Abstract
We present results from a search for a radio transient associated with the LIGO/Virgo source S190814bv, a likely neutron star-black hole (NSBH) merger, with the Australian Square Kilometre Array Pathfinder. We imaged a 30 deg2 field at ΔT = 2, 9, and 33 days post-merger at a frequency of 944 MHz, comparing them to reference images from the Rapid ASKAP Continuum Survey observed 110 days prior to the event. Each epoch of our observations covers 89% of the LIGO/Virgo localization region. We conducted an untargeted search for radio transients in this field, resulting in 21 candidates. For one of these, AT2019osy, we performed multiwavelength follow-up and ultimately ruled out the association with S190814bv. All other candidates are likely unrelated variables, but we cannot conclusively rule them out. We discuss our results in the context of model predictions for radio emission from NSBH mergers and place constrains on the circum-merger density and inclination angle of the merger. This survey is simultaneously the first large-scale radio follow-up of an NSBH merger, and the most sensitive widefield radio transients search to-date.
| Original language | English |
|---|---|
| Article number | L13 |
| Journal | Astrophysical Journal Letters |
| Volume | 887 |
| Issue number | 1 |
| DOIs | |
| State | Published - Dec 10 2019 |
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An ASKAP Search for a Radio Counterpart to the First High-significance Neutron Star-Black Hole Merger LIGO/Virgo S190814bv. / Dobie, Dougal; Stewart, Adam; Murphy, Tara; Lenc, Emil; Wang, Ziteng; Kaplan, David L.; Andreoni, Igor; Banfield, Julie; Brown, Ian; Corsi, Alessandra; De, Kishalay; Goldstein, Daniel A.; Hallinan, Gregg; Hotan, Aidan; Hotokezaka, Kenta; Jaodand, Amruta D.; Karambelkar, Viraj; Kasliwal, Mansi M.; McConnell, David; Mooley, Kunal; Moss, Vanessa A.; Newman, Jeffrey A.; Perley, Daniel A.; Prakash, Abhishek; Pritchard, Joshua; Sadler, Elaine M.; Sharma, Yashvi; Ward, Charlotte; Whiting, Matthew; Zhou, Rongpu.
In: Astrophysical Journal Letters, Vol. 887, No. 1, L13, 10.12.2019.Research output: Contribution to journal › Article › peer-review
TY - JOUR
T1 - An ASKAP Search for a Radio Counterpart to the First High-significance Neutron Star-Black Hole Merger LIGO/Virgo S190814bv
AU - Dobie, Dougal
AU - Stewart, Adam
AU - Murphy, Tara
AU - Lenc, Emil
AU - Wang, Ziteng
AU - Kaplan, David L.
AU - Andreoni, Igor
AU - Banfield, Julie
AU - Brown, Ian
AU - Corsi, Alessandra
AU - De, Kishalay
AU - Goldstein, Daniel A.
AU - Hallinan, Gregg
AU - Hotan, Aidan
AU - Hotokezaka, Kenta
AU - Jaodand, Amruta D.
AU - Karambelkar, Viraj
AU - Kasliwal, Mansi M.
AU - McConnell, David
AU - Mooley, Kunal
AU - Moss, Vanessa A.
AU - Newman, Jeffrey A.
AU - Perley, Daniel A.
AU - Prakash, Abhishek
AU - Pritchard, Joshua
AU - Sadler, Elaine M.
AU - Sharma, Yashvi
AU - Ward, Charlotte
AU - Whiting, Matthew
AU - Zhou, Rongpu
N1 - Funding Information: Dougal Dobie Adam Stewart Tara Murphy Emil Lenc Ziteng Wang David L. Kaplan Igor Andreoni Julie Banfield Ian Brown Alessandra Corsi Kishalay De Daniel A. Goldstein Gregg Hallinan Aidan Hotan Kenta Hotokezaka Amruta D. Jaodand Viraj Karambelkar Mansi M. Kasliwal David McConnell Kunal Mooley Vanessa A. Moss Jeffrey A. Newman Daniel A. Perley Abhishek Prakash Joshua Pritchard Elaine M. Sadler Yashvi Sharma Charlotte Ward Matthew Whiting Rongpu Zhou Dougal Dobie Adam Stewart Tara Murphy Emil Lenc Ziteng Wang David L. Kaplan Igor Andreoni Julie Banfield Ian Brown Alessandra Corsi Kishalay De Daniel A. Goldstein Gregg Hallinan Aidan Hotan Kenta Hotokezaka Amruta D. Jaodand Viraj Karambelkar Mansi M. Kasliwal David McConnell Kunal Mooley Vanessa A. Moss Jeffrey A. Newman Daniel A. Perley Abhishek Prakash Joshua Pritchard Elaine M. Sadler Yashvi Sharma Charlotte Ward Matthew Whiting Rongpu Zhou Sydney Institute for Astronomy, School of Physics, University of Sydney, Sydney, New South Wales 2006, Australia ATNF, CSIRO Astronomy and Space Science, P.O. Box 76, Epping, New South Wales 1710, Australia ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav), Hawthorn, Victoria, Australia Center for Gravitation, Cosmology, and Astrophysics, Department of Physics, University of Wisconsin-Milwaukee, P.O. Box 413, Milwaukee, WI 53201, USA Division of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, CA 91125, USA Department of Physics and Astronomy, Texas Tech University, Box 1051, Lubbock, TX 79409, USA Cahill Center for Astronomy & Astrophysics, Caltech, Pasadena CA, USA ATNF, CSIRO Astronomy and Space Science, P.O. Box 1130, Bentley, WA 6102, Australia Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USA Research Center for the Early Universe, Graduate School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan Department of Physics and Astronomy, University of Pittsburgh, 3941 O’Hara Street, Pittsburgh, PA 15260, USA Pittsburgh Particle Physics, Astrophysics, and Cosmology Center (PITT PACC), Pittsburgh, PA 15260, USA Astrophysics Research Institute, Liverpool John Moores University, IC2, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF, UK IPAC, California Institute of Technology 1200 E California Boulevard, Pasadena, CA 91125, USA Department of Astronomy, University of Maryland, College Park, MD 20742, USA Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA Hubble Fellow. Dougal Dobie, Adam Stewart, Tara Murphy, Emil Lenc, Ziteng Wang, David L. Kaplan, Igor Andreoni, Julie Banfield, Ian Brown, Alessandra Corsi, Kishalay De, Daniel A. Goldstein, Gregg Hallinan, Aidan Hotan, Kenta Hotokezaka, Amruta D. Jaodand, Viraj Karambelkar, Mansi M. Kasliwal, David McConnell, Kunal Mooley, Vanessa A. Moss, Jeffrey A. Newman, Daniel A. Perley, Abhishek Prakash, Joshua Pritchard, Elaine M. Sadler, Yashvi Sharma, Charlotte Ward, Matthew Whiting and Rongpu Zhou 2019-12-10 2019-12-06 13:55:09 cgi/release: Article released bin/incoming: New from .zip Australian Research Council DP190100561 NSF AST-1816492 Australian Research Council Centre of Excellence for Gravitational Wave Discovery CE170100004 NSF 1545949 NSF 1455090 Space Telescope Science Institute HST-HF2-51408.001-A U.S. Department of Energy, Office of Science, Office of High Energy Physic DE-SC0007914 yes We present results from a search for a radio transient associated with the LIGO/Virgo source S190814bv, a likely neutron star–black hole (NSBH) merger, with the Australian Square Kilometre Array Pathfinder. We imaged a 30 deg 2 field at Δ T �=�2, 9, and 33 days post-merger at a frequency of 944 MHz, comparing them to reference images from the Rapid ASKAP Continuum Survey observed 110 days prior to the event. Each epoch of our observations covers 89% of the LIGO/Virgo localization region. We conducted an untargeted search for radio transients in this field, resulting in 21 candidates. For one of these, AT2019osy, we performed multiwavelength follow-up and ultimately ruled out the association with S190814bv. All other candidates are likely unrelated variables, but we cannot conclusively rule them out. We discuss our results in the context of model predictions for radio emission from NSBH mergers and place constrains on the circum-merger density and inclination angle of the merger. This survey is simultaneously the first large-scale radio follow-up of an NSBH merger, and the most sensitive widefield radio transients search to-date. � 2019. The American Astronomical Society. All rights reserved. Andreoni I., Goldstein D. A., Kasliwal M. M. et al 2019 ApJ submitted (arXiv:1910.13409) Andreoni I., Goldstein D. A., Kasliwal M. M. et al ApJ 2019 Ballo L., Heras F. J. H., Barcons X. and Carrera F. J. 2012 A&A 545 A66 10.1051/0004-6361/201117464 Ballo L., Heras F. J. 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PY - 2019/12/10
Y1 - 2019/12/10
N2 - We present results from a search for a radio transient associated with the LIGO/Virgo source S190814bv, a likely neutron star-black hole (NSBH) merger, with the Australian Square Kilometre Array Pathfinder. We imaged a 30 deg2 field at ΔT = 2, 9, and 33 days post-merger at a frequency of 944 MHz, comparing them to reference images from the Rapid ASKAP Continuum Survey observed 110 days prior to the event. Each epoch of our observations covers 89% of the LIGO/Virgo localization region. We conducted an untargeted search for radio transients in this field, resulting in 21 candidates. For one of these, AT2019osy, we performed multiwavelength follow-up and ultimately ruled out the association with S190814bv. All other candidates are likely unrelated variables, but we cannot conclusively rule them out. We discuss our results in the context of model predictions for radio emission from NSBH mergers and place constrains on the circum-merger density and inclination angle of the merger. This survey is simultaneously the first large-scale radio follow-up of an NSBH merger, and the most sensitive widefield radio transients search to-date.
AB - We present results from a search for a radio transient associated with the LIGO/Virgo source S190814bv, a likely neutron star-black hole (NSBH) merger, with the Australian Square Kilometre Array Pathfinder. We imaged a 30 deg2 field at ΔT = 2, 9, and 33 days post-merger at a frequency of 944 MHz, comparing them to reference images from the Rapid ASKAP Continuum Survey observed 110 days prior to the event. Each epoch of our observations covers 89% of the LIGO/Virgo localization region. We conducted an untargeted search for radio transients in this field, resulting in 21 candidates. For one of these, AT2019osy, we performed multiwavelength follow-up and ultimately ruled out the association with S190814bv. All other candidates are likely unrelated variables, but we cannot conclusively rule them out. We discuss our results in the context of model predictions for radio emission from NSBH mergers and place constrains on the circum-merger density and inclination angle of the merger. This survey is simultaneously the first large-scale radio follow-up of an NSBH merger, and the most sensitive widefield radio transients search to-date.
UR - http://www.scopus.com/inward/record.url?scp=85077645386&partnerID=8YFLogxK
U2 - 10.3847/2041-8213/ab59db
DO - 10.3847/2041-8213/ab59db
M3 - Article
AN - SCOPUS:85077645386
VL - 887
JO - Astrophysical Journal Letters
JF - Astrophysical Journal Letters
SN - 2041-8205
IS - 1
M1 - L13
ER -