From maxiweb at maxi.riken.jp  Thu Jan 23 22:35:34 2025
From: maxiweb at maxi.riken.jp (maxiweb at maxi.riken.jp)
Date: Thu, 23 Jan 2025 22:35:34 +0900
Subject: [X-ray-star:957] X-ray burst from 1H 0918-548
Message-ID: <20250123133534.8F3996110DF4@maxi.riken.jp>

MAXI detects possible type-I X-ray burst from 1H 0918-548. (W.Iwakiri)

=====================
MAXI transient alert
2025-01-23 12:59:31 UT
=====================

[Ground Trigger ID]
ID          :  0698426180

[Count Weighted Position]
RA,Dec: (140.771, -54.684)
Galac.: (275.756,  -3.208)
Eclip.: (178.612, -63.389)

[Triggered Criteria]
S  :  10s, 30s, 1scan
H  :  1scan
L  :  30s, 1scan

[Highest Significance]
DPTC  : 1421672313
UT    : 2025/01/23 12:59:31
on    : 1scan (Low-band)
sigma : 4.9

[Observed flux]
S :     49 +-    14 mCrab
L :     88 +-    18 mCrab
M :     39 +-    24 mCrab
H :     24 +-   106 mCrab

nearby(r<5deg) object
=====================
dist  flux  (RA, Dec)        name
[deg][mCrab]  [deg]
=====================
0.65     13.4 (140.11, -55.21)  1H 0918-548,1RXS J092026.2-551224
2.89      2.1 (136.28, -53.51)  MAXI J0903-531
4.29  unknown (137.75, -50.80)  1FGL J0910.4-5044

[Sun/Moon (RA, Dec)]
Sun :  (305.738, -19.393)
Moon:  (228.233, -22.160)
age: 23.99 day

[Latitude/Longitude]
(34.01S, 162.15W)


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For more information:
 http://maxi.riken.jp/alert/novae/0698426180/0698426180.htm

About MAXI data:
 http://maxi.riken.jp/