2020ApJ...903...75G

Query : 2020ApJ...903...75G

2020ApJ...903...75G - Astrophys. J., 903, 75-75 (2020/November-1)

A DESGW search for the electromagnetic counterpart to the LIGO/Virgo gravitational-wave binary neutron star merger candidate S190510g.

GARCIA A., MORGAN R., HERNER K., PALMESE A., SOARES-SANTOS M., ANNIS J., BROUT D., VIVAS A.K., DRLICA-WAGNER A., SANTANA-SILVA L., TUCKER D.L., ALLAM S., WIESNER M., GARCIA-BELLIDO J., GILL M.S.S., SAKO M., KESSLER R., DAVIS T.M., SCOLNIC D., CASARES J., CHEN H., CONSELICE C., COOKE J., DOCTOR Z., FOLEY R.J., HORVATH J., HOWELL D.A., KILPATRICK C.D., LIDMAN C., OLIVARES E.F., PAZ-CHINCHON F., PINEDA-G. J., QUIROLA-VASQUEZ J., REST A., SHERMAN N., ABBOTT T.M.C., AGUENA M., AVILA S., BERTIN E., BHARGAVA S., BROOKS D., BURKE D.L., CARNERO ROSELL A., CARRASCO KIND M., CARRETERO J., COSTANZI M., DA COSTA L.N., DESAI S., DIEHL H.T., DIETRICH J.P., DOEL P., EVERETT S., FLAUGHER B., FOSALBA P., FRIEDEL D., FRIEMAN J., GAZTANAGA E., GERDES D.W., GRUEN D., GRUENDL R.A., GSCHWEND J., GUTIERREZ G., HINTON S.R., HOLLOWOOD D.L., HONSCHEID K., JAMES D.J., KUEHN K., KUROPATKIN N., LAHAV O., LIMA M., MAIA M.A.G., MARCH M., MARSHALL J.L., MENANTEAU F., MIQUEL R., OGANDO R.L.C., PLAZAS A.A., ROMER A.K., ROODMAN A., SANCHEZ E., SCARPINE V., SCHUBNELL M., SERRANO S., SEVILLA-NOARBE I., SMITH M., SUCHYTA E., SWANSON M.E.C., TARLE G., THOMAS D., VARGA T.N., WALKER A.R., WELLER J. (The DES Collaboration)

Abstract (from CDS):

We present the results from a search for the electromagnetic counterpart of the LIGO/Virgo event S190510g using the Dark Energy Camera (DECam). S190510g is a binary neutron star (BNS) merger candidate of moderate significance detected at a distance of 227 ± 92 Mpc and localized within an area of 31 (1166) square degrees at 50% (90%) confidence. While this event was later classified as likely nonastrophysical in nature within 30 hours of the event, our short latency search and discovery pipeline identified 11 counterpart candidates, all of which appear consistent with supernovae following offline analysis and spectroscopy by other instruments. Later reprocessing of the images enabled the recovery of six more candidates. Additionally, we implement our candidate selection procedure on simulated kilonovae and supernovae under DECam observing conditions (e.g., seeing and exposure time) with the intent of quantifying our search efficiency and making informed decisions on observing strategy for future similar events. This is the first BNS counterpart search to employ a comprehensive simulation-based efficiency study. We find that using the current follow-up strategy, there would need to be 19 events similar to S190510g for us to have a 99% chance of detecting an optical counterpart, assuming a GW170817-like kilonova. We further conclude that optimization of observing plans, which should include preference for deeper images over multiple color information, could result in up to a factor of 1.5 reduction in the total number of follow-ups needed for discovery.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Gravitational wave astronomy

Simbad objects: 13

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Number of rows : 13
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 GrW 190814 GWE 00 55.8 -27 05           ~ 433 0
2 2MASS J05483537-3559390 G 05 48 35.37192 -35 59 39.0984           ~ 1 0
3 WISEA J054914.81-355724.3 G 05 49 14.81 -35 57 24.3           ~ 1 0
4 LEDA 747631 G 05 51 02.8022898720 -27 57 19.475509140           ~ 3 0
5 WISEA J055624.41-302817.8 G 05 56 24.41 -30 28 17.8           ~ 1 0
6 2MASS J06060628-3532347 G 06 06 06.2954324664 -35 32 34.608414516           ~ 1 0
7 WISEA J060745.00-304928.7 G 06 07 45.00 -30 49 28.7           ~ 1 0
8 2MASS J06091226-3452506 G 06 09 12.2730789312 -34 52 51.043586808           ~ 1 0
9 WISEA J060914.02-350858.5 G 06 09 14.02 -35 08 58.5           ~ 1 0
10 DES J060952.47-340540.7 G 06 09 52.4784 -34 05 40.704           ~ 1 0
11 DES J061124.45-363104.4 G 06 11 24.4562 -36 31 04.494           ~ 1 0
12 NGC 4993 Sy2 13 09 47.6908761600 -23 23 02.314044636   13.34   11.92   ~ 397 0
13 GrW 170817 GWE 13 09 48.0850 -23 22 53.343           ~ 2683 0

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