SIMBAD references

2011ATel.3316....1N - The Astronomer's Telegram, 3316, 1 (2011/April-0)

MAXI/GSC detection of a short X-ray transient MAXI J1631-639.

NEGORO H., YAMAOKA K., NAKAHIRA S., NAKAJIMA M., SUWA F., MIHARA T., SUGIZAKI M., SERINO M., YAMAMOTO T., SOOTOME T., MATSUOKA M., UENO S., TOMIDA H., KOHAMA M., ISHIKAWA M., KAWAI N., MORII M., SUGIMORI K., USUI R., TOIZUMI T., YOSHIDA A., TSUNEMI H., KIMURA M., KITAYAMA H., UEDA Y., HIROI K., SHIDATSU M., TSUBOI Y., MATSUMURA T. and YAMAZAKI K.

Abstract (from CDS):

At 2011-04-29 16:12:38 UT (= MJD 55680.6754), the MAXI/GSC alert system

triggered an X-ray transient during one scan transit located at:

(R.A., Dec) = (+247.83 deg, -63.95 deg) = (16 31 19.2, -63 57 00) (J2000)

with a systematic uncertainty of 0.2 deg. The flux was 122 ± 15 mCrab in 2-20 keV. There is no known bright X-ray source in the error circle. The GSC spectrum

in the 2-20 keV range is roughly explained by a power law with the photon index of about 1.7.

No significant emission was detected during the following three scan transits on 17:44, 19:15, and 20:47 (UT). The source is maybe a short-lived X-ray transient such as gamma-ray burst

and X-ray burst. We tentatively refer this transient as MAXI J1631-639.

Follow-up observations are strongly encouraged.


Abstract Copyright: ∼

Journal keyword(s): Transient

Simbad objects: 1

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