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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
THE NEEDLE in the 100 deg2 HAYSTACK: UNCOVERING AFTERGLOWS of FERMI GRBs with the PALOMAR TRANSIENT FACTORY
Astrophysical Journal, Volume 806, No. 1, Article 52, Year 2015
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Description
The Fermi Gamma-ray Space Telescope has greatly expanded the number and energy window of observations of gamma-ray bursts (GRBs). However, the coarse localizations of tens to a hundred square degrees provided by the Fermi GRB Monitor instrument have posed a formidable obstacle to locating the bursts' host galaxies, measuring their redshifts, and tracking their panchromatic afterglows. We have built a target-of-opportunity mode for the intermediate Palomar Transient Factory in order to perform targeted searches for Fermi afterglows. Here, we present the results of one year of this program: 8 afterglow discoveries out of 35 searches. Two of the bursts with detected afterglows (GRBs 130702A and 140606B) were at low redshift (z = 0.145 and 0.384, respectively) and had spectroscopically confirmed broad-line Type Ic supernovae. We present our broadband follow-up including spectroscopy as well as X-ray, UV, optical, millimeter, and radio observations. We study possible selection effects in the context of the total Fermi and Swift GRB samples. We identify one new outlier on the Amati relation. We find that two bursts are consistent with a mildly relativistic shock breaking out from the progenitor star rather than the ultra-relativistic internal shock mechanism that powers standard cosmological bursts. Finally, in the context of the Zwicky Transient Facility, we discuss how we will continue to expand this effort to find optical counterparts of binary neutron star mergers that may soon be detected by Advanced LIGO and Virgo. © 2015. The American Astronomical Society. All rights reserved.
Authors & Co-Authors
Singer, Leo P.
United States, Cambridge
Laser Interferometer Gravitational-wave Observatory
United States, Greenbelt
Nasa Goddard Space Flight Center
Kasliwal, Rachna
United States, Pasadena
Carnegie Observatories
Cenko, Stephen Bradley
United States, Greenbelt
Nasa Goddard Space Flight Center
United States, College Park
University of Maryland, College Park
Perley, Daniel A.
United States, Pasadena
California Institute of Technology
Anderson, Gemma E.
United Kingdom, Oxford
University of Oxford
United Kingdom, Southampton
University of Southampton
Anupama, Gadiyara Chakrapani
India, Bengaluru
Indian Institute of Astrophysics
Arcavi, Iair
United States, Santa Barbara
Las Cumbres Observatory Global Telescope Network, Inc
United States, Santa Barbara
University of California, Santa Barbara
Bhalerao, Varun B.
India, Pune
Inter-university Centre for Astronomy and Astrophysics India
Cao, Yi
United States, Pasadena
California Institute of Technology
Connaughton, Valerie
United States, Huntsville
The University of Alabama in Huntsville
Corsi, Alessandra
United States, Lubbock
Texas Tech University
Cucchiara, Antonino
United States, Greenbelt
Nasa Goddard Space Flight Center
Fender, Robert P.
United Kingdom, Oxford
University of Oxford
United Kingdom, Southampton
University of Southampton
Fox, Derek B.
United States, University Park
Pennsylvania State University
Gehrels, Neil C.
United States, Greenbelt
Nasa Goddard Space Flight Center
Gorosabel, Javier
Spain, Granada
Instituto de Astrofísica de Andalucía - Csic
Spain, Leioa
Universidad Del Pais Vasco
Spain, Bilbao
Ikerbasque, Basque Foundation for Science
Horesh, Assaf
Israel, Rehovot
Weizmann Institute of Science Israel
Hurley, Kevin C.
United States, Berkeley
University of California, Berkeley
Johansson, Joel P.
Sweden, Stockholm
Oskar Klein Centre
Kann, David Alexander
Germany, Camburg
Thüringer Landessternwarte Tautenburg
Germany, Garching Bei Munchen
Max Planck Institute for Extraterrestrial Physics
Kouveliotou, Chryssa K.
United States, Huntsville
Nasa Marshall Space Flight Center
Kulkarni, Shrinivas R.
United States, Pasadena
California Institute of Technology
Masci, Frank J.
Unknown Affiliation
Nugent, Peter E.
United States, Berkeley
University of California, Berkeley
United States, Berkeley
Lawrence Berkeley National Laboratory
Rau, Arne
Germany, Garching Bei Munchen
Max Planck Institute for Extraterrestrial Physics
Staley, Tim D.
United Kingdom, Oxford
University of Oxford
United Kingdom, Southampton
University of Southampton
Svinkin, Dmitry S.
Russian Federation, Saint Petersburg
Ioffe Institute
Thöne, Christina C.
Spain, Granada
Instituto de Astrofísica de Andalucía - Csic
de Ugarte Postigo, Antonio
Spain, Granada
Instituto de Astrofísica de Andalucía - Csic
Urata, Yuji
Taiwan, Taoyuan
National Central University
Weinstein, Alan J.R.
United States, Cambridge
Laser Interferometer Gravitational-wave Observatory
Statistics
Citations: 45
Authors: 31
Affiliations: 27
Identifiers
Doi:
10.1088/0004-637X/806/1/52
ISSN:
0004637X
Research Areas
Health System And Policy
Study Design
Cohort Study