2024Sci...383..275B

Query : 2024Sci...383..275B

2024Sci...383..275B - Science, 383, 275-279 (2024/January-0)

A pulsar in a binary with a compact object in the mass gap between neutron stars and black holes.

BARR E.D., DUTTA A., FREIRE P.C.C., CADELANO M., GAUTAM T., KRAMER M., PALLANCA C., RANSOM S.M., RIDOLFI A., STAPPERS B.W., TAURIS T.M., VENKATRAMAN KRISHNAN V., WEX N., BAILES M., BEHREND J., BUCHNER S., BURGAY M., CHEN W., CHAMPION D.J., CHEN C.-H.R., CORONGIU A., GEYER M., MEN Y.P., PADMANABH P.V. and POSSENTI A.

Abstract (from CDS):

Some compact objects observed in gravitational wave events have masses in the gap between known neutron stars (NSs) and black holes (BHs). The nature of these mass gap objects is unknown, as is the formation of their host binary systems. We report pulsar timing observations made with the Karoo Array Telescope (MeerKAT) of PSR J0514-4002E, an eccentric binary millisecond pulsar in the globular cluster NGC 1851. We found a total binary mass of 3.887 ± 0.004 solar masses (M⊙), and multiwavelength observations show that the pulsar's binary companion is also a compact object. The companion's mass (2.09 to 2.71 M⊙, 95% confidence interval) is in the mass gap, indicating either a very massive NS or a low-mass BH. We propose that the companion formed in a merger between two earlier NSs.

Abstract Copyright: © 2024 American Association for the Advancement of Science. All rights reserved. AAAS is a partner of HINARI, AGORA, OARE, CHORUS, CLOCKSS, CrossRef and COUNTER.

Journal keyword(s):

Simbad objects: 16

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Number of rows : 16
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 PSR J0348+0432 Psr 03 48 43.6363173480 +04 32 11.461921260           ~ 311 2
3 PSR J0514-4002E Psr 05 14 06.68 -40 02 47.7           ~ 17 0
4 PSR J0514-4002A Psr 05 14 06.6927 -40 02 48.897           ~ 69 1
5 PSR J0514-4002D Psr 05 14 06.73 -40 02 48.2           ~ 3 0
6 NGC 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1529 0
7 PSR J0737-3039 Psr 07 37 51.248 -30 39 40.83           ~ 445 1
8 PSR J0740+6620 Psr 07 40 45.799 +66 20 33.60           ~ 395 0
9 GrW 170817 GWE 13 09 48.0850 -23 22 53.343           ~ 2683 0
10 PSR J1913+1102 Psr 19 13 29.0542 +11 02 05.741           ~ 64 0
11 PSR J1915+1606 Psr 19 15 27.99999 +16 06 27.4034     22.5     ~ 1032 1
12 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
13 PSR J2129+1209C Psr 21 30 01.2030 +12 10 38.159           ~ 215 2
14 GRB 190425 GWE ~ ~           ~ 438 0
15 GrW 200210 092254 GWE ~ ~           ~ 51 0
16 GrW 190917 GWE ~ ~           ~ 23 0

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