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3 results on '"Natl Ctr Supercomputing Applicat"'

1. Discovery of a z = 0.65 post-starburst BAL quasar in the DES supernova fields

Author

Samuel Hinton, G. Gutierrez, Nikolav Kuropatkin, M. J. Childress, David J. James, Tim Abbot, Edward Macaulay, Karl Glazebrook, Michael Schubnell, Nick Seymour, Brad E. Tucker, Shantanu Desai, Ramon Miquel, E. J. Sanchez, S. Allam, Robert A. Gruendl, Kyler Kuehn, A. Benoit-Lévy, Basillio Santiago, Daniel Thomas, Emmanuel Bertin, Kevin Riel, A. Camero Rosell, Alistair R. Walker, K. Honscheid, Geraint F. Lewis, Marcelle Soares-Santos, A. A. Plazas, Marcio A. G. Maia, Molly E. C. Swanson, D. Mudd, Daniel Gruen, Manda Banerji, Fang Yuan, Luiz N. da Costa, B. Flaugher, Flavia Sobreira, Matias Carrasco Kind, Gregory Tarle, E. Suchyta, Suk Sien Tie, Rob Sharp, David J. Brooks, Thomas Diehl, Bradley M. Peterson, Robert Connon Smith, Syed Uddin, Chris Lidman, Tim Eifler, I. Sevilla-Noarbe, D. A. Finley, Ricardo L. C. Ogando, J. Carretero, Tamara M. Davis, Filipe B. Abdalla, Richard G. McMahon, Bonnie Zhang, Paul Martini, 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), DES, Ohio State Univ, Australian Astron Observ, Univ Cambridge, Univ Queensland, CAASTRO ARC Ctr Excellence All Sky Astrophys, Australian Natl Univ, Curtin Univ, Univ Southampton, Univ Sydney, Natl Optic Astron Observ, UCL, Rhodes Univ, Fermilab Natl Accelerator Lab, Inst Astrophys Paris, Sorbonne Univ, Lab Interinst Astron LIneA, Observ Nacl, Univ Illinois, Natl Ctr Supercomputing Applicat, IEEC CSIC, Barcelona Inst Sci & Technol, Excellence Cluster Univ, Ludwig Maximilians Univ Munchen, Univ Penn, CALTECH, Swinburne Univ Technol, Stanford Univ, SLAC Natl Accelerator Lab, Inst Catalana Recerca & Estudis Avancats, Ctr Invest Energet Medioambientales & Tecnol CIEM, Univ Fed Rio Grande do Sul, Univ Michigan, Universidade Estadual Paulista (Unesp), Oak Ridge Natl Lab, Univ Portsmouth, Institut d'Astrophysique de Paris ( IAP ), and Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS )

Subjects
Cosmology and Gravitation, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Active galactic nucleus, absorption lines [Quasars], active [Galaxies], [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], astro-ph.GA, Astrophysics::High Energy Astrophysical Phenomena, galaxies: active, FOS: Physical sciences, galaxies: starburst, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, symbols.namesake, Populacoes estelares, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, OVV quasar, Formacao de estrelas, 010303 astronomy & astrophysics, Quasars, STFC, Astrophysics::Galaxy Astrophysics, Physics, Supermassive black hole, 010308 nuclear & particles physics, Star formation, Astronomy, Balmer series, RCUK, Galaxias Starburst, Astronomy and Astrophysics, Quasar, Astrophysics - Astrophysics of Galaxies, Galaxy, Galáxias ativas, quasars: absorption lines, Supernova, starburst [Galaxies], Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), symbols, astro-ph.CO, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present the discovery of a z=0.65 low-ionization broad absorption line (LoBAL) quasar in a post-starburst galaxy in data from the Dark Energy Survey (DES) and spectroscopy from the Australian Dark Energy Survey (OzDES). LoBAL quasars are a minority of all BALs, and rarer still is that this object also exhibits broad FeII (an FeLoBAL) and Balmer absorption. This is the first BAL quasar that has signatures of recently truncated star formation, which we estimate ended about 40 Myr ago. The characteristic signatures of an FeLoBAL require high column densities, which could be explained by the emergence of a young quasar from an early, dust-enshrouded phase, or by clouds compressed by a blast wave. The age of the starburst component is comparable to estimates of the lifetime of quasars, so if we assume the quasar activity is related to the truncation of the star formation, this object is better explained by the blast wave scenario., 7 pages, 4 figures, and 1 table; Submitted to MNRAS. For a brief video summarizing the paper, please see the Coffee Brief at this link: https://www.youtube.com/watch?v=jLhHSFU9u3g&feature=youtu.be Authors updated!

Published
2017

2. A DECAM SEARCH FOR AN OPTICAL COUNTERPART TO THE LIGO GRAVITATIONAL-WAVE EVENT GW151226

Author

Wen-fai Fong, Brian Yanny, Shantanu Desai, John Marriner, A. K. Romer, D. L. Burke, R. C. Thomas, A. A. Plazas, A. Fausti Neto, Armin Rest, A. Carnero Rosell, D. L. Tucker, Eliot Quataert, Richard Kessler, William Wester, Kyler Kuehn, V. A. Villar, E. Suchyta, August E. Evrard, Philip S. Cowperthwaite, A. Benoit-Lévy, Keith Bechtol, K. Honscheid, Kevin Reil, M. Carrasco Kind, Robert C. Nichol, Peter K. G. Williams, Daniel Scolnic, G. Strampelli, Eric H. Neilsen, Marcos Lima, D. J. Brout, V. Scarpine, Felipe Menanteau, Edo Berger, Alex Drlica-Wagner, Derek B. Fox, Brian Nord, Gregory Tarle, Daniel Kasen, Raffaella Margutti, G. Gutierrez, Masao Sako, R. C. Smith, Carlos Cunha, I. Sevilla-Noarbe, Huan Lin, Juan Garcia-Bellido, Ryan Chornock, Ben Farr, David J. James, Ramon Miquel, Brian D. Metzger, Pablo Fosalba, Robert Armstrong, L. N. da Costa, Duncan A. Brown, Alistair R. Walker, S. Allam, Robert A. Gruendl, Hsin-Yu Chen, Maria R. Drout, Marcelle Soares-Santos, J. Annis, Zoheyr Doctor, Flavia Sobreira, Thomas Matheson, M. W. G. Johnson, Jennifer L. Marshall, S. B. Cenko, F. B. Abdalla, Elisabeth Krause, Joseph J. Mohr, Joshua A. Frieman, Tommaso Giannantonio, H. T. Diehl, M. S. S. Gill, Daniel Thomas, E. Buckley-Geer, David Brooks, Francisco J. Castander, E. Bertin, Marcio A. G. Maia, Michael D. Johnson, Ken Herner, Nathan Smith, Daniel Gruen, D. A. Finley, J. Carretero, D. W. Gerdes, Daniel A. Goldstein, J. P. Dietrich, Jochen Weller, T. M. C. Abbott, R. J. Foley, E. J. Sanchez, C. B. D'Andrea, Nikolay Kuropatkin, Daniel E. Holz, Ricardo L. C. Ogando, UAM. Departamento de Física Teórica, Harvard Smithsonian Ctr Astrophys, Fermilab Natl Accelerator Lab, Univ Penn, Syracuse Univ, NASA, Univ Maryland, Univ Chicago, Ohio Univ, Univ Calif Santa Cruz, Univ Illinois, Univ Arizona, Penn State Univ, Univ Autonoma Madrid, Stanford Univ, SLAC Natl Accelerator Lab, Natl Ctr Supercomputing Applicat, Univ Calif Berkeley, Lawrence Berkeley Natl Lab, NYU, Natl Opt Astron Observ, Columbia Univ, Space Telescope Sci Inst, Universidade Estadual Paulista (Unesp), Lab Interinst E Astron LIneA, UCL, Rhodes Univ, Princeton Univ, Univ Wisconsin, CNRS, Univ Paris 06, Observ Nacl, IEEC CSIC, Barcelona Inst Sci & Technol, Univ Portsmouth, Univ Southampton, Univ Munich, Excellence Cluster Universe, Univ Michigan, Univ Cambridge, Ohio State Univ, Australian Astron Observ, Universidade de São Paulo (USP), Texas A&M Univ, Inst Catalana Recerca & Estudis Avancats, Max Planck Inst Extraterr Phys, CALTECH, Univ Sussex, and Ctr Invest Energet Medioambientales & Tecnol CIEM

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), close [binaries], FOS: Physical sciences, Astrophysics, Surveys, Kilonova, Astronomy & Astrophysics, 01 natural sciences, Gravitational waves, neutron [stars], surveys, Stars: Neutron, 0103 physical sciences, GW151226, 010303 astronomy & astrophysics, STFC, QB, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, astro-ph.HE, 010308 nuclear & particles physics, Gravitational wave, Detector, Física, RCUK, Astronomy and Astrophysics, Galaxy, LIGO, Binaries: Close, Supernova, gravitational waves, 13. Climate action, Space and Planetary Science, Dark energy, astro-ph.CO, Catalogs, Astrophysics - High Energy Astrophysical Phenomena, catalogs, Astronomical and Space Sciences, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Astrophysical Journal Letters 826.2 (2016): L29 reproduced by permission of the AAS, We report the results of a Dark Energy Camera optical follow-up of the gravitational-wave (GW) event GW151226, discovered by the Advanced Laser Interferometer Gravitational-wave Observatory detectors. Our observations cover 28.8 deg2 of the localization region in the i and z bands (containing 3% of the BAYESTAR localization probability), starting 10 hr after the event was announced and spanning four epochs at 2-24 days after the GW detection. We achieve 5σ point-source limiting magnitudes of i ≈ 21.7 and z ≈ 21.5, with a scatter of 0.4 mag, in our difference images. Given the two-day delay, we search this area for a rapidly declining optical counterpart with ≥ 3σ significance steady decline between the first and final observations. We recover four sources that pass our selection criteria, of which three are cataloged active galactic nuclei. The fourth source is offset by 5.8 arcsec from the center of a galaxy at a distance of 187 Mpc, exhibits a rapid decline by 0.5 mag over 4 days, and has a red color of i - z ≈ 0.3 mag. These properties could satisfy a set of cuts designed to identify kilonovae. However, this source was detected several times, starting 94 days prior to GW151226, in the Pan-STARRS Survey for Transients (dubbed as PS15cdi) and is therefore unrelated to the GW event. Given its long-term behavior, PS15cdi is likely a Type IIP supernova that transitioned out of its plateau phase during our observations, mimicking a kilonova-like behavior. We comment on the implications of this detection for contamination in future optical follow-up observations, P.S.C. is grateful for support provided by the NSF through the Graduate Research Fellowship Program, grant DGE1144152. R. J.F. gratefully acknowledges support from NSF grant AST– 1518052 and the Alfred P. Sloan Foundation. D.E.H. was supported by NSF CAREER grant PHY-1151836. He also acknowledges support from the Kavli Institute for Cosmological Physics at the University of Chicago through NSF grant PHY- 1125897 as well as an endowment from the Kavli Foundation. The DES Data Management System is supported by the NSF under grant number AST-1138766. The DES participants from Spanish institutions are partially supported by MINECO under grants AYA2012-39559, ESP2013-48274, FPA2013-47986, and Centro de Excelencia Severo Ochoa SEV-2012-0234. Research leading to these results has received funding from the ERC under the EU’s 7th Framework Programme including grants ERC 240672, 291329,and 306478

Published
2016

3. Cross-correlation of gravitational lensing from DES Science Verification data with SPT and Planck lensing

Author

Martin Crocce, P. Martini, Daniel Gruen, Risa H. Wechsler, Joaquin Vieira, D. W. Gerdes, M. Sako, Andrina Nicola, David J. James, A. Benoit-Lévy, Gilbert Holder, Eli S. Rykoff, Pablo Fosalba, Gary Bernstein, C. J. Miller, Matthew R. Becker, Flavia Sobreira, A. Roodman, Marcos Lima, Tommaso Giannantonio, R. L. C. Ogando, V. Scarpine, Ramon Miquel, G. Simard, A. Carnero Rosell, M. March, Eduardo Rozo, David Brooks, M. E. C. Swanson, C. Bonnett, Adam Amara, K. Honscheid, Shantanu Desai, I. Sevilla-Noarbe, E. Suchyta, August E. Evrard, N. Kuropatkin, Alexandre Refregier, B. Flaugher, L. N. da Costa, E. Sheldon, Gregory Tarle, Peter Doel, Steve Kent, P. Larsen, Y. Omori, F. B. Abdalla, H. T. Diehl, David Bacon, Jochen Weller, Bhuvnesh Jain, Niall MacCrann, Vinu Vikram, Josh Frieman, T. M. Crawford, Michael Schubnell, M. Carrasco Kind, Robert C. Nichol, D. L. Burke, Ofer Lahav, Christian L. Reichardt, Robert A. Gruendl, Bradford Benson, R. C. Smith, Michael Troxel, K. T. Story, Tim Eifler, T. M. C. Abbott, C. B. D'Andrea, J. Carretero, T. Kacprzak, E. J. Sanchez, Daniel A. Goldstein, Kyler Kuehn, J. P. Dietrich, Sarah Bridle, Scott Dodelson, Chihway Chang, Carlos E. Cunha, R. Cawthon, Daniel Thomas, E. Buckley-Geer, Peter Melchior, R. A. Bernstein, Joe Zuntz, Donnacha Kirk, Lindsey Bleem, Marcelle Soares-Santos, M. Jarvis, A. A. Plazas, Diego Capozzi, John E. Carlstrom, UCL, McGill Univ, Univ Paris 06, CNRS, Fermilab Natl Accelerator Lab, Univ Chicago, ETH, Univ Cambridge, Univ Portsmouth, CSIC, Univ Penn, Univ Manchester, Stanford Univ, Univ Illinois, Argonne Natl Lab, Natl Opt Astron Observ, Rhodes Univ, Carnegie Observ, Barcelona Inst Sci & Technol, SLAC Natl Accelerator Lab, Lab Interinst & Astron LIneA, Observ Nacl, Natl Ctr Supercomputing Applicat, Univ Southampton, Excellence Cluster Univ, Univ Munich, CALTECH, Univ Michigan, Univ Calif Berkeley, Max Planck Inst Extraterr Phys, Ohio State Univ, Australian Astron Observ, Universidade de São Paulo (USP), Princeton Univ, Inst Catalana Rec & Estudis Avancats, Univ Melbourne, Univ Arizona, CIEMAT, and Universidade Estadual Paulista (Unesp)

Subjects
Cosmology and Gravitation, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Cosmic microwave background, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, cosmic background radiation, 01 natural sciences, Cosmology, symbols.namesake, weak [gravitational lensing], 0103 physical sciences, data analysis [methods], Planck, 010303 astronomy & astrophysics, Weak gravitational lensing, STFC, Physics, 010308 nuclear & particles physics, RCUK, Astronomy and Astrophysics, Engineering physics, Redshift, South Pole Telescope, Gravitational lens, 13. Climate action, Space and Planetary Science, symbols, Dark energy, astro-ph.CO, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We measure the cross-correlation between weak lensing of galaxy images and of the cosmic microwave background (CMB). The effects of gravitational lensing on different sources will be correlated if the lensing is caused by the same mass fluctuations. We use galaxy shape measurements from 139 deg$^{2}$ of the Dark Energy Survey (DES) Science Verification data and overlapping CMB lensing from the South Pole Telescope (SPT) and Planck. The DES source galaxies have a median redshift of $z_{\rm med} {\sim} 0.7$, while the CMB lensing kernel is broad and peaks at $z{\sim}2$. The resulting cross-correlation is maximally sensitive to mass fluctuations at $z{\sim}0.44$. Assuming the Planck 2015 best-fit cosmology, the amplitude of the DES$\times$SPT cross-power is found to be $A = 0.88 \pm 0.30$ and that from DES$\times$Planck to be $A = 0.86 \pm 0.39$, where $A=1$ corresponds to the theoretical prediction. These are consistent with the expected signal and correspond to significances of $2.9 \sigma$ and $2.2 \sigma$ respectively. We demonstrate that our results are robust to a number of important systematic effects including the shear measurement method, estimator choice, photometric redshift uncertainty and CMB lensing systematics. Significant intrinsic alignment of galaxy shapes would increase the cross-correlation signal inferred from the data; we calculate a value of $A = 1.08 \pm 0.36$ for DES$\times$SPT when we correct the observations with a simple IA model. With three measurements of this cross-correlation now existing in the literature, there is not yet reliable evidence for any deviation from the expected LCDM level of cross-correlation, given the size of the statistical uncertainties and the significant impact of systematic errors, particularly IAs. We provide forecasts for the expected signal-to-noise of the combination of the five-year DES survey and SPT-3G., Comment: 13 pages, 6 figures

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