, De Rosa, Alessandra, Della Casa, Giovanni, Del Monte, Ettore, Dilillo, Giuseppe, Evangelista, Yuri, Favre, Yannick, Ficorella, Francesco, Fiorini, Mauro, Ford, Jeremy J., Grassi, Marco, Grove, J. Eric, Guzman, Alejandro, Heddermann, Paul, Kole, Merlin R., Cicero, Ugo Lo, Lombardi, Giovanni, Malcovati, Piero, Michalska, Malgorzata, Meuris, Aline, Minervini, Gabriele, Nowosielski, Witold, Nuti, Alessio, Pacciani, Luigi, Pepponi, Giancarlo, Persyn, Steven C., Picciotto, Antonino, Pliego, Samuel, Rachevski, Alexander, Rashevskaya, Irina, Ray, Paul S., Samusenko, Alina, Santangelo, Andrea, Schanne, Stephane, Schwendeman, Carl L., Sleator, Clio, Smith, Jacob R., Sveda, Libor, Svoboda, Jiri, Tenzer, Christoph, Todaro, Michela, Trois, Alessio, Vacchi, Andrea, Xiong, Hao, Wang, Xianqi, Wu, Xin, Wulf, Eric A., Zampa, Gianluigi, Zampa, Nicola, Zdziarski, Andrzej, and Zorzi, Nicola

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The High Energy Modular Array (HEMA) is one of three instruments that compose the STROBE-X mission concept. The HEMA is a large-area, high-throughput non-imaging pointed instrument based on the Large Area Detector developed as part of the LOFT mission concept. It is designed for spectral timing measurements of a broad range of sources and provides a transformative increase in sensitivity to X-rays in the energy range of 2--30 keV compared to previous instruments, with an effective area of 3.4 m$^{2}$ at 8.5 keV and an energy resolution of better than 300 eV at 6 keV in its nominal field of regard., Comment: 16 pages, 10 figures

Published
2024
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2. STROBE-X Mission Overview

Author

Ray, Paul S., Roming, Peter W. A., Argan, Andrea, Arzoumanian, Zaven, Ballantyne, David R., Bogdanov, Slavko, Bonvicini, Valter, Brandt, Terri J., Bursa, Michal, Cackett, Edward M., Chakrabarty, Deepto, Christophersen, Marc, Coderre, Kathleen M., De Geronimo, Gianluigi, Del Monte, Ettore, DeRosa, Alessandra, Dietz, Harley R., Evangelista, Yuri, Feroci, Marco, Ford, Jeremy J., Froning, Cynthia, Fryer, Christopher L., Gendreau, Keith C., Goldstein, Adam, Gonzalez, Anthony H., Hartmann, Dieter, Hernanz, Margarita, Hutcheson, Anthony, Zand, Jean in `t, Jenke, Peter, Kennea, Jamie, Lloyd-Ronning, Nicole M., Maccarone, Thomas J., Maes, Dominic, Markwardt, Craig B., Michalska, Malgorzata, Okajima, Takashi, Patruno, Alessandro, Persyn, Steven C., Phillips, Mark L., Prescod-Weinstein, Chanda, Redfern, Jillian A., Remillard, Ronald A., Santangelo, Andrea, Schwendeman, Carl L., Sleator, Clio, Steiner, James, Strohmayer, Tod E., Svoboda, Jiri, Tenzer, Christoph, Thompson, Steven P., Warwick, Richard W., Watts, Anna L., Wilson-Hodge, Colleen A., Wu, Xin, Wulf, Eric A., and Zampa, Gianluigi

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

We give an overview of the science objectives and mission design of the Spectroscopic Time-Resolving Observatory for Broadband Energy X-rays (STROBE-X) observatory, which has been proposed as a NASA probe-class (~$1.5B) mission in response to the Astro2020 recommendation for an X-ray probe., Comment: 11 pages, 5 figures, accepted for publication in JATIS

Published
2024

3. STROBE-X: X-ray Timing and Spectroscopy on Dynamical Timescales from Microseconds to Years

Author

Ray, Paul S., Arzoumanian, Zaven, Ballantyne, David, Bozzo, Enrico, Brandt, Soren, Brenneman, Laura, Chakrabarty, Deepto, Christophersen, Marc, DeRosa, Alessandra, Feroci, Marco, Gendreau, Keith, Goldstein, Adam, Hartmann, Dieter, Hernanz, Margarita, Jenke, Peter, Kara, Erin, Maccarone, Tom, McDonald, Michael, Nowak, Michael, Phlips, Bernard, Remillard, Ron, Stevens, Abigail, Tomsick, John, Watts, Anna, Wilson-Hodge, Colleen, Wood, Kent, Zane, Silvia, Ajello, Marco, Alston, Will, Altamirano, Diego, Antoniou, Vallia, Arur, Kavitha, Ashton, Dominic, Auchettl, Katie, Ayres, Tom, Bachetti, Matteo, Balokovic, Mislav, Baring, Matthew, Baykal, Altan, Begelman, Mitch, Bhat, Narayana, Bogdanov, Slavko, Briggs, Michael, Bulbul, Esra, Bult, Petrus, Burns, Eric, Cackett, Ed, Campana, Riccardo, Caspi, Amir, Cavecchi, Yuri, Chenevez, Jerome, Cherry, Mike, Corbet, Robin, Corcoran, Michael, Corsi, Alessandra, Degenaar, Nathalie, Drake, Jeremy, Eikenberry, Steve, Enoto, Teruaki, Fragile, Chris, Fuerst, Felix, Gandhi, Poshak, Garcia, Javier, Gonzalez, Anthony, Grefenstette, Brian, Grinberg, Victoria, Grossan, Bruce, Guillot, Sebastien, Guver, Tolga, Haggard, Daryl, Heinke, Craig, Heinz, Sebastian, Hemphill, Paul, Homan, Jeroen, Hui, Michelle, Huppenkothen, Daniela, Ingram, Adam, Irwin, Jimmy, Jaisawal, Gaurava, Jaodand, Amruta, Kalemci, Emrah, Kaplan, David, Keek, Laurens, Kennea, Jamie, Kerr, Matthew, van der Klis, Michiel, Kocevski, Daniel, Koss, Mike, Kowalski, Adam, Lai, Dong, Lamb, Fred, Laycock, Silas, Lazio, Joseph, Lazzati, Davide, Longcope, Dana, Loewenstein, Michael, Maitra, Dipankair, Majid, Walid, Maksym, W. Peter, Malacaria, Christian, Margutti, Raffaella, Martindale, Adrian, McHardy, Ian, Meyer, Manuel, Middleton, Matt, Miller, Jon, Miller, Cole, Motta, Sara, Neilsen, Joey, Nelson, Tommy, Noble, Scott, O'Brien, Paul, Osborne, Julian, Osten, Rachel, Ozel, Feryal, Palliyaguru, Nipuni, Pasham, Dheeraj, Patruno, Alessandro, Pelassa, Vero, Petropoulou, Maria, Pilia, Maura, Pohl, Martin, Pooley, David, Prescod-Weinstein, Chanda, Psaltis, Dimitrios, Raaijmakers, Geert, Reynolds, Chris, Riley, Thomas E., Salvesen, Greg, Santangelo, Andrea, Scaringi, Simone, Schanne, Stephane, Schnittman, Jeremy, Smith, David, Smith, Krista Lynne, Snios, Bradford, Steiner, Andrew, Steiner, Jack, Stella, Luigi, Strohmayer, Tod, Sun, Ming, Tauris, Thomas, Taylor, Corbin, Tohuvavohu, Aaron, Vacchi, Andrea, Vasilopoulos, Georgios, Veledina, Alexandra, Walsh, Jonelle, Weinberg, Nevin, Wilkins, Dan, Willingale, Richard, Wilms, Joern, Winter, Lisa, Wolff, Michael, Zand, Jean in 't, Zezas, Andreas, Zhang, Bing, and Zoghbi, Abdu

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present the Spectroscopic Time-Resolving Observatory for Broadband Energy X-rays (STROBE-X), a probe-class mission concept selected for study by NASA. It combines huge collecting area, high throughput, broad energy coverage, and excellent spectral and temporal resolution in a single facility. STROBE-X offers an enormous increase in sensitivity for X-ray spectral timing, extending these techniques to extragalactic targets for the first time. It is also an agile mission capable of rapid response to transient events, making it an essential X-ray partner facility in the era of time-domain, multi-wavelength, and multi-messenger astronomy. Optimized for study of the most extreme conditions found in the Universe, its key science objectives include: (1) Robustly measuring mass and spin and mapping inner accretion flows across the black hole mass spectrum, from compact stars to intermediate-mass objects to active galactic nuclei. (2) Mapping out the full mass-radius relation of neutron stars using an ensemble of nearly two dozen rotation-powered pulsars and accreting neutron stars, and hence measuring the equation of state for ultradense matter over a much wider range of densities than explored by NICER. (3) Identifying and studying X-ray counterparts (in the post-Swift era) for multiwavelength and multi-messenger transients in the dynamic sky through cross-correlation with gravitational wave interferometers, neutrino observatories, and high-cadence time-domain surveys in other electromagnetic bands. (4) Continuously surveying the dynamic X-ray sky with a large duty cycle and high time resolution to characterize the behavior of X-ray sources over an unprecedentedly vast range of time scales. STROBE-X's formidable capabilities will also enable a broad portfolio of additional science., Comment: 50 pages, Probe class mission concept study report submitted to NASA for Astro2020 Decadal Survey

Published
2019

7. Self-Organized Formation of Fractal and Regular Pores in Semiconductors

Author

Claussen, Jens Christian, Carstensen, Jürgen, Christophersen, Marc, Langa, Sergiu, and Föll, Helmut

Subjects
Condensed Matter - Materials Science
Abstract

Electrochemical etching of semiconductors, beside technical applications, provides an interesting experimental setup for self-organized structure formation capable of regular, diameter-modulated, and branching pores. The underlying dynamical processes governing current transfer and structure formation are described by the Current-Burst-Model: all dissolution processes are assumed to occur inhomogeneously in time and space as a Current Burst (CB); properties and interactions between CB's are described by a number of material- and chemistry- dependent ingredients, like passivation and aging of surfaces in different crystallographic orientations, giving a qualitative understanding of resulting pore morphologies., Comment: 6 pages, 10 figures (reduced resolution)

Published
2006
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8. Self-organized pore formation and open-loop-control in semiconductor etching

Author

Claussen, Jens Christian, Carstensen, Jürgen, Christophersen, Marc, Langa, Sergiu, and Föll, Helmut

Subjects
Condensed Matter - Materials Science, Condensed Matter - Disordered Systems and Neural Networks
Abstract

Electrochemical etching of semiconductors, apart from many technical applications, provides an interesting experimental setup for self-organized structure formation capable e.g. of regular, diameter-modulated, and branching pores. The underlying dynamical processes governing current transfer and structure formation are described by the Current-Burst-Model: all dissolution processes are assumed to occur inhomogeneously in time and space as a Current Burst (CB); the properties and interactions between CB's are described by a number of material- and chemistry- dependent ingredients, like passivation and aging of surfaces in different crystallographic orientations, giving a qualitative understanding of resulting pore morphologies. These morphologies cannot be influenced only by the current, by chemical, material and other etching conditions, but also by an open-loop control, triggering the time scale given by the oxide dissolution time. With this method, under conditions where only branching pores occur, the additional signal hinders side pore formation resulting in regular pores with modulated diameter.

Published
2006
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13. STROBE-X: X-Ray Timing & Spectroscopy on Dynamical Timescales from Microseconds to Years

Author

Wilson-Hodge, Colleen A, Ray, Paul S, Maccarone, Tom, Arzoumanian, Zaven, Gendreau, Keith, Chakrabarty, Deepto, Remillard, Ron, Jenke, Peter, Feroci, Marco, Zane, Silvia, Brandt, Soren, DeRosa, Alessandra, Hernanz, Margarita, Watts, Anna, Wood, Kent, Tomsick, John, Brenneman, Laura, Ballantyne, David, McDonald, Mike, Goldstein, Adam, Stevens, Abbie, Bozzo, Enrico, Hartmann, Dieter, Phlips, Bernard, and Christophersen, Marc

Subjects
Astronautics (General)
Published
2019

16. Self-Organized Formation of Fractal and Regular Pores in Semiconductors

Author

Claussen, Jens Christian, Carstensen, Jürgen, Christophersen, Marc, Langa, Sergiu, Föll, Helmut, Barth, Timothy J., editor, Griebel, Michael, editor, Keyes, David E., editor, Nieminen, Risto M., editor, Roose, Dirk, editor, Schlick, Tamar, editor, Emmerich, Heike, editor, Nestler, Britta, editor, and Schreckenberg, Michael, editor

Published
2003
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21. STROBE-X: capturing the universe in motion

Author

den Herder, Jan-Willem A., Nikzad, Shouleh, Nakazawa, Kazuhiro, Froning, Cynthia S., Roming, Pete, Ray, Paul, Argan, Andrea, Arzoumanian, Zaven, Bogdanov, Slavko, Bonvicini, Valter, Brandt, Terri J., Bursa, Michal, Cackett, Edward M., Chakrabarty, Deepto, Christophersen, Marc, Coderre, Kathleen M., De Geronimo, Gianluigi, Del Monte, Ettore, De Rosa, Alessandra, Dietz, Harley R., Evangelista, Yuri, Feroci, Marco, Ford, Jeremy J., Fryer, Christopher L., Gendreau, Keith C., Goldstein, Adam, Gonzalez, Anthony H., Hernanz, Margarita, Hutcheson, Anthony, in 't Zand, Jean, Jenke, Peter, Kennea, Jamie, Lloyd-Ronning, Nicole, Maccarone, Tom, Maes, Dominic, Markwardt, Craig, Michalska, Malgorzata, Okajima, Takashi, Patruno, Alessandro, Persyn, Steven C., Phillips, Mark L., Prescod-Weinstein, Chanda, Redfern, Jillian A., Remillard, Ronald A., Santangelo, Andrea, Schwendeman, Carl L., Sleator, Clio, Steiner, James F., Strohmayer, Tod E., Svoboda, Jiri, Tenzer, Christoph, Thompson, Steven P., Warwick, Richard W., Watts, Anna L., Wilson-Hodge, Colleen, Wu, Xin, Wulf, Eric A., and Zampa, Gianluigi

Published
2024
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31. Self-Organized Formation of Fractal and Regular Pores in Semiconductors

Author

Claussen, Jens Christian, Carstensen, Jürgen, Christophersen, Marc, Langa, Sergiu, and Föll, Helmut

Subjects
Condensed Matter - Materials Science, Materials Science (cond-mat.mtrl-sci), FOS: Physical sciences
Abstract

Electrochemical etching of semiconductors, beside technical applications, provides an interesting experimental setup for self-organized structure formation capable of regular, diameter-modulated, and branching pores. The underlying dynamical processes governing current transfer and structure formation are described by the Current-Burst-Model: all dissolution processes are assumed to occur inhomogeneously in time and space as a Current Burst (CB); properties and interactions between CB's are described by a number of material- and chemistry- dependent ingredients, like passivation and aging of surfaces in different crystallographic orientations, giving a qualitative understanding of resulting pore morphologies., Comment: 6 pages, 10 figures (reduced resolution)

Published
2007
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