2015MNRAS.447.3960C

Query : 2015MNRAS.447.3960C

2015MNRAS.447.3960C - Mon. Not. R. Astron. Soc., 447, 3960-3972 (2015/March-2)

The QPO states of 4U 1630-47.

CHOUDHURY M., BHATT N. and BHATTACHARYYA S.

Abstract (from CDS):

Among the transient black hole binary systems, 4U 1630-47 is one of the most active sources exhibiting outbursts every few hundred days, with every outburst lasting typically around hundred days. During the 2002-2004 outburst the appearance of quasi-periodic oscillations (QPOs) coincide with the onset of anomalous state. There are two distinct QPO states: namely the single QPO state with one QPO and the twin QPO state with two QPOs not related harmonically. The spectral features of this state are corroborated by a previous outburst in 1998. The evolution of the inner disc temperature and the inner disc radius suggest the possible onset of geometrically thicker, slim disc as a possible explanation of the energy spectral features. The other possibilities involving the Comptonizing cloud also exist that may explain the anomalous state. The two different QPO states exhibit different spectral features, and we provide a possible empirical physical scenario from the observation of the evolution of the spectral features.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): accretion, accretion discs - black hole physics - stars: individual: 4U 1630-47 - X-rays: binaries - X-rays: individual: 4U 1630-47

Simbad objects: 1

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Number of rows : 1
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 X Nor X-1 LXB 16 34 01.610 -47 23 34.80           ~ 579 0

Query : 2015MNRAS.447.3960C

Basic data :
X Nor X-1 -- Low Mass X-ray Binary
Other object types: otypes_help 		X (2022MNRAS,X,...), LXB (2013ApJS), gam (INTEGRAL1,INTREF), HX? (2016ApJS), BH? (2007ApJS)
ICRS coord. (ep=J2000) : 		16 34 01.610 -47 23 34.80 (Radio) [ 300 20 0 ] C 2016A&A...587A..61C
FK4 coord. (ep=B1950 eq=1950) : 		16 30 20.569 -47 17 19.96 [ 300 20 0 ]
Gal coord. (ep=J2000) : 		336.911278 +00.250229 [ 300 20 0 ]
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Identifiers (17) :
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X Nor X-1 INTEGRAL1 27 SWIFT J1633.8-4724A [BM83] X1630-472
1A 1630-47 INTREF 704 2U 1630-47 [KRL2007b] 192
3A 1630-472 1M 1630-472 3U 1630-47
GPS 1630-473 1RXS J163403.0-472344 4U 1630-47
GX 337+00 SRGA J163401.3-472339 4U 1630-472

References (579 between 1850 and 2026) (Total 579)
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1RXS J163403.0-472344

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