September 2024 - vsnet-grb-info - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-grb-info 35540] NuEm-240926A / IC240926A: BZQJ0955+4532 ~0.6m optical decay and rebrightening detection by MASTER
by GCN Circulars 27 Sep '24

27 Sep '24

TITLE: GCN CIRCULAR NUMBER: 37617 SUBJECT: NuEm-240926A / IC240926A: BZQJ0955+4532 ~0.6m optical decay and rebrightening detection by MASTER DATE: 24/09/27 10:49:56 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov(a)xray.sai.msu.ru> V.Lipunov, K.Zhirkov, D.Vlasenko, I.Panchenko, A.Kuznetsov (Lomonosov MSU), A.Sosnovskij (CrAO RAS), P.Balanutsa, G.Antipov, N.Tiurina, E.Gorbovskoy, M.Gulyaev, Ya.Kechin, V.Senik (Lomonosov MSU), O.Gress, N.Budnev(ISU), D.Buckley (… [View More]

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[vsnet-grb-info 35539] GRB 240926A: SVOM/GRM observation
by GCN Circulars 27 Sep '24

27 Sep '24

TITLE: GCN CIRCULAR NUMBER: 37616 SUBJECT: GRB 240926A: SVOM/GRM observation DATE: 24/09/27 07:55:33 GMT FROM: wenlongzhang2018(a)163.com SVOM/GRM team: Wen-Long Zhang, Yue Huang, Yan-Ting Zhang, Jia-Cong Liu, Yong-Wei Dong, Jiang-Tao Liu, Shi-Jie Zheng, Jian-Chao Sun, Wen-Jun Tan, Jiang He, Chen-Wei Wang, Min Gao, Hao-Xuan Guo, Lu Li, Yong-Ye Li, Hong-Wei Liu, Xin Liu, Hao-Li Shi, Li-Ming Song, You-Li Tuo, Hao-Xi Wang, Jin Wang, Jin-Zhou Wang, Ping Wang, Rui-Jie Wang, Yu-Xi Wang, Bo-… [View More]Bing Wu, Shao-Lin Xiong, Jian-Ying Ye, Yi-Tao Yin, Wen-Hui Yu, Fan Zhang, Li Zhang, Peng Zhang, Shuang-Nan Zhang, Shu-Min Zhao, Xiao-Yun Zhao, Chao Zheng (IHEP), Maria-Grazia Bernardini (LUPM/INAF-OAB), Laurent Bouchet (IRAP), David Corre (CEA), Tais Maiolino (LUPM), Frédéric Piron (LUPM), Stéphane Schanne (CEA), Jingwei Wang (IAP) SVOM JSWG: Jian-Yan Wei (NAOC), Bertrand Cordier (CEA), Shuang-Nan Zhang (IHEP), Stéphane Basa (LAM), JeanLuc Attéia (IRAP), Arnaud Claret (CEA), Zi-Gao Dai (USTC), Frédéric Daigne (IAP), Jin-Song Deng (NAOC), Andrea Goldwurm (APC), Diego Götz (CEA), Xu-Hui Han (NAOC), Cyril Lachaud (APC), En-Wei Liang (GXU), Yu-Lei Qiu (NAOC), Susanna Vergani (Obs.Paris), Jing Wang (NAOC), Chao Wu (NAOC), Li-Ping Xin (NAOC), Bing Zhang (UNLV) report on behalf of the SVOM team: During the commissioning phase, the SVOM/GRM was triggered in-flight by GRB 240926A (SVOM trigger reference: sb24092601) at 2024-09-26T11:42:45.000 UT (T0). The real-time alert data and light curves of SVOM/GRM were downlinked to the ground through the VHF system with low latency. The light curves show that this burst consists of multiple pulses with a T90 of 55.54 s -0.39/+0.48 s. The SVOM/GRM light curve can be found here: https://www.bursthub.cn//admin/static/svgrb240926A.png The SVOM/GRM on-ground localization of this burst is (J2000): RA: 241.92 deg DEC: 40.31 deg Error: 3.78 deg (1 sigma, statistical only) We caution that the calibration of SVOM/GRM is undergoing and this localization is subject to systematic errors. The localization may be improved in the refined analysis. At the time of the burst ECLAIRs was not in operational mode. The Space Variable Objects Monitor (SVOM) is a China-France joint mission led by the Chinese National Space Administration (CNSA, China), National Center for Space Studies (CNES, France) and the Chinese Academy of Sciences (CAS, China), which is dedicated to observing gamma-ray bursts and other transient phenomena in the energetic universe. GRM is developed by the Institute of High Energy Physics (IHEP) of CAS. The SVOM/GRM point of contact for this burst is: Wen-Long Zhang (IHEP)(zhangwl(a)ihep.ac.cn) View this GCN Circular online at https://gcn.nasa.gov/circulars/37616. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L… [View Less]

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[vsnet-grb-info 35538] EP trigger ID 01709061302: the X-ray transient is likely a stellar flare event
by GCN Circulars 27 Sep '24

27 Sep '24

TITLE: GCN CIRCULAR NUMBER: 37615 SUBJECT: EP trigger ID 01709061302: the X-ray transient is likely a stellar flare event DATE: 24/09/27 02:48:42 GMT FROM: EP Team at NAOC/CAS <ep_ta(a)bao.ac.cn> Q. C. Shui (IHEP, CAS), D. Y. Li (NAOC, CAS), C. Zhou (HUST), G. Y. Zhao (SYSU), T. C. Zheng (PMO, CAS), and W. Yuan (NAOC, CAS) on behalf of the Eintein Probe team The Follow-up X-ray Telescope (FXT) on board the Einstein Probe (EP) mission performed an autonomous observation on the X-… [View More]

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[vsnet-grb-info 35537] AMON Coincidence Alert from the sub-threshold IceCube-HAWC search NuEm-240926A
by GCN Circulars 26 Sep '24

26 Sep '24

TITLE: GCN CIRCULAR NUMBER: 37614 SUBJECT: AMON Coincidence Alert from the sub-threshold IceCube-HAWC search NuEm-240926A DATE: 24/09/26 19:34:25 GMT FROM: Hugo Ayala at Pennsylvania State University <hgayala(a)psu.edu> The AMON, IceCube, and HAWC collaborations report: The AMON NuEm stream channel found a coincidence alert from the IceCube online neutrino selection + HAWC daily monitoring analysis. The analysis looks for IceCube neutrino events -mostly atmospheric in origin- … [View More]

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[vsnet-grb-info 35536] Konus-Wind detection of GRB 240905B
by GCN Circulars 26 Sep '24

26 Sep '24

TITLE: GCN CIRCULAR NUMBER: 37613 SUBJECT: Konus-Wind detection of GRB 240905B DATE: 24/09/26 15:50:34 GMT FROM: Dmitry Svinkin at Ioffe Institute <svinkin(a)mail.ioffe.ru> D. Svinkin, D. Frederiks, M. Ulanov, A. Tsvetkova, A. Lysenko, A. Ridnaia, and T. Cline on behalf of the Konus-Wind team, report: The short-duration GRB 240905B (Fermi-GBM detection: The Fermi GBM team, GCN 37389; Dalessi et al., GCN 37436; AstroSat-CZTI detection: Joshi et al, GCN 37391; Fermi-LAT detection:… [View More]

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[vsnet-grb-info 35535] GRB 240529A: FRAM-ORM early optical afterglow observations reveal plateau and rebrightening
by GCN Circulars 26 Sep '24

26 Sep '24

TITLE: GCN CIRCULAR NUMBER: 37612 SUBJECT: GRB 240529A: FRAM-ORM early optical afterglow observations reveal plateau and rebrightening DATE: 24/09/26 15:18:39 GMT FROM: Martin Jelinek at Astro.Inst-AVCR,Ondrejov <martin.jelinek(a)asu.cas.cz> Martin Jelinek, Alzbeta Malenakova, Jan Strobl (ASU CAS Ondrejov, CZ), Sergey Karpov, Martin Masek, Petr Janecek, Jakub Jurysek, Jan Ebr, Ronan Cunniffe, Petr Travnicek and Michael Prouza (Institute of Physics, Prague, CZ) report: The 25cm … [View More]

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[vsnet-grb-info 35534] GW S240915b and S240919bn : Swift UVOT follow-up
by GCN Circulars 26 Sep '24

26 Sep '24

TITLE: GCN CIRCULAR NUMBER: 37611 SUBJECT: GW S240915b and S240919bn : Swift UVOT follow-up DATE: 24/09/26 14:41:09 GMT FROM: Alice Breeveld at MSSL-UCL <a.breeveld(a)ucl.ac.uk> A.A. Breeveld (UCL-MSSL), F.E. Marshall (NASA/GSFC), S.R. Oates (Lancaster U.), N.P.M. Kuin (UCL-MSSL), C. Gronwall (PSU), N.J. Klingler (NASA/GSFC UMBC CRESST II), M. De Pasquale (University of Messina), M.J. Page (UCL-MSSL), S. Shilling (Lancaster U.), M.H. Siegel (PSU), A. D’Aì (INAF-IASFPA), P. D’… [View More]

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[vsnet-grb-info 35533] EP240919a / GRB 240919A: SVOM/VT upper limit
by GCN Circulars 26 Sep '24

26 Sep '24

TITLE: GCN CIRCULAR NUMBER: 37610 SUBJECT: EP240919a / GRB 240919A: SVOM/VT upper limit DATE: 24/09/26 04:01:58 GMT FROM: Liping Xin at NAOC, SVOM <xlp(a)nao.cas.cn> SVOM/VT commissioning team: Y. L. Qiu, L. P. Xin, H. L. Li, C. Wu, X. H. Han, W. J. Xie, H. B. Cai, Y. Xu, Y. J. Xiao, P. P. Zhang, J. S. Deng, L. Lan, X. M. Lu, R. S. Zhang (NAOC), J. Zhang, L. J. Dan, G. Y. Zou, C. J. Wang, Y. F. Du, C. Huang (XIOPM) and Shaolin Xiong (IHEP). SVOM JSWG: Jian-Yan Wei (NAOC), … [View More]

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[vsnet-grb-info 35532] LIGO/Virgo/KAGRA S240925n: NED Galaxies in the Localization Volume
by GCN Circulars 25 Sep '24

25 Sep '24

TITLE: GCN CIRCULAR NUMBER: 37609 SUBJECT: LIGO/Virgo/KAGRA S240925n: NED Galaxies in the Localization Volume DATE: 24/09/25 15:52:55 GMT FROM: David Cook at Caltech/IPAC-NED <dcook(a)ipac.caltech.edu> David O. Cook (Caltech/IPAC), Rick Ebert (Caltech/IPAC), George Helou (Caltech/IPAC), Joseph M. Mazzarella (Caltech/IPAC), Marion Schmitz (Caltech/IPAC), and Leo Singer (NASA/GSFC) On behalf of the NASA/IPAC Extragalactic Database (NED) Team. We spatially cross-matched the LVK … [View More]S240925n-4-Update sky localization with the NED Local Volume Sample (NED-LVS; Cook et al. 2023), which is a subset of NED with a redshift or redshift-independent distance less than 1000 Mpc. We find 42329 galaxies within the 90% containment volume, and we list here the top 20 galaxies sorted by the joint probability of the 3D localization and the WISE W1 luminosity (an observable proxy for stellar mass). For the full or top 20 list of galaxies in the 90% volume go either to the NED Gravitational Wave Followup service at https://ned.ipac.caltech.edu/uri/NED::GWF/ or click on the following links: Full List Download: https://ned.ipac.caltech.edu/uri/NED::GWFglist/fits/S240925n/4 Top 20 List Download: https://ned.ipac.caltech.edu/uri/NED::GWFglist/fits/S240925n/4/20 The NED-GWF service provides downloadable galaxy lists and visualizations for candidate host galaxies. For each GW alert, these products are automatically generated and made available within minutes to expedite efficient electromagnetic follow-up observations. The NED top 20 list is sorted by the joint probability of the 3D localization and the WISE W1 luminosity, but users can sort on additional pre-computed prioritization metrics (star formation rate, P_3D * P_SFR; and specific star formation rate, P_3D * P_sSFR; etc.) which are available via downloading the entire galaxy list inside the event's probability volume. | objname| ra| dec|objtype| DistMpc|DistMpc_unc| m_NUV| m_NUV_unc| m_Ks| m_Ks_unc| m_W1| m_W1_unc| P_3D|P_3D_LumW1| |-------------------------|--------------|--------------|-------|-----------|-----------|-------|---------|------------|------------|------------|------------|--------|----------| |WISEA J062805.37-433822.4| 97.02237| -43.63942| G| 353.30| null| null| null| 13.407| 0.166| 10.531| 0.006|8.65e-07| 1.65e-10| |WISEA J082912.08+093324.3| 127.30033| 9.55669| G| 300.62| 0.10| null| null| 13.544| 0.318| 9.710| 0.006|3.75e-07| 1.11e-10| |WISEA J071238.60-372350.1| 108.16138| -37.39731| G| 390.44| null| null| null| 13.392| 0.189| 9.730| 0.006|2.07e-07| 1.08e-10| |WISEA J070803.77-354236.4| 107.01575| -35.71003| G| 328.72| null| null| null| 12.425| 0.144| 10.393| 0.006|5.43e-07| 1.07e-10| |WISEA J061819.45-434436.6| 94.58121| -43.74347| G| 370.50| 0.65| 20.752| 0.288| 11.534| 0.065| 11.355| 0.008|1.07e-06| 1.04e-10| | LCSB S1127P| 124.68167| -5.27042| G| 288.80| 0.79| 19.041| 0.091| 12.474| 0.142| 9.606| 0.006|3.23e-07| 9.65e-11| |WISEA J081327.05-104947.3| 123.36275| -10.82981| G| 334.80| null| 21.777| 0.343| 12.588| 0.130| 9.678| 0.006|2.52e-07| 9.54e-11| |WISEA J073059.04-315148.7| 112.74613| -31.86356| G| 346.09| null| null| null| 13.600| 0.199| 10.124| 0.006|3.04e-07| 8.52e-11| |WISEA J070820.06-363048.2| 107.08383| -36.51381| G| 379.19| null| null| null| 13.096| 0.187| 11.119| 0.006|6.00e-07| 8.29e-11| |WISEA J061611.50-442317.6| 94.04800| -44.38825| G| 294.82| 0.65| null| null| 12.556| 0.098| 10.622| 0.006|6.79e-07| 8.28e-11| |WISEA J060209.36-452357.6| 90.53908| -45.39936| G| 384.51| null| 19.583| 0.110| 13.598| 0.217| 11.579| 0.007|8.76e-07| 7.51e-11| |WISEA J061409.91-454035.8| 93.54125| -45.67661| G| 402.08| null| null| null| 13.766| 0.117| 10.605| 0.006|3.24e-07| 7.45e-11| |WISEA J051216.45-480857.2| 78.06850| -48.14919| G| 337.91| 0.65| null| null| 12.125| 0.095| 10.653| 0.006|4.79e-07| 7.40e-11| |WISEA J075243.04-243418.1| 118.17925| -24.57167| G| 429.53| null| null| null| 13.189| 0.220| 9.554| 0.006|9.88e-08| 7.27e-11| |WISEA J063117.86-431255.9| 97.82442| -43.21550| G| 300.09| 0.65| null| null| 12.542| 0.092| 10.771| 0.006|6.19e-07| 6.84e-11| |WISEA J055703.16-455202.4| 89.26317| -45.86731| G| 370.68| null| null| null| 13.004| 0.146| 11.788| 0.007|9.80e-07| 6.44e-11| |WISEA J080912.41-155827.8| 122.30163| -15.97442| G| 363.85| null| null| null| 13.237| 0.167| 9.611| 0.006|1.36e-07| 6.43e-11| |WISEA J061604.66-444741.9| 94.01942| -44.79497| G| 363.27| 0.65| null| null| 12.326| 0.099| 11.531| 0.006|8.01e-07| 6.41e-11| |WISEA J072410.09-335347.5| 111.04196| -33.89656| G| 367.11| null| null| null| 12.437| 0.112| 10.727| 0.007|3.60e-07| 6.35e-11| |WISEA J082326.29-051125.1| 125.85971| -5.19033| G| 265.27| null| 19.749| 0.112| 13.018| 0.169| 9.675| 0.006|2.64e-07| 6.23e-11| Table 1: Top 20 galaxies in NED-LVS that fall in the 90% probability volume for S240925n sorted by the joint probability of 3D position and WISE W1 luminosity (P_3D * P_LumW1). Galaxy is the NED preferred name. RA and Dec are the Equatorial coordinates in degrees (J2000). Objtype is the object type of the galaxy candidate. Distance is the distance to the galaxy in Mpc. m_NUV and mErr_NUV are the apparent magnitude and error from GALEX. m_Ks and mErr_Ks are the apparent magnitude and error from 2MASS. m_W1 and mErr_W1 are the apparent magnitude and error from AllWISE. P_3D is the probability that the galaxy is in the volume given the distance of GW event. P_3D_LumW1 is the joint probability within the volume weighted by the WISE1 luminosity of the galaxy (P_3D * P_LumW1). View this GCN Circular online at https://gcn.nasa.gov/circulars/37609. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L… [View Less]

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[vsnet-grb-info 35531] EP240918b and EP240918c: EP-FXT follow-up observations
by GCN Circulars 25 Sep '24

25 Sep '24

TITLE: GCN CIRCULAR NUMBER: 37608 SUBJECT: EP240918b and EP240918c: EP-FXT follow-up observations DATE: 24/09/25 11:33:40 GMT FROM: EP Team at NAOC/CAS <ep_ta(a)bao.ac.cn> M. J. Liu (NAOC ,CAS), Y. F. Liang (PMO, CAS), Z. J. Zhang (HKU), X. P. Xu, C. C. Jin, Z. X. Ling, W. M. Yuan, Y. Liu, C. Zhang, W. Chen, H. Q. Cheng, C. Z. Cui, D. W. Fan, H. B. Hu, J. W. Hu, M. H. Huang, D. Y. Li, H. Y. Liu, Z. Z. Lv, T. Y. Lian, X. Mao, H. W. Pan, X. Pan, H. Sun, W. X. Wang, Y. L. Wang, Y. … [View More]

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vsnet-grb-info September 2024