2021NatAs...5...46A

Query : 2021NatAs...5...46A

2021NatAs...5...46A - Nature Astronomy, 5, 46-53 (2021/January-0)

Optical follow-up of the neutron star-black hole mergers S200105ae and S200115j.

ANAND S., COUGHLIN M.W., KASLIWAL M.M., BULLA M., AHUMADA T., SAGUES CARRACEDO A., ALMUALLA M., ANDREONI I., STEIN R., FOUCART F., SINGER L.P., SOLLERMAN J., BELLM E.C., BOLIN B., CABALLERO-GARCIA M.D., CASTRO-TIRADO A.J., CENKO S.B., DE K., DEKANY R.G., DUEV D.A., FEENEY M., FREMLING C., GOLDSTEIN D.A., GOLKHOU V.Z., GRAHAM M.J., GUESSOUM N., HANKINS M.J., HU Y., KONG A.K.H., KOOL E.C., KULKARNI S.R., KUMAR H., LAHER R.R., MASCI F.J., MROZ P., NISSANKE S., PORTER M., REUSCH S., RIDDLE R., ROSNET P., RUSHOLME B., SERABYN E., SANCHEZ-RAMIREZ R., RIGAULT M., SHUPE D.L., SMITH R., SOUMAGNAC M.T., WALTERS R. and VALEEV A.F.

Abstract (from CDS):

LIGO and Virgo's third observing run revealed the first neutron star-black hole (NSBH) merger candidates in gravitational waves. These events are predicted to synthesize r-process elements creating optical/near-infrared `kilonova' emission. The joint gravitational wave and electromagnetic detection of an NSBH merger could be used to constrain the equation of state of dense nuclear matter, and independently measure the local expansion rate of the Universe. Here, we present the optical follow-up and analysis of two of the only three high-significance NSBH merger candidates detected to date, S200105ae and S200115j, with the Zwicky Transient Facility. The Zwicky Transient Facility observed ∼48% of S200105ae and ∼22% of S200115j's localization probabilities, with observations sensitive to kilonovae brighter than -17.5 mag fading at 0.5 mag d-1 in the g- and r-bands; extensive searches and systematic follow-up of candidates did not yield a viable counterpart. We present state-of-the-art kilonova models tailored to NSBH systems that place constraints on the ejecta properties of these NSBH mergers. We show that with observed depths of apparent magnitude ∼22 mag, attainable in metre-class, wide-field-of-view survey instruments, strong constraints on ejecta mass are possible, with the potential to rule out low mass ratios, high black hole spins and large neutron star radii.

Abstract Copyright: ©

Journal keyword(s): Astrophysics - High Energy Astrophysical Phenomena - General Relativity and Quantum Cosmology

CDS comments: ZTF20aahakkp not identified.

Simbad objects: 34

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Number of rows : 34
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 AT 2020xz ev 01 22 38.140 -06 49 34.14           ~ 1 0
3 AT 2020aeo ev 02 59 39.074 +06 41 11.22           ~ 2 0
4 ZTF20aafqpum ev 03 06 06.513 +13 54 48.57           SN.Ia 1 0
5 AT 2020ado ev 03 36 28.551 -07 49 34.33           ~ 1 0
6 AT 2020yp ev 03 39 45.431 +27 44 05.45           ~ 1 0
7 AT 2020ads ev 03 42 07.090 -03 11 39.04           ~ 1 0
8 AT 2020yq ev 03 47 58.215 +38 26 31.83           ~ 1 0
9 AT 2020adn ev 04 20 31.252 -09 30 27.97           ~ 1 0
10 AT 2020bbk ev 05 07 55.0 +56 27 50           ~ 1 0
11 AT 2020adq ev 05 13 13.810 +05 09 56.56           ~ 1 0
12 AT 2020adk ev 05 35 36.050 +11 46 15.31           SN.Ia 1 0
13 AT 2020adi ev 06 26 01.302 +11 33 38.86           ~ 1 0
14 AT 2020adt ev 07 47 24.206 +14 42 23.80           ~ 1 0
15 AT 2020dzt ev 07 49 02.0 +12 29 26           ~ 2 0
16 AT 2020axb ev 09 32 53.472 +72 23 05.75           ~ 1 0
17 GrW 170817 GWE 13 09 48.0850 -23 22 53.343           ~ 2683 0
18 AT 2020adf CV* 13 26 41.284 +30 52 30.74           ~ 1 0
19 AT 2020adr ev 13 43 54.452 +38 25 13.83           ~ 1 0
20 ZTF20aaerxsd ev 14 00 54.267 +45 28 21.57           SN.Ia 2 0
21 AT 2020pv SN* 14 27 52.039 +33 34 09.68           SNIb 2 0
22 AT 2020dzu ev 14 36 01.0 +55 11 49           ~ 1 0
23 AT 2020adh ev 14 51 25.859 +45 20 41.19           ~ 1 0
24 AT 2020pu ev 14 52 25.863 +31 01 18.50           ~ 1 0
25 AT 2020pq ev 15 01 27.449 +20 37 23.76           SN.Ia 1 0
26 AT 2020pp ev 15 02 38.356 +16 28 21.36           SN.IIp 1 0
27 AT 2020adm ev 15 04 13.181 +27 29 04.07           ~ 1 0
28 AT 2020adl ev 15 33 24.619 +42 02 36.70           ~ 1 0
29 AT 2020ps ev 15 49 26.296 +40 49 55.00           SN.IIp 1 0
30 AT 2020abl ev 16 19 09.927 +53 45 38.13           ~ 1 0
31 AT 2020adg ev 17 57 00.419 +10 32 20.31           SN.Ia 1 0
32 AT 2020adj ev 18 23 21.442 +17 49 31.65           ~ 1 0
33 GrW 200115 GWE ~ ~           ~ 160 0
34 GrW 200105 GWE ~ ~           ~ 136 0

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