文件操作 - 1743577596.M936427P23944.mail.planetcloud-host.com,S=5190,W=5277:2,
返回文件管理
返回主菜单
删除本文件
文件: /var/vmail/bicar.it/stefano/cur/1743577596.M936427P23944.mail.planetcloud-host.com,S=5190,W=5277:2,
编辑文件内容
Return-Path: <atel@astronomerstelegram.org> Delivered-To: stefano@bicar.it Received: by mail.planetcloud-host.com (Postfix, from userid 1016) id D962B14EAA; Wed, 2 Apr 2025 09:06:36 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on mail.planetcloud-host.com X-Spam-Level: X-Spam-Status: No, score=-0.0 required=7.0 tests=RCVD_IN_DNSWL_BLOCKED, RCVD_IN_VALIDITY_RPBL_BLOCKED,RCVD_IN_VALIDITY_SAFE_BLOCKED,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=disabled version=3.4.0 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 Received: from server.astronomerstelegram.org (astronomerstelegram.org [174.142.199.243]) by mail.planetcloud-host.com (Postfix) with ESMTP id 82B7D144A8 for <stefano@bicar.it>; Wed, 2 Apr 2025 09:06:34 +0200 (CEST) Received: from server.astronomerstelegram.org (localhost [127.0.0.1]) by server.astronomerstelegram.org (Postfix) with ESMTP id 399EF28807FC for <stefano@bicar.it>; Wed, 2 Apr 2025 03:06:33 -0400 (EDT) To: stefano@bicar.it From: atel@astronomerstelegram.org Subject: ATel 17124 Message-Id: <20250402070633.399EF28807FC@server.astronomerstelegram.org> Date: Wed, 2 Apr 2025 03:06:33 -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 #17124 ATEL #17124 Title: Non-detection of repeat radio bursts from FRB 20250316A in a high-cadence observing campaign Author: O. S. Ould-Boukattine (ASTRON, UvA), R. Blaauw (ASTRON), T. Buchsteiner (Astropeiler Stockert e. V.), T. de Beer (CAMRAS), T. J. Dijkema (ASTRON, CAMRAS), E. Fischer (Astropeiler Stockert e. V.), M. Gawronski (NCU, Torun), J. W.T. Hessels (McGill, UvA, ASTRON), D. M. Hewitt (UvA), W. Herrmann (Astropeiler Stockert e. V.), F. Kirsten (Chalmers, OSO), D. Kuiper (UvA), H. P. Loege (Astropeiler Stockert e. V.), B. Marcote (JIVE), H. Mulder (ASTRON), R. A. Ovinge (CAMRAS), W. Puchalska (NCU, Torun), Z. Pleunis (UvA, ASTRON), S. Ranguin (UvA), A. Moroianu (UvA), M. P. Snelders (ASTRON, UvA), J. J. Sluman (ASTRON), M. O. Wolf (CAMRAS), J. Yang (Chalmers, OSO) and the CHIME/FRB Collaboration Queries: jason.hessels@mcgill.ca Posted: 1 Apr 2025; 19:56 UT Subjects:Radio, Transient, Fast Radio Burst FRB 20250316A is an exceptionally bright fast radio burst (FRB) discovered and localised by CHIME/FRB and its Outriggers to a nearby host galaxy, NGC 4141, at ~40 Mpc (ATel #17081, #17086, #17114). We observed FRB 20250316A at high cadence as part of the HyperFlash project, which monitors known (repeating) FRB sources using a network of 25- to 32-meter European radio telescopes. Observations are carried out on a best-effort basis and, whenever possible, the telescopes observe simultaneously at complementary wavelengths. During this campaign, we observed using telescopes at Westerbork (Netherlands), Dwingeloo (Netherlands), Stockert (Germany), Torun (Poland), and Onsala (Sweden). We previously described our observing strategy in ATel #16565 and <a href="https://ui.adsabs.harvard.edu/abs/2024NatAs...8..337K/abstract">Kirsten et al. 2024</a>. Between 16 March (MJD 60750) and 26 March 2025 (MJD 60760), we accumulated a total of 170 hours of exposure across all five telescopes. Accounting for simultaneous observations, this corresponds to 120 hours at L-band (1.4 GHz) and 20 hours at P-band (0.33 GHz). We detected no bursts above our completeness thresholds of 15 Jy ms (L-band) and 70 Jy ms (P-band), which corresponds to an emitted energy of ~10<sup>36</sup> erg assuming a burst bandwidth of 100 MHz. The absence of subsequent bursts, combined with the source's exceptional proximity, suggests that FRB 20250316A is unlikely to be a hyperactive repeater. Instead, it may emit bursts at a much lower repetition rate or lower energies. Alternatively, this source could be a non-repeating FRB. ------------------------------------------------------------------------------ Password Certification: Jason W.T. Hessels (j.w.t.hessels@uva.nl) https://www.astronomerstelegram.org/?read=17124 ============================================================================== ============================================================================== 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
修改文件时间
将文件时间修改为当前时间的前一年
删除文件