2011A&A...525L...6G


Query : 2011A&A...525L...6G

2011A&A...525L...6G - Astronomy and Astrophysics, volume 525, L6-6 (2011/1-1)

Discovery of a peculiar dip from GX 301-2.

GOEGUES E., KREYKENBOHM I. and BELLONI T.M.

Abstract (from CDS):

We present temporal and spectral properties of a unique X-ray dip in GX 301-2 as seen with Rossi X-ray Timing Explorer in May 2010. The X-ray pulsation from the source gradually declined prior to the dip, disappears for one spin cycle during the dip, and is abruptly restored in the spin cycle immediately after the dip. Moreover, the phase-integrated spectrum of the source becomes softer before and during the dip, and it quickly hardens again following the dip. Our findings indicate that the mechanism for pulsations gradually turned off briefly, and the underlying dim and softer emission likely from the accretion column became observable in the brief absence of high-level emission due to wind accretion.

Abstract Copyright:

Journal keyword(s): X-rays: stars - pulsars: individual: GX 301-2

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 V* GP Vel HXB 09 02 06.8608812864 -40 33 16.899168060 6.85 7.37 6.87 6.31 6.05 B0.5Ia 1514 0
2 V* BP Cru HXB 12 26 37.5605188992 -62 46 13.261044684   12.482 10.803 10.304   B1Ia+ 691 0
3 V* V2116 Oph Sy* 17 32 02.1532435416 -24 44 44.129169096   20.78 18.4     M6IIIe 692 1
4 3FHL J1746.2-2852 LXB 17 44 33.09 -28 44 27.0           ~ 538 0

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