文件操作 - 1744787198.M687488P13349.mail.planetcloud-host.com,S=4402,W=4477:2,

文件: /var/vmail/bicar.it/stefano/cur/1744787198.M687488P13349.mail.planetcloud-host.com,S=4402,W=4477:2,

编辑文件内容

Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=174.142.199.243; helo=server.astronomerstelegram.org; envelope-from=atel@astronomerstelegram.org; receiver=stefano@bicar.it 
To: stefano@bicar.it
From: atel@astronomerstelegram.org
Subject: ATel  17147
Message-Id: <20250416070635.5F5142880848@server.astronomerstelegram.org>
Date: Wed, 16 Apr 2025 03:06:35 -0400 (EDT)

------------------------------------------------------------------------------ 
The Astronomer's Telegram is free to read, free to publish, free to
use.  Thanks to the support of our patrons, we can continue to
keep it free. https://www.patreon.com/astronomerstel
------------------------------------------------------------------------------ 
The Astronomer's Telegram                   http://www.astronomerstelegram.org 
------------------------------------------------------------------------------
Posted: Within the last 24 hours
==============================================================================
ATEL #17147							     ATEL #17147

Title:	S-CUBED Detects SXP 31.0 in Outburst for the First Time
Author:	T. M. Gaudin (PSU), J. A. Kennea (PSU), M. J. Coe (Southampton
		University, UK), P. Evans (Leicester University, UK)
Queries:	tmg6006@psu.edu
Posted:	15 Apr 2025; 16:30 UT
Subjects:X-ray, Binary, Neutron Star, Transient, Pulsar

The Be/X-ray Binary system SXP 31.0 has been detected by a Swift SMC Survey
(S-CUBED) observation for the first time since regular shallow monitoring
of the Small Magellanic Cloud first began in 2016. This detection occurred
during the observation taken at 00:45 UTC on 15 April 2025 when the source
was detected at an X-ray luminosity of 1.75 x 10^37 erg/s (~0.38 counts/sec
in the 0.3-10 keV Swift XRT band). The Enhanced Swift XRT position of the
source is RA (J2000): 01h 11m 09.51s (17.78962), Dec (J2000): -73° 16'
44.9" (-73.27915) with a 90% confidence error region of 6.3".

A bright optical source has been found inside the XRT error region for
SXP 31.0. This optical source is consistent with the position of 2MASS
J01110860-7316462, which was reported by Covino et al. (2001) to be the
optical counterpart to the X-ray source.

This source is largely a quiescent Be/X-ray Binary that exhibits quasi-periodic
oscillations at X-ray wavelengths (Kaur et al., 2007). Based on reports
of surrounding nebular emission, it has been speculated that the source
likely resides in a supernova remnant (Coe et al., 2000). The source was
not detected in a previous S-CUBED observation obtained on 11 March 2025.
The last confirmed detection for the source was its original discovery
in 1998 by RXTE (Chakrabarty et al., 1998a). Follow-up observations have
been requested from both NICER and Swift. Other follow-up observations
are encouraged at all wavelengths.

------------------------------------------------------------------------------
Password Certification: Thomas Gaudin (tmg6006@psu.edu)
https://www.astronomerstelegram.org/?read=17147
==============================================================================

==============================================================================
This is an automatically-generated notice.  You can remove yourself permanently
from receiving both the Daily Email Digest and Instant Email Notices from
The Astronomer's Telegram by following this link:
https://www.astronomerstelegram.org?unsubscribe&confirmation=a803d34e7ea924f9a4142bac00763549&address=stefano@bicar.it

文件操作 - 1744787198.M687488P13349.mail.planetcloud-host.com,S=4402,W=4477:2,

文件: /var/vmail/bicar.it/stefano/cur/1744787198.M687488P13349.mail.planetcloud-host.com,S=4402,W=4477:2,

编辑文件内容

修改文件时间

删除文件