2011ApJ...735..104K


Query : 2011ApJ...735..104K

2011ApJ...735..104K - Astrophys. J., 735, 104 (2011/July-2)

Discovery and evolution of the new black hole candidate Swift J1539.2-6227 during its 2008 outburst.

KRIMM H.A., TOMSICK J.A., MARKWARDT C.B., BROCKSOPP C., GRISE F., KAARET P. and ROMANO P.

Abstract (from CDS):

We report on the discovery by the Swift Gamma-Ray Burst Explorer of the black hole (BH) candidate Swift J1539.2-6227 and the subsequent course of an outburst beginning in 2008 November and lasting at least seven months. The source was discovered during normal observations with the Swift Burst Alert Telescope on 2008 November 25. An extended observing campaign with the Rossi X-Ray Timing Explorer and Swift provided near-daily coverage over 176 days, giving us a good opportunity to track the evolution of spectral and timing parameters with fine temporal resolution through a series of spectral states. The source was first detected in a hard state during which strong low-frequency quasi-periodic oscillations (QPOs) were detected. The QPOs persisted for about 35 days and a signature of the transition from the hard- to soft-intermediate states was seen in the timing data. The source entered a short-lived thermal state about 40 days after the start of the outburst. There were variations in spectral hardness as the source flux declined and returned to a hard state at the end of the outburst. The progression of spectral states and the nature of the timing features provide strong evidence that Swift J1539.2-6227 is a candidate BH in a low-mass X-ray binary system.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - black hole physics - X-rays: binaries

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 - 2021
#notes
1 X LMC X-3 HXB 05 38 56.6325045489 -64 05 03.321118015   17 17.2     B2.5Ve 640 0
2 X LMC X-1 HXB 05 39 38.8285930597 -69 44 35.533031148   14.8 14.5     O8(f)p 582 2
3 SWIFT J1539.2-6227 LXB 15 39 11.963 -62 28 02.30           ~ 21 0
4 V* IL Lup HXB 15 47 08.2766679321 -47 40 10.284971214     11.96     ~ 427 1
5 V* V381 Nor HXB 15 50 58.6520652623 -56 28 35.309070422   17.95 16.6     K3III 1072 0
6 V* V1033 Sco HXB 16 54 00.137 -39 50 44.90   15.20 14.2 16.14   F5IV 1759 1
7 V* V821 Ara HXB 17 02 49.3810714542 -48 47 23.163091737 16.20 16.30 15.5     ~ 1847 0
8 NAME XTE J17464-3213 LXB 17 46 15.59637 -32 14 00.8600           ~ 640 0
9 2MAXI J1753-013 LXB 17 53 28.2897263704 -01 27 06.256526637 15.30 16.73 16.46 16.15 15.64 ~ 308 0
10 V* V406 Vul HXB 18 58 41.580 +22 39 29.40 15.00 15.65 15.31     G5V-K0V 329 0
11 X Aql X-1 LXB 19 11 16.0572031521 +00 35 05.876658556           ~ 1050 1
12 Granat 1915+105 HXB 19 15 11.55576 +10 56 44.9052           ~ 2389 0
13 HD 226868 HXB 19 58 21.6758193269 +35 12 05.782512305 9.38 9.72 8.91 8.42   O9.7Iabpvar 4024 0

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2021.08.04-14:22:53

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