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

[vsnet-grb-info 36022] EP241101a: OHP/T193 optical observations
by GCN Circulars 03 Nov '24

03 Nov '24

TITLE: GCN CIRCULAR NUMBER: 38060 SUBJECT: EP241101a: OHP/T193 optical observations DATE: 24/11/03 13:58:27 GMT FROM: Christophe Adami at LAM <christophe.adami(a)lam.fr> C. Adami (LAM), report on behalf of a larger collaboration: We observed the field of EP241101a (Liang et al., GCN 38039; Perez-Garcia et al., GCN 38047; Lipunov et al., GCN 38049) using the T193cm telescope at Observatoire de Haute-Provence (France) equipped with the MISTRAL spectro-imager. 7 exposures were … [View More]

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[vsnet-grb-info 36021] EP241103a: Gemini optical limits
by GCN Circulars 03 Nov '24

03 Nov '24

TITLE: GCN CIRCULAR NUMBER: 38059 SUBJECT: EP241103a: Gemini optical limits DATE: 24/11/03 13:17:58 GMT FROM: Daniele B. Malesani at IMAPP / Radboud University <d.malesani(a)astro.ru.nl> J. Quirola-Vasquez (Radboud Univ.), D. B. Malesani (DAWN/NBI and Radboud Univ.), P. G. Jonker (Radboud Univ.), A. J. Levan (Radboud Univ. and Warwick Univ.), F. E. Bauer (PUC), A. Martin-Carrillo (UCD), report on behalf of a larger collaboration: We observed the location of the fast X-ray … [View More]

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[vsnet-grb-info 36017] EP241103a: EP observation update
by GCN Circulars 03 Nov '24

03 Nov '24

TITLE: GCN CIRCULAR NUMBER: 38058 SUBJECT: EP241103a: EP observation update DATE: 24/11/03 11:46:54 GMT FROM: EP Team at NAOC/CAS <ep_ta(a)bao.ac.cn> T. Zhao (NAO, CAS), Y. F. Liang (PMO, CAS), H. Y. Liu, W. D. Zhang (NAO, CAS) report on behalf of the Einstein Probe team: Based on the newly received telemetry data, we update the information of the fast X-ray transient EP241103a, initially detected by EP (Zhao et al., GCN 38051). The transient flare started at 2024-11-03T01:23:… [View More]

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[vsnet-grb-info 36010] LIGO/Virgo/KAGRA S241102br: MASTER observations and OT detection
by GCN Circulars 03 Nov '24

03 Nov '24

TITLE: GCN CIRCULAR NUMBER: 38057 SUBJECT: LIGO/Virgo/KAGRA S241102br: MASTER observations and OT detection DATE: 24/11/03 10:35:54 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov(a)xray.sai.msu.ru> P.Balanutsa, V.Lipunov, Ya.Kechin, K.Zhirkov, A.Kuznetsov, P.Balanutsa, A.Chasovnikov, O.Gress, N.Tiurina,E.Gorbovskoy, G.Antipov, D.Vlasenko, V.Senik, V.Topolev, Yu.Tselik, Siyu Wu, V.Vladimirov, D.Cheryasov, T.Pogrosheva, V.Shumkov, K.Vetrov (Lomonosov Moscow … [View More]State University, SAI,Physics Department), D.Buckley (SAAO) C.Francile, F. Podesta, C.Lopez, R. Podesta (Observatorio Astronomico Felix Aguilar OAFA), R. Rebolo (The Instituto de Astrofisica de Canarias), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez,A.Corella,L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), A. Gabovich, V.Yurkov (Blagoveschensk Educational State University), M.Gulyaev, K.Labsina (Lomonosov MSU) MASTER-Tunka robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the LVC S241102br errorbox 3180 sec after notice time and 3335 sec after trigger time at 2024-11-02 13:36:33 UT, with upper limit up to 21.5 mag. The observations began at zenith distance = 10 deg. The sun altitude is -37.1 deg. MASTER-Kislovodsk robotic telescope located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the LVC S241102br errorbox 7936 sec after notice time and 8090 sec after trigger time at 2024-11-02 14:55:48 UT, with upper limit up to 17.8 mag. Observations started at twilight. The observations began at zenith distance = 24 deg. The sun altitude is -10.4 deg. MASTER-SAAO robotic telescope located in South Africa (South African Astronomical Observatory) started inspect of the LVC S241102br errorbox 24564 sec after notice time and 24719 sec after trigger time at 2024-11-02 19:32:57 UT, with upper limit up to 17.7 mag. The observations began at zenith distance = 74 deg. The sun altitude is -28.0 deg. MASTER-Tavrida robotic telescope located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the LVC S241102br errorbox 35208 sec after notice time and 35363 sec after trigger time at 2024-11-02 22:30:21 UT, with upper limit up to 18.9 mag. The observations began at zenith distance = 46 deg. The sun altitude is -58.0 deg. MASTER-OAFA robotic telescope located in Argentina (OAFA observatory of San Juan National University) started inspect of the LVC S241102br errorbox 41867 sec after notice time and 42022 sec after trigger time at 2024-11-03 00:21:20 UT, with upper limit up to 19.4 mag. Observations started at twilight. The observations began at zenith distance = 70 deg. The sun altitude is -16.9 deg. The galactic latitude b = -15 deg., longitude l = 104 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/ligo_1.php?id=23593 MASTER-Tunka auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) new sources: 1. MASTER OT J230458.26+422347.1/AT2024aafy on 2024-11-02.57832 UT (RA, Dec) = 23h 04m 58.26s +42d 23m 47.1s on 2024-11-02.57832 UT. The OT magnitude in 'clear' filter is 17.6m (mlim= 19.0). The OT is seen in 2 images. There is no minor planet at this place. We have reference image on 2024-09-04.61126 UT with 'clear' filter 20.2m. 2.MASTER OT J225647.76+411630.3/AT2024aafw on 2024-11-02.59109 UT. at (RA, Dec) = 22h 56m 47.76s +41d 16m 30.3s on 2024-11-02.59109 UT. The OT magnitude in 'clear' filter is 18.8m (mlim = 20.2). We have reference image on 2024-06-16.73792 UT with 'clear' filter 19.9m. The nearest object is J225647.53+411629.0 in the CatWISE2020 catalog (updated version 28-Jan-2021) (Marocco+, 2021) https://vizier.cds.unistra.fr/viz-bin/VizieR?-source=II/365 This is possibly a red star against a dust cloud. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/ligo_1.php?id=23593 The received images are being compiled and processed. Observations and analysis are continued. View this GCN Circular online at https://gcn.nasa.gov/circulars/38057. --- 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 36015] LIGO/Virgo/KAGRA S241102br: EP-WXT X-ray follow-up and flux limits
by GCN Circulars 03 Nov '24

03 Nov '24

TITLE: GCN CIRCULAR NUMBER: 38056 SUBJECT: LIGO/Virgo/KAGRA S241102br: EP-WXT X-ray follow-up and flux limits DATE: 24/11/03 10:19:11 GMT FROM: EP Team at NAOC/CAS <ep_ta(a)bao.ac.cn> Q. Y. Wu (NAO, CAS), J. Mao(YNAO, CAS), Y. F. Liang (PMO, CAS), Q. C. Liu (THU), R. D. Liang, D. H. Zhao, H. N. Yang, W. Yuan (NAO, CAS) report on behalf of the Einstein Probe team: Following on the trigger of the detection of the gravitational-wave (GW) event S241102br (LVK Collaboration, GCN … [View More]38043), we carried out a target-of-opportunity observation of the GW sky region with the Wide-field X-ray telescope(WXT) on board the Einstein Probe (EP). The observation started at 2024-11-02 15:44:04 (UTC), about 3 hours after the trigger of the GW event, lasting for around 5 hours. The 90% credible region of the event was fully covered by the large field-of-view of WXT, centering at the nominal GW source position at (RA=23h00m, Dec=+40d28m). The total effective exposure time is about 8 ks within the source credible region. No new X-ray source is found in this observation. This observation sets upper limits on the 0.5-4 keV flux in the source credible region to be approximately 2.42 x 10^(-12) erg/cm^2/s (90%. C.L.). Furthermore, we derived upper limits (see the Table below) for the top 20 galaxies from the galaxy list within the 90% volume reported by Cook et al. (GCN 38044). For queries on more information about this observation and the upper limits, please contact Qinyu Wu at the EP science center (ep_ta(a)nao.cas.cn). galaxy name | ra | dec | flux upper limit (0.5-4 keV) | deg | deg | ergs/cm^2/s -------------------------------------------------------------------------------------------------- WISEAJ225919.78+394535.0 | 344.83242 | 39.75972 | 1.42E-12 WISEAJ225952.51+442917.7 | 344.96871 | 44.48825 | 1.51E-12 WISEAJ230520.33+400018.8 | 346.33458 | 40.00514 | 1.88E-12 WISEAJ230012.95+415343.7 | 345.05417 | 41.89553 | 1.86E-12 WISEAJ225938.70+415648.8 | 344.91125 | 41.94689 | 1.51E-12 WISEAJ230201.05+423126.9 | 345.50446 | 42.52411 | 1.09E-12 WISEAJ225743.15+404134.4 | 344.42971 | 40.69286 | 1.19E-12 WISEAJ225708.96+394204.3 | 344.28733 | 39.70117 | 2.25E-12 WISEAJ225745.81+373140.1 | 344.44088 | 37.52783 | 1.63E-12 WISEAJ230533.61+424929.5 | 346.39000 | 42.82489 | 1.91E-12 WISEAJ230113.12+354411.0 | 345.30462 | 35.73639 | 1.65E-12 WISEAJ230419.52+423037.8 | 346.08129 | 42.51047 | 1.07E-12 WISEAJ230200.39+415916.5 | 345.50162 | 41.98792 | 1.35E-12 WISEAJ225832.97+415012.0 | 344.63725 | 41.83658 | 1.95E-12 WISEAJ230133.36+394404.8 | 345.38892 | 39.73472 | 1.13E-12 WISEAJ230257.02+393909.0 | 345.73754 | 39.65240 | 1.99E-12 WISEAJ225902.80+411053.6 | 344.76171 | 41.18158 | 1.49E-12 WISEAJ225942.19+421403.0 | 344.92588 | 42.23417 | 1.17E-12 WISEAJ230431.87+440856.3 | 346.13275 | 44.14900 | 1.77E-12 WISEAJ230530.98+394323.1 | 346.37912 | 39.72308 | 1.73E-12 -------------------------------------------------------------------------------------------------- Launched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with onboard X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics). EP is an international collaborative mission led by the Chinese Academy of Sciences (CAS) and participated by the European Space Agency (ESA), the Max-Planck Institute for Extraterrestrial Physics (MPE) in Germany and the Centre National d’Etudes Spatiales (CNES) in France. View this GCN Circular online at https://gcn.nasa.gov/circulars/38056. --- 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 36011] GRB 241030A: Swift-UVOT observations of the optical prompt flare
by GCN Circulars 03 Nov '24

03 Nov '24

TITLE: GCN CIRCULAR NUMBER: 38055 SUBJECT: GRB 241030A: Swift-UVOT observations of the optical prompt flare DATE: 24/11/03 09:57:36 GMT FROM: Hao Zhou at Purple Mountain Observatory, CAS <haozhou(a)pmo.ac.cn> Q. L. Wang, Y. Wang, H. Wang, H. Zhou, Z. P. Jin, Y. Z. Fan (PMO) reports: Swift-UVOT began to observe the field of GRB 241030A about 83 seconds after the trigger in the event mode (Klingler et al. GCN [37956](https://gcn.nasa.gov/circulars/37956), Breeveld et al. GCN [… [View More]

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[vsnet-grb-info 36020] EP241103a: GSP optical upper limit
by GCN Circulars 03 Nov '24

03 Nov '24

TITLE: GCN CIRCULAR NUMBER: 38054 SUBJECT: EP241103a: GSP optical upper limit DATE: 24/11/03 05:49:46 GMT FROM: Wenxiong Li <liwenxiong1992(a)gmail.com> W. X. Li, S. J. Xue (NAOC), M. Andrews, J. Farah, D. A. Howell, M. Newsome, E. Padilla Gonzalez, C. McCully, and G. Terreran (Las Cumbres Observatory), on behalf of a larger collaboration, report: Following the detection of the fast X-ray transient EP241103a by the Einstein Probe (Zhao et al., GCN 38051) with the Sinistro … [View More]

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[vsnet-grb-info 36014] EP241103a: GSP optical upper limit
by GCN Circulars 03 Nov '24

03 Nov '24

TITLE: GCN CIRCULAR NUMBER: 38054 SUBJECT: EP241103a: GSP optical upper limit DATE: 24/11/03 05:49:46 GMT FROM: Wenxiong Li <liwenxiong1992(a)gmail.com> W. X. Li, S. J. Xue (NAOC), M. Andrews, J. Farah, D. A. Howell, M. Newsome, E. Padilla Gonzalez, C. McCully, and G. Terreran (Las Cumbres Observatory), on behalf of a larger collaboration, report: Following the detection of the fast X-ray transient EP241103a by the Einstein Probe (Zhao et al., GCN 38051) with the Sinistro … [View More]

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[vsnet-grb-info 36012] EP241103A: LCO optical observations
by GCN Circulars 03 Nov '24

03 Nov '24

TITLE: GCN CIRCULAR NUMBER: 38053 SUBJECT: EP241103A: LCO optical observations DATE: 24/11/03 05:03:07 GMT FROM: luca.izzo(a)inaf.it L. Izzo (INAF-OACn and DARK/NBI) and D. B. Malesani (DAWN/NBI and Radboud Univ.) report: We observed the field of the EP burst 241103A (Zhao et al., GCN #38051) with the Sinistro instrument mounted on the 1-m telescope of the LCO network, located at the MacDonald Observatory, TX, United States. Observations started on 2024 November 3rd at 03:18:17 UT (1.… [View More]

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[vsnet-grb-info 36013] EP241103a: Global MASTER-Net observations report
by GCN Circulars 03 Nov '24

03 Nov '24

TITLE: GCN CIRCULAR NUMBER: 38052 SUBJECT: EP241103a: Global MASTER-Net observations report DATE: 24/11/03 04:54:37 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov(a)xray.sai.msu.ru> V. Lipunov, V.Kornilov, E. Gorbovskoy, K. Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.Senik, D. Vlasenko, G.Antipov, D.Zimnukhov, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D. Cheryasov, Ya.Kechin, Yu.Tselik, A. Sosnovskij (Lomonosov Moscow State University, SAI, Physics … [View More]Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gress, N.M. Budnev, O.Ershova (Irkutsk State University, API), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich (Blagoveschensk Educational State University) MASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) was pointed to the EP241103a ( EP Team et al., GCN 38051) errorbox 1164 sec after notice time and 10420 sec after trigger time at 2024-11-03 04:18:17 UT, with upper limit up to 20.0 mag. The observations began at zenith distance = 51 deg. The sun altitude is -43.9 deg. The galactic latitude b = -41 deg., longitude l = 143 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2657797 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 10451 | 2024-11-03 04:18:17 | MASTER-OAFA | (01h 49m 47.29s , +18d 37m 29.9s) | C | 60 | 19.9 | 10516 | 2024-11-03 04:19:23 | MASTER-OAFA | (01h 49m 47.16s , +18d 37m 30.9s) | C | 60 | 19.9 | 10582 | 2024-11-03 04:20:29 | MASTER-OAFA | (01h 49m 47.07s , +18d 37m 31.8s) | C | 60 | 20.0 | 11101 | 2024-11-03 04:29:08 | MASTER-OAFA | (01h 49m 43.44s , +18d 38m 20.1s) | C | 60 | 19.1 | 11167 | 2024-11-03 04:30:13 | MASTER-OAFA | (01h 49m 43.33s , +18d 38m 21.1s) | C | 60 | 19.4 | 11233 | 2024-11-03 04:31:19 | MASTER-OAFA | (01h 49m 43.21s , +18d 38m 22.1s) | C | 60 | 19.6 | 11522 | 2024-11-03 04:36:09 | MASTER-OAFA | (01h 49m 46.63s , +18d 38m 18.6s) | C | 60 | 19.6 | 11588 | 2024-11-03 04:37:14 | MASTER-OAFA | (01h 49m 46.50s , +18d 38m 19.4s) | C | 60 | 19.6 | 11653 | 2024-11-03 04:38:20 | MASTER-OAFA | (01h 49m 46.39s , +18d 38m 20.2s) | C | 60 | 19.3 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. View this GCN Circular online at https://gcn.nasa.gov/circulars/38052. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L… [View Less]

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