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Your search keyword '"Krause, Elisabeth"' showing total 6 results
Start Over Author "Krause, Elisabeth" Publisher escholarship, university of california
6 results on '"Krause, Elisabeth"'

1. Cosmology from clustering, cosmic shear, CMB lensing, and cross correlations: combining Rubin observatory and Simons Observatory

Author

Fang, Xiao, Eifler, Tim, Schaan, Emmanuel, Huang, Hung-Jin, Krause, Elisabeth, and Ferraro, Simone

Subjects
Astronomical Sciences, Physical Sciences, cosmological parameters, cosmology: theory, large-scale structure of Universe, Astronomical and Space Sciences, Astronomy & Astrophysics, Astronomical sciences, Particle and high energy physics, Space sciences
Abstract

In the near future, the overlap of the Rubin Observatory Legacy Survey of Space and Time (LSST) and the Simons Observatory (SO) will present an ideal opportunity for joint cosmological data set analyses. In this paper, we simulate the joint likelihood analysis of these two experiments using six two-point functions derived from galaxy position, galaxy shear, and CMB lensing convergence fields. Our analysis focuses on realistic noise and systematics models and we find that the dark energy Figure of merit (FoM) increases by 53 per cent (92 per cent) from LSST-only to LSST+SO in Year 1 (Year 6). We also investigate the benefits of using the same galaxy sample for both clustering and lensing analyses, and find the choice improves the overall signal to noise by ∼30−40 per cent, which significantly improves the photo-z calibration and mildly improves the cosmological constraints. Finally, we explore the effects of catastrophic photo-z outliers finding that they cause significant parameter biases when ignored. We develop a new mitigation approach termed ‘island model’, which corrects a large fraction of the biases with only a few parameters while preserving the constraining power.

Published
2021

2. Combining information from multiple cosmological surveys: inference and modeling challenges

Author

Alonso, David, Calabrese, Erminia, Eifler, Tim, Fabbian, Giulio, Ferraro, Simone, Gawiser, Eric, Hill, J Colin, Krause, Elisabeth, Madhavacheril, Mathew, Slosar, Anže, and Spergel, David N

Subjects
astro-ph.CO, astro-ph.GA, astro-ph.IM
Abstract

The tightest and most robust cosmological results of the next decade will beachieved by bringing together multiple surveys of the Universe. This endeavorhas to happen across multiple layers of the data processing and analysis, e.g.,enhancements are expected from combining Euclid, Rubin, and Roman (as well asother surveys) not only at the level of joint processing and catalogcombination, but also during the post-catalog parts of the analysis such as thecosmological inference process. While every experiment builds their ownanalysis and inference framework and creates their own set of simulations,cross-survey work that homogenizes these efforts, exchanges information fromnumerical simulations, and coordinates details in the modeling of astrophysicaland observational systematics of the corresponding datasets is crucial.

Published
2021

3. Inflation and Dark Energy from spectroscopy at $z > 2$

Author

Ferraro, Simone, Wilson, Michael J, Abidi, Muntazir, Alonso, David, Ansarinejad, Behzad, Armstrong, Robert, Asorey, Jacobo, Avelino, Arturo, Baccigalupi, Carlo, Bandura, Kevin, Battaglia, Nicholas, Bavdhankar, Chetan, Bernal, José Luis, Beutler, Florian, Biagetti, Matteo, Blanc, Guillermo A, Blazek, Jonathan, Bolton, Adam S, Borrill, Julian, Frye, Brenda, Buckley-Geer, Elizabeth, Bull, Philip, Burgess, Cliff, Byrnes, Christian T, Cai, Zheng, Castander, Francisco J, Castorina, Emanuele, Chang, Tzu-Ching, Chaves-Montero, Jonás, Chen, Shi-Fan, Chen, Xingang, Balland, Christophe, Yèche, Christophe, Cohn, JD, Coulton, William, Courtois, Helene, Croft, Rupert AC, Cyr-Racine, Francis-Yan, D'Amico, Guido, Dawson, Kyle, Delabrouille, Jacques, Dey, Arjun, Doré, Olivier, Douglass, Kelly A, Yutong, Duan, Dvorkin, Cora, Eggemeier, Alexander, Eisenstein, Daniel, Fan, Xiaohui, Ferreira, Pedro G, Font-Ribera, Andreu, Foreman, Simon, García-Bellido, Juan, Gerbino, Martina, Gluscevic, Vera, Gontcho, Satya Gontcho A, Green, Daniel, Guy, Julien, Hahn, ChangHoon, Hanany, Shaul, Handley, Will, Hathi, Nimish, Hawken, Adam J, Hernández-Aguayo, César, Hložek, Renée, Huterer, Dragan, Ishak, Mustapha, Kamionkowski, Marc, Karagiannis, Dionysios, Keeley, Ryan E, Kehoe, Robert, Khatri, Rishi, Kim, Alex, Kneib, Jean-Paul, Kollmeier, Juna A, Kovetz, Ely D, Krause, Elisabeth, Krolewski, Alex, L'Huillier, Benjamin, Landriau, Martin, Levi, Michael, Liguori, Michele, Linder, Eric, Lukić, Zarija, Macorra, Axel de la, Plazas, Andrés A, Marshall, Jennifer L, Martini, Paul, Masui, Kiyoshi, McDonald, Patrick, Meerburg, P Daniel, Meyers, Joel, Mirbabayi, Mehrdad, Moustakas, John, Myers, Adam D, Palanque-Delabrouille, Nathalie, Newburgh, Laura, Newman, Jeffrey A, Niz, Gustavo, and Padmanabhan, Hamsa

Subjects
astro-ph.CO, astro-ph.GA
Abstract

The expansion of the Universe is understood to have accelerated during twoepochs: in its very first moments during a period of Inflation and much morerecently, at $z < 1$, when Dark Energy is hypothesized to drive cosmicacceleration. The undiscovered mechanisms behind these two epochs representsome of the most important open problems in fundamental physics. The largecosmological volume at $2 < z < 5$, together with the ability to efficientlytarget high-$z$ galaxies with known techniques, enables large gains in thestudy of Inflation and Dark Energy. A future spectroscopic survey can test theGaussianity of the initial conditions up to a factor of ~50 better than ourcurrent bounds, crossing the crucial theoretical threshold of$\sigma(f_{NL}^{\rm local})$ of order unity that separates single field andmulti-field models. Simultaneously, it can measure the fraction of Dark Energyat the percent level up to $z = 5$, thus serving as an unprecedented test ofthe standard model and opening up a tremendous discovery space.

Published
2019

4. Looking through the same lens: Shear calibration for LSST, Euclid, and WFIRST with stage 4 CMB lensing

Author

Schaan, Emmanuel, Krause, Elisabeth, Eifler, Tim, Doré, Olivier, Miyatake, Hironao, Rhodes, Jason, and Spergel, David N

Subjects
astro-ph.CO, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

The next-generation weak lensing surveys (i.e., LSST, Euclid, and WFIRST) will require exquisite control over systematic effects. In this paper, we address shear calibration and present the most realistic forecast to date for LSST/Euclid/WFIRST and CMB lensing from a stage 4 CMB experiment ("CMB S4"). We use the cosmolike code to simulate a joint analysis of all the two-point functions of galaxy density, galaxy shear, and CMB lensing convergence. We include the full Gaussian and non-Gaussian covariances and explore the resulting joint likelihood with Monte Carlo Markov chains. We constrain shear calibration biases while simultaneously varying cosmological parameters, galaxy biases, and photometric redshift uncertainties. We find that CMB lensing from CMB S4 enables the calibration of the shear biases down to 0.2%-3% in ten tomographic bins for LSST (below the ∼0.5% requirements in most tomographic bins), down to 0.4%-2.4% in ten bins for Euclid, and 0.6%-3.2% in ten bins for WFIRST. For a given lensing survey, the method works best at high redshift where shear calibration is otherwise most challenging. This self-calibration is robust to Gaussian photometric redshift uncertainties and to a reasonable level of intrinsic alignment. It is also robust to changes in the beam and the effectiveness of the component separation of the CMB experiment, and slowly dependent on its depth, making it possible with third-generation CMB experiments such as AdvACT and SPT-3G, as well as the Simons Observatory.

Published
2017

5. Science Impacts of the SPHEREx All-Sky Optical to Near-Infrared Spectral Survey: Report of a Community Workshop Examining Extragalactic, Galactic, Stellar and Planetary Science

Author

Doré, Olivier, Werner, Michael W, Ashby, Matt, Banerjee, Pancha, Battaglia, Nick, Bauer, James, Benjamin, Robert A, Bleem, Lindsey E, Bock, Jamie, Boogert, Adwin, Bull, Philip, Capak, Peter, Chang, Tzu-Ching, Chiar, Jean, Cohen, Seth H, Cooray, Asantha, Crill, Brendan, Cushing, Michael, Putter, Roland de, Driver, Simon P, Eifler, Tim, Feng, Chang, Ferraro, Simone, Finkbeiner, Douglas, Gaudi, B Scott, Greene, Tom, Hillenbrand, Lynne, Höflich, Peter A, Hsiao, Eric, Huffenberger, Kevin, Jansen, Rolf A, Jeong, Woong-Seob, Joshi, Bhavin, Kim, Duho, Kim, Minjin, Kirkpatrick, J Davy, Korngut, Phil, Krause, Elisabeth, Kriek, Mariska, Leistedt, Boris, Li, Aigen, Lisse, Carey M, Mauskopf, Phil, Mechtley, Matt, Melnick, Gary, Mohr, Joseph, Murphy, Jeremiah, Neben, Abraham, Neufeld, David, Nguyen, Hien, Pierpaoli, Elena, Pyo, Jeonghyun, Rhodes, Jason, Sandstrom, Karin, Schaan, Emmanuel, Schlaufman, Kevin C, Silverman, John, Su, Kate, Stassun, Keivan, Stevens, Daniel, Strauss, Michael A, Tielens, Xander, Tsai, Chao-Wei, Tolls, Volker, Unwin, Stephen, Viero, Marco, Windhorst, Rogier A, and Zemcov, Michael

Subjects
astro-ph.CO, astro-ph.GA
Abstract

SPHEREx is a proposed SMEX mission selected for Phase A. SPHEREx will carryout the first all-sky spectral survey and provide for every 6.2" pixel aspectra between 0.75 and 4.18 $\mu$m [with R$\sim$41.4] and 4.18 and 5.00$\mu$m [with R$\sim$135]. The SPHEREx team has proposed three specific scienceinvestigations to be carried out with this unique data set: cosmic inflation,interstellar and circumstellar ices, and the extra-galactic background light.It is readily apparent, however, that many other questions in astrophysics andplanetary sciences could be addressed with the SPHEREx data. The SPHEREx teamconvened a community workshop in February 2016, with the intent of enlistingthe aid of a larger group of scientists in defining these questions. This papersummarizes the rich and varied menu of investigations that was laid out. Itincludes studies of the composition of main belt and Trojan/Greek asteroids;mapping the zodiacal light with unprecedented spatial and spectral resolution;identifying and studying very low-metallicity stars; improving stellarparameters in order to better characterize transiting exoplanets; studyingaliphatic and aromatic carbon-bearing molecules in the interstellar medium;mapping star formation rates in nearby galaxies; determining the redshift ofclusters of galaxies; identifying high redshift quasars over the full sky; andproviding a NIR spectrum for most eROSITA X-ray sources. All of theseinvestigations, and others not listed here, can be carried out with the nominalall-sky spectra to be produced by SPHEREx. In addition, the workshop definedenhanced data products and user tools which would facilitate some of thesescientific studies. Finally, the workshop noted the high degrees of synergybetween SPHEREx and a number of other current or forthcoming programs,including JWST, WFIRST, Euclid, GAIA, K2/Kepler, TESS, eROSITA and LSST.

Published
2016

6. Dark Energy and Modified Gravity

Author

Slosar, Anže, Abazajian, Kevork N., Ahmed, Zeeshan, Alonso, David, Amin, Mustafa A., Ansarinejad, Behzad, Armstrong, Robert, Asorey, Jacobo, Avelino, Arturo, Avila, Santiago, Baccigalupi, Carlo, Ballardini, Mario, Bandura, Kevin, Battaglia, Nicholas, Bender, Amy N., Bennett, Charles, Benson, Bradford, Beutler, Florian, Bianchini, F., Bilicki, Maciej, Bischoff, Colin, Biviano, Andrea, Blazek, Jonathan, Bleem, Lindsey, Bolton, Adam S., Bond, J. Richard, Borrill, Julian, Bose, Sownak, Boucaud, Alexandre, Bouchet, Francois R., Buckley-Geer, Elizabeth, Bull, Philip, Cai, Zheng, Carlstrom, John E., Castander, Francisco J., Castorina, Emanuele, Challinor, Anthony, Chang, Tzu-Ching, Chaves-Montero, Jonas, Chisari, Nora Elisa, Clowe, Douglas, Comparat, Johan, Cooray, Asantha, Croft, Rupert A. C., Cyr-Racine, Francis-Yan, D Amico, Guido, Davis, Tamara M., Dawson, Kyle, Demarteau, Marcel, Dey, Arjun, Dore, Olivier, Yutong, Duan, Dunkley, Joanna, Dvorkin, Cora, Eggemeier, Alexander, Eisenstein, Daniel, Ellison, John, Engelen, Alexander, Escoffier, Stephanie, Fabbian, Giulio, Ferraro, Simone, Ferreira, Pedro G., Font-Ribera, Andreu, Foreman, Simon, Fosalba, Pablo, Friedrich, Oliver, Garcıa-Bellido, Juan, Gerbino, Martina, Gill, Mandeep S. S., Gluscevic, Vera, Gontcho A Gontcho, Satya, Gorski, Krzysztof M., Gruen, Daniel, Gudmundsson, Jon E., Gupta, Nikhel, Guy, Julien, Hanany, Shaul, Handley, Will, Hernández-Aguayo, César, Hill, J. Colin, Hirata, Christopher M., Hlozek, Renée, Holder, Gilbert, Huterer, Dragan, Ishak, Mustapha, Jeltema, Tesla, Jha, Saurabh W., Cohen-Tanugi, Johann, Johnson, Bradley, Kamionkowski, Marc, Karkare, Kirit S., E Keeley, Ryan, Khatri, Rishi, Kirkby, David, Kisner, Theodore, Kneib, Jean-Paul, Knox, Lloyd, Koushiappas, Savvas M., Kovetz, Ely D., Koyama, Kazuya, Krause, Elisabeth, Benjamin L'Huillier, Lahav, Ofer, Lattanzi, Massimiliano, Leonard, Danielle, Levi, Michael, Liguori, Michele, Linden, Anja, Loverde, Marilena, Lukic, Zarija, La Macorra, Axel, Madhavacheril, Mathew, Plazas, Andres, Spurio Mancini, Alessio, Manera, Marc, Mantz, Adam, Martini, Paul, Masui, Kiyoshi, Mcmahon, Jeff, Meerburg, P. Daniel, Mertens, James, Meyers, Joel, More, Surhud, Motloch, Pavel, Mukherjee, Suvodip, Muñoz, Julian B., Myers, Adam D., Nagy, Johanna, Palanque-Delabrouille, Nathalie, Newburgh, Laura, Newman, Jeffrey A., Niemack, Michael D., Niz, Gustavo, Nomerotski, Andrei, O Connor, Paul, Page, Lyman, Palmese, Antonella, Penna-Lima, Mariana, Percival, Will J., Piacentni, Francesco, Pieri, Matthew M., Pierpaoli, Elena, Pogosian, Levon, Prakash, Abhishek, Pryke, Clement, Puglisi, Giuseppe, Stompor, Radek, Raveri, Marco, Reichardt, Christian L., Rhodes, Jason, Rodney, Steven, Rose, Benjamin, Ross, Ashley J., Rossi, Graziano, Ruhl, John, Saliwanchik, Benjamin, Samushia, Lado, Sanchez, Javier, Sasaki, Misao, Schaan, Emmanuel, Schlegel, David J., Schmittfull, Marcel, Schubnell, Michael, Scott, Douglas, Sehgal, Neelima, Senatore, Leonardo, Seo, Hee-Jong, Shafieloo, Arman, Shan, Huanyuan, Sherwin, Blake D., Shi, Feng, Simon, Sara, Slosar, Anze, Staggs, Suzanne, Starkman, Glenn, Stebbins, Albert, Suzuki, Aritoki, Switzer, Eric R., Timbie, Peter, Tolley, Andrew J., Tristram, Matthieu, Trodden, Mark, Troxel, M. A., Uhlemann, Cora, Umilta, Caterina, Urenna-Lopez, L. Arturo, Di Valentino, Eleonora, Vargas-Magana, M., Vieregg, Abigail, Walter, Christopher W., Wang, Yi, Watson, Scott, White, Martin, Whitehorn, Nathan, Wu, W. L. K., Xu, Weishuang, Yasini, Siavash, Zaldarriaga, Matias, Zhao, Gong-Bo, Zheng, Yi, Zhu, Hong-Ming, Zhu, Ningfeng, Zuntz, Joe, AstroParticule et Cosmologie (APC (UMR_7164)), 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, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Univers et Particules de Montpellier (LUPM), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), HEP, INSPIRE, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Observatoire de Paris, and PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
cosmological model, Hubble constant, Cosmology and Nongalactic Astrophysics (astro-ph.CO), gravitation: model, FOS: Physical sciences, cosmic background radiation, baryon: oscillation: acoustic, gravitation: lens, statistical analysis, supernova, Sunyaev-Zel'dovich effect, astro-ph.CO, galaxy: cluster, expansion: acceleration, [PHYS.ASTR] Physics [physics]/Astrophysics [astro-ph], dark energy, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Despite two decades of tremendous experimental and theoretical progress, the riddle of the accelerated expansion of the Universe remains to be solved. On the experimental side, our understanding of the possibilities and limitations of the major dark energy probes has evolved; here we summarize the major probes and their crucial challenges. On the theoretical side, the taxonomy of explanations for the accelerated expansion rate is better understood, providing clear guidance to the relevant observables. We argue that: i) improving statistical precision and systematic control by taking more data, supporting research efforts to address crucial challenges for each probe, using complementary methods, and relying on cross-correlations is well motivated; ii) blinding of analyses is difficult but ever more important; iii) studies of dark energy and modified gravity are related; and iv) it is crucial that R&D for a vibrant dark energy program in the 2030s be started now by supporting studies and technical R&D that will allow embryonic proposals to mature. Understanding dark energy, arguably the biggest unsolved mystery in both fundamental particle physics and cosmology, will remain one of the focal points of cosmology in the forthcoming decade., 5 pages + references; science white paper submitted to the Astro2020 decadal survey

Published
2019

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