2011ATel.3173....1T

Query : 2011ATel.3173....1T

2011ATel.3173....1T - The Astronomer's Telegram, 3173, 1 (2011/February-0)

INTEGRAL detection of a new outburst of A 0535+262 .

TCHERNIN C., FERRIGNO C. and BOZZO E.

Abstract (from CDS):

During the on-going calibration observations of the Crab, INTEGRAL detected the Be X-ray binary A 0535+262 during a new bright X-ray outburst (see also Atel #3166).

The observations on which this telegram is based were performed from 2011 Feb. 16 at 11:50 to 2011 Feb. 17 at 15:55 (UTC). The source is detected at an average flux of 1.5 and 0.8 Crab in the 20-40 keV and 40-80 keV energy bands, respectively.

The IBIS/ISGRI lightcurve shows a remarkable increase in the count-rate, thus suggesting that the currently on-going event is probably another giant outburst from the source.

Further INTEGRAL observations of the region around A 0535+262 are currently planned until 2011 Feb. 19. Observations with other instruments are encouraged.


Abstract Copyright: ∼

Journal keyword(s): Star - Transient

Simbad objects: 2

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Number of rows : 2
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 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
2 HD 245770 HXB 05 38 54.5748918624 +26 18 56.836952784 9.30 9.84 9.39 8.77 8.30 O9/B0III/Ve 1045 0

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