[vsnet-grb-info 9004] XRF 100315A: MAXI/GSC detection of a short X-ray transient
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Tue Mar 16 18:26:13 JST 2010
TITLE: GCN CIRCULAR
NUMBER: 10492
SUBJECT: XRF 100315A: MAXI/GSC detection of a short X-ray transient
DATE: 10/03/16 09:25:55 GMT
FROM: Motoko Suzuki at JAXA <suzuki.motoko at jaxa.jp>
M. Kohama, M. Suzuki (JAXA), H. Negoro, M. Nakajima (Nihon U.),
M. Matsuoka, K. Kawasaki, S. Ueno, H. Tomida, M. Ishikawa (JAXA),
M. Morii, K. Sugimori, N. Kawai (Tokyo Tech),
T. Mihara, M. Sugizaki, Y.E. Nakagawa, T. Yamamoto,
T. Saotome (RIKEN), A. Yoshida, K. Yamaoka, S. Nakahira (AGU),
H. Tsunemi, M. Kimura (Osaka U.), S. Miyoshi, H. Ozawa,
R. Ishiwata (Nihon U.), Y. Ueda, N. Isobe, S. Eguchi,
K. Hiroi (Kyoto U.), A. Daikyuji (Miyazaki U.), A. Uzawa,
T. Matsumura, Yamazaki (Chuo U.),
on behalf of the MAXI team
At the scan transit centered at UT 2010-03-15T17:13:40,
MAXI/GSC detected a short X-ray transient with two spikes lasting
about 25 seconds within the 83 seconds triangular transit
response of MAXI/GSC.
The source location is determined as
(R.A., Dec)=( 74.95 deg, -6.63 deg) = ( 4 59 48, -6 37 48) (J2000)
we obtain a rectangular error box with the following corners:
(R.A., Dec) = (+73.50 deg, -6.42 deg) = (04 54 1, -06 25 29)(J2000)
(R.A., Dec) = (+73.66 deg, -7.19 deg) = (04 54 38, -07 11 19)(J2000)
(R.A., Dec) = (+76.40 deg, -6.80 deg) = (05 05 36, -06 48 16)(J2000)
(R.A., Dec) = (+76.30 deg, -6.03 deg) = (05 05 12, -06 01 54)(J2000)
The preliminary flux (4-10 keV) of the source was more than 250 mCrab.
There was no significant detection at the transit location in the
previous and
following orbits (92 min before or after the detection) with an upper
limit of 20 mCrab. There is no known bright X-ray source at the
detected position. Follow-up observations are encouraged.
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