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To: stefano@bicar.it
From: atel@astronomerstelegram.org
Subject: ATel  17891
Message-Id: <20260715070322.254BB28807E4@server.astronomerstelegram.org>
Date: Wed, 15 Jul 2026 03:03:22 -0400 (EDT)

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Posted: Within the last 24 hours
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ATEL #17891							     ATEL #17891

Title:	Einstein Probe detection of a new X-ray outburst from LMXB
		GRS 1747-312 in Terzan 6
Author:	X. H. Tang (THU), Y. L. Hua (PMO, CAS), M. J. Liu, W. D. Zhang
		(NAO, CAS) on behalf of the Einstein Probe (EP) team
Queries:	ep_ta@bao.ac.cn
Posted:	14 Jul 2026; 09:50 UT
Subjects:X-ray, Binary, Neutron Star, Transient

We report on the detection of a new outburst in X-rays from the low-mass
X-ray binary GRS 1747-312 by the Einstein Probe (EP) mission. The recent
rise of its X-ray flux was first detected by EP-WXT at 2026-06-30 16:16:34
(UTC). Since then, the source remained bright in the X-rays with a flux
of a few times 10^-11 erg cm^-2 s^-1 in the 0.5-4 keV band. GRS 1747-312
is located in the globular cluster Terzan 6, and is known to exhibit regular
outbursts around every 6 months. EP-WXT previously detected ~month-long
outbursts in 2024 July, 2025 March, and 2025 July.

Launched on January 9, 2024, EP is a space X-ray observatory to monitor
the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook
of X-ray and Gamma-ray Astrophysics).

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