Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 885, Issue 1, Pages -Publisher
IOP Publishing Ltd
DOI: 10.3847/2041-8213/ab4ad8
Keywords
Gravitational wave astronomy; Transient detection; Optical telescopes
Categories
Funding
- GROWTH (Global Relay of Observatories Watching Transients Happen) project funded by the National Science Foundation under PIRE grant [1545949]
- UK Science and Technology Facilities Council
- National Science Foundation [AST-1440341, 1106171, 1258333]
- Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231]
- Indo-US Science and Technology Forum (IUSSTF)
- Science and Engineering Research Board (SERB) of the Department of Science and Technology (DST), Government of India [IUSSTF/PIRE Program/GROWTH/2015-16]
- MoST [105-2112-M-008-024-MY3]
- Caltech Space Innovation Council
- Murty family
- Mount Cuba Foundation
- Heising-Simons Foundation
- ANU Futures Scheme
- Binational Science Foundation
- Caltech
- SERB
- IUSSTF
- Knut and Alice Wallenberg Foundation
- Israeli Ministry of Science
- ISF
- Minerva
- BSF
- BSF transformative program
- I-CORE Program of the Planning and Budgeting Committee
- Israel Science Foundation [1829/12]
- NASA Earth and Space Science Fellowship [ASTRO18F-0085]
- Ministry of Science and Technology (Taiwan) [104-2923-M-008-004-MY5, 106-2112-M-008-007, 107-2119-M-008012, 107-2119-M-008-014-MY2]
- University of Washington College of Arts and Sciences, Department of Astronomy
- DIRAC Institute
- Large Synoptic Survey Telescope
- Department of Energy [DE-AC02-76SF00515]
- SLAC National Accelerator Laboratory
- LSSTC
- NSF AAG [1812779]
- Heising-Simons Foundation [2018-0908]
- David and Ellen Lee Postdoctoral Fellowship at the California Institute of Technology
- National Aeronautics and Space Administration
- NSF [AST-1816492]
- Ministry of Science and Technology of the Republic of China (Taiwan) [106-2628-M-007-005, 107-2628-M-007-003]
- Gordon and Betty Moore Foundation Data-Driven Discovery grant
- NSF Cybertraining Grant [1829740]
- Brinson Foundation
- Moore Foundation
- PMA Division Medberry Fellowship at the California Institute of Technology
- G.R.E.A.T research environment - Swedish National Science Foundation
- Australian Government Research Training Program (RTP) Scholarship
- European Research Council (ERC) under the European Union [759194]
- National Science Foundation
- National Optical Astronomical Observatory
- IPAC
- Weizmann Institute for Science
- Oskar Klein Center at Stockholm University
- University of Maryland
- University of Washington
- Deutsches Elektronen-Synchrotron
- Humboldt University, Los Alamos National Laboratories
- TANGO Consortium of Taiwan
- University of Wisconsin at Milwaukee
- Lawrence Berkeley National Laboratories
- STFC [ST/S006176/1, ST/R000484/1, ST/L00061X/1, ST/F007159/1, ST/P006892/1] Funding Source: UKRI
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1812779] Funding Source: National Science Foundation
- European Research Council (ERC) [759194] Funding Source: European Research Council (ERC)
Ask authors/readers for more resources
The third observing run by LVC has brought the discovery of many compact binary coalescences. Following the detection of the first binary neutron star merger in this run (LIGO/Virgo S190425z), we performed a dedicated follow-up campaign with the Zwicky Transient Facility (ZTF) and Palomar Gattini-IR telescopes. The initial skymap of this single-detector gravitational wave (GW) trigger spanned most of the sky observable from Palomar Observatory. Covering 8000 deg(2) of the initial skymap over the next two nights, corresponding to 46% integrated probability, ZTF system achieved a depth of 21 m(AB) in g- and r-bands. Palomar Gattini-IR covered 2200 square degrees in J-band to a depth of 15.5 mag, including 32% integrated probability based on the initial skymap. The revised skymap issued the following day reduced these numbers to 21% for the ZTF and 19% for Palomar Gattini-IR. We narrowed 338,646 ZTF transient ?alerts? over the first two nights of observations to 15 candidate counterparts. Two candidates, ZTF19aarykkb and ZTF19aarzaod, were particularly compelling given that their location, distance, and age were consistent with the GW event, and their early optical light curves were photometrically consistent with that of kilonovae. These two candidates were spectroscopically classified as young core-collapse supernovae. The remaining candidates were ruled out as supernovae. Palomar Gattini-IR did not identify any viable candidates with multiple detections only after merger time. We demonstrate that even with single-detector GW events localized to thousands of square degrees, systematic kilonova discovery is feasible.
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