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

[vsnet-grb-info 34209] Fermi trigger No 736197684: Global MASTER-Net observations report
by GCN Circulars 01 May '24

01 May '24

TITLE: GCN CIRCULAR NUMBER: 36365 SUBJECT: Fermi trigger No 736197684: Global MASTER-Net observations report DATE: 24/05/01 18:16:47 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 … [View More]University, SAI, Physics 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-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB240430.81 (trigger No 736197684,13h 24m 04.80s , +01d 32m 24.0s, R=2.55) errorbox 198 sec after trigger time at 2024-04-30 19:24:38 UT, with upper limit up to 19.9 mag. The observations began at zenith distance = 44 deg. The sun altitude is -23.4 deg. MASTER-SAAO robotic telescope located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB240430.81 errorbox 1871 sec after trigger time at 2024-04-30 19:52:31 UT, with upper limit up to 19.4 mag. The observations began at zenith distance = 40 deg. The sun altitude is -49.2 deg. The galactic latitude b = 63 deg., longitude l = 322 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2440878 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 289 | 2024-04-30 19:24:38 | MASTER-Tavrida | (13h 23m 21.65s , +02d 30m 51.9s) | C | 180 | 19.4 | 469 | 2024-04-30 19:24:38 | MASTER-Tavrida | (13h 23m 21.65s , +02d 30m 51.9s) | C | 540 | 19.9 | Coadd 477 | 2024-04-30 19:27:46 | MASTER-Tavrida | (13h 23m 15.20s , +02d 30m 00.3s) | C | 180 | 19.3 | 668 | 2024-04-30 19:30:57 | MASTER-Tavrida | (13h 23m 15.93s , +02d 30m 56.4s) | C | 180 | 19.4 | 1088 | 2024-04-30 19:37:57 | MASTER-Tavrida | (13h 31m 18.88s , +03d 42m 23.5s) | C | 180 | 19.3 | 1268 | 2024-04-30 19:37:57 | MASTER-Tavrida | (13h 31m 18.88s , +03d 42m 23.4s) | C | 540 | 19.6 | Coadd 1278 | 2024-04-30 19:41:07 | MASTER-Tavrida | (13h 31m 24.17s , +03d 42m 37.3s) | C | 180 | 19.2 | 1469 | 2024-04-30 19:44:18 | MASTER-Tavrida | (13h 31m 21.48s , +03d 44m 13.4s) | C | 180 | 19.1 | 1662 | 2024-04-30 19:47:31 | MASTER-Tavrida | (13h 22m 18.52s , +01d 48m 50.7s) | C | 180 | 19.1 | 1842 | 2024-04-30 19:47:31 | MASTER-Tavrida | (13h 22m 18.51s , +01d 48m 50.7s) | C | 540 | 19.9 | Coadd 1850 | 2024-04-30 19:50:39 | MASTER-Tavrida | (13h 22m 21.59s , +01d 49m 60.0s) | C | 180 | 19.2 | 1901 | 2024-04-30 19:52:31 | MASTER-SAAO | (13h 22m 23.31s , +01d 16m 32.9s) | C | 60 | 19.2 | 1901 | 2024-04-30 19:52:31 | MASTER-SAAO | (13h 24m 12.47s , +01d 03m 30.1s) | C | 60 | 19.2 | 2039 | 2024-04-30 19:53:48 | MASTER-Tavrida | (13h 22m 15.25s , +01d 49m 21.0s) | C | 180 | 19.2 | 2023 | 2024-04-30 19:54:33 | MASTER-SAAO | (13h 22m 19.93s , +01d 17m 36.9s) | C | 60 | 19.3 | 2023 | 2024-04-30 19:54:33 | MASTER-SAAO | (13h 24m 09.11s , +01d 04m 34.4s) | C | 60 | 19.4 | 2231 | 2024-04-30 19:57:00 | MASTER-Tavrida | (13h 30m 14.68s , +01d 50m 18.5s) | C | 180 | 19.3 | 2411 | 2024-04-30 19:57:00 | MASTER-Tavrida | (13h 30m 14.67s , +01d 50m 18.5s) | C | 540 | 19.8 | Coadd 2422 | 2024-04-30 20:00:11 | MASTER-Tavrida | (13h 30m 21.66s , +01d 49m 16.4s) | C | 180 | 19.1 | 2617 | 2024-04-30 20:03:26 | MASTER-Tavrida | (13h 30m 14.91s , +01d 48m 14.5s) | C | 180 | 19.4 | 4597 | 2024-04-30 20:37:26 | MASTER-SAAO | (13h 22m 32.98s , +01d 18m 15.1s) | C | 60 | 19.3 | 4597 | 2024-04-30 20:37:26 | MASTER-SAAO | (13h 24m 23.25s , +01d 05m 15.4s) | C | 60 | 19.3 | 4676 | 2024-04-30 20:38:46 | MASTER-SAAO | (13h 22m 34.12s , +01d 19m 17.6s) | C | 60 | 19.2 | 4676 | 2024-04-30 20:38:46 | MASTER-SAAO | (13h 24m 24.37s , +01d 06m 17.8s) | C | 60 | 19.2 | 5247 | 2024-04-30 20:48:16 | MASTER-SAAO | (13h 22m 45.18s , +01d 18m 29.9s) | C | 60 | 19.2 | 5247 | 2024-04-30 20:48:16 | MASTER-SAAO | (13h 24m 35.35s , +01d 05m 29.7s) | C | 60 | 19.2 | 14756 | 2024-04-30 23:26:45 | MASTER-Tavrida | (13h 15m 02.14s , -00d 04m 57.2s) | C | 60 | 18.1 | 14901 | 2024-04-30 23:29:10 | MASTER-Tavrida | (13h 14m 58.84s , -00d 05m 07.1s) | C | 60 | 17.9 | 79004 | 2024-05-01 17:17:33 | MASTER-SAAO | (13h 24m 53.62s , +02d 59m 31.3s) | C | 60 | 18.8 | 79004 | 2024-05-01 17:17:33 | MASTER-SAAO | (13h 23m 04.43s , +03d 12m 23.3s) | C | 60 | 18.8 | 79084 | 2024-05-01 17:18:53 | MASTER-SAAO | (13h 23m 48.22s , -00d 46m 45.0s) | C | 60 | 19.0 | 79084 | 2024-05-01 17:18:53 | MASTER-SAAO | (13h 21m 58.84s , -00d 33m 54.0s) | C | 60 | 19.0 | 79163 | 2024-05-01 17:20:13 | MASTER-SAAO | (13h 08m 37.59s , +01d 06m 38.3s) | C | 60 | 19.2 | 79163 | 2024-05-01 17:20:13 | MASTER-SAAO | (13h 06m 47.92s , +01d 19m 29.2s) | C | 60 | 19.4 | 79243 | 2024-05-01 17:21:32 | MASTER-SAAO | (13h 09m 36.22s , +03d 01m 39.3s) | C | 60 | 19.1 | 79243 | 2024-05-01 17:21:32 | MASTER-SAAO | (13h 07m 46.49s , +03d 14m 30.3s) | C | 60 | 19.1 | 79323 | 2024-05-01 17:22:52 | MASTER-SAAO | (13h 26m 50.92s , +04d 54m 30.0s) | C | 60 | 18.9 | 79323 | 2024-05-01 17:22:52 | MASTER-SAAO | (13h 25m 01.37s , +05d 07m 21.5s) | C | 60 | 19.0 | 79403 | 2024-05-01 17:24:13 | MASTER-SAAO | (13h 39m 02.10s , +01d 05m 26.1s) | C | 60 | 18.9 | 79403 | 2024-05-01 17:24:13 | MASTER-SAAO | (13h 37m 12.92s , +01d 18m 17.1s) | C | 60 | 19.2 | 79563 | 2024-05-01 17:26:52 | MASTER-SAAO | (13h 24m 31.64s , -02d 40m 29.2s) | C | 60 | 19.0 | 79563 | 2024-05-01 17:26:52 | MASTER-SAAO | (13h 22m 41.80s , -02d 27m 39.4s) | C | 60 | 19.0 | 79643 | 2024-05-01 17:28:12 | MASTER-SAAO | (13h 40m 07.21s , +02d 59m 49.8s) | C | 60 | 18.7 | 79643 | 2024-05-01 17:28:12 | MASTER-SAAO | (13h 38m 17.92s , +03d 12m 41.7s) | C | 60 | 19.0 | 79723 | 2024-05-01 17:29:32 | MASTER-SAAO | (13h 39m 00.27s , -00d 46m 45.2s) | C | 60 | 19.1 | 79723 | 2024-05-01 17:29:32 | MASTER-SAAO | (13h 37m 10.83s , -00d 33m 54.3s) | C | 60 | 19.1 | 79963 | 2024-05-01 17:33:32 | MASTER-SAAO | (13h 24m 56.23s , +03d 00m 34.2s) | C | 60 | 19.0 | 79963 | 2024-05-01 17:33:32 | MASTER-SAAO | (13h 23m 06.45s , +03d 13m 25.3s) | C | 60 | 19.2 | 80043 | 2024-05-01 17:34:52 | MASTER-SAAO | (13h 23m 42.41s , -00d 48m 22.7s) | C | 60 | 19.0 | 80043 | 2024-05-01 17:34:52 | MASTER-SAAO | (13h 21m 52.46s , -00d 35m 32.1s) | C | 60 | 19.1 | 80123 | 2024-05-01 17:36:12 | MASTER-SAAO | (13h 08m 43.78s , +01d 06m 06.5s) | C | 60 | 19.1 | 80123 | 2024-05-01 17:36:12 | MASTER-SAAO | (13h 06m 53.58s , +01d 18m 57.2s) | C | 60 | 19.3 | 80202 | 2024-05-01 17:37:31 | MASTER-SAAO | (13h 09m 39.58s , +03d 01m 42.2s) | C | 60 | 19.1 | 80202 | 2024-05-01 17:37:31 | MASTER-SAAO | (13h 07m 49.33s , +03d 14m 33.4s) | C | 60 | 19.0 | 80282 | 2024-05-01 17:38:51 | MASTER-SAAO | (13h 26m 47.46s , +04d 53m 42.4s) | C | 60 | 19.1 | 80282 | 2024-05-01 17:38:51 | MASTER-SAAO | (13h 24m 57.31s , +05d 06m 34.0s) | C | 60 | 19.1 | 80363 | 2024-05-01 17:40:12 | MASTER-SAAO | (13h 39m 08.25s , +01d 07m 11.6s) | C | 60 | 19.0 | 80363 | 2024-05-01 17:40:12 | MASTER-SAAO | (13h 37m 18.45s , +01d 20m 02.8s) | C | 60 | 19.1 | 80522 | 2024-05-01 17:42:52 | MASTER-SAAO | (13h 24m 28.33s , -02d 40m 23.5s) | C | 60 | 18.8 | 80522 | 2024-05-01 17:42:52 | MASTER-SAAO | (13h 22m 37.91s , -02d 27m 32.6s) | C | 60 | 18.8 | 80603 | 2024-05-01 17:44:12 | MASTER-SAAO | (13h 40m 09.77s , +03d 00m 22.4s) | C | 60 | 18.5 | 80603 | 2024-05-01 17:44:12 | MASTER-SAAO | (13h 38m 19.88s , +03d 13m 14.1s) | C | 60 | 18.6 | 80682 | 2024-05-01 17:45:32 | MASTER-SAAO | (13h 38m 55.46s , -00d 48m 34.5s) | C | 60 | 18.7 | 80682 | 2024-05-01 17:45:32 | MASTER-SAAO | (13h 37m 05.45s , -00d 35m 43.2s) | C | 60 | 18.6 | 80922 | 2024-05-01 17:49:32 | MASTER-SAAO | (13h 24m 53.03s , +02d 59m 41.9s) | C | 60 | 18.8 | 80922 | 2024-05-01 17:49:32 | MASTER-SAAO | (13h 23m 02.75s , +03d 12m 34.1s) | C | 60 | 18.8 | 81002 | 2024-05-01 17:50:51 | MASTER-SAAO | (13h 23m 48.48s , -00d 46m 41.8s) | C | 60 | 18.5 | 81002 | 2024-05-01 17:50:51 | MASTER-SAAO | (13h 21m 58.08s , -00d 33m 50.0s) | C | 60 | 18.5 | 81082 | 2024-05-01 17:52:12 | MASTER-SAAO | (13h 08m 36.31s , +01d 06m 45.0s) | C | 60 | 18.7 | 81082 | 2024-05-01 17:52:12 | MASTER-SAAO | (13h 06m 45.67s , +01d 19m 37.2s) | C | 60 | 18.8 | 81163 | 2024-05-01 17:53:32 | MASTER-SAAO | (13h 09m 36.51s , +03d 01m 43.6s) | C | 60 | 18.5 | 81163 | 2024-05-01 17:53:32 | MASTER-SAAO | (13h 07m 45.80s , +03d 14m 35.9s) | C | 60 | 18.5 | 81242 | 2024-05-01 17:54:51 | MASTER-SAAO | (13h 26m 50.48s , +04d 54m 29.5s) | C | 60 | 18.6 | 81242 | 2024-05-01 17:54:51 | MASTER-SAAO | (13h 24m 59.82s , +05d 07m 22.0s) | C | 60 | 18.8 | 81323 | 2024-05-01 17:56:12 | MASTER-SAAO | (13h 39m 02.46s , +01d 05m 22.2s) | C | 60 | 18.6 | 81323 | 2024-05-01 17:56:12 | MASTER-SAAO | (13h 37m 12.17s , +01d 18m 14.0s) | C | 60 | 18.6 | 81482 | 2024-05-01 17:58:51 | MASTER-SAAO | (13h 24m 30.85s , -02d 40m 47.7s) | C | 60 | 18.5 | 81482 | 2024-05-01 17:58:51 | MASTER-SAAO | (13h 22m 39.89s , -02d 27m 56.2s) | C | 60 | 18.5 | 81562 | 2024-05-01 18:00:12 | MASTER-SAAO | (13h 40m 06.61s , +02d 59m 28.0s) | C | 60 | 18.3 | 81562 | 2024-05-01 18:00:12 | MASTER-SAAO | (13h 38m 16.17s , +03d 12m 19.9s) | C | 60 | 18.3 | 81652 | 2024-05-01 18:01:41 | MASTER-SAAO | (13h 39m 00.87s , -00d 46m 50.4s) | C | 60 | 18.1 | 81652 | 2024-05-01 18:01:41 | MASTER-SAAO | (13h 37m 10.31s , -00d 33m 58.8s) | C | 60 | 18.2 | 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/36365. --- 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 34208] GRB 240426A: VZLUSAT-2 detection
by GCN Circulars 01 May '24

01 May '24

TITLE: GCN CIRCULAR NUMBER: 36364 SUBJECT: GRB 240426A: VZLUSAT-2 detection DATE: 24/05/01 15:46:56 GMT FROM: Marianna Dafčíková at Masaryk University <500025(a)mail.muni.cz> M. Dafcikova, J. Ripa (Masaryk U.), A. Pal (Konkoly Observatory), N. Werner (Masaryk U.), M. Ohno (Hiroshima U.), L. Meszaros, B. Csak (Konkoly Observatory), H. Takahashi (Hiroshima U.), F. Munz , M. Topinka, F. Hroch, N. Husarikova, J.-P. Breuer (Masaryk U.), J. Hudec, J. Kapus, M. Frajt, M. Rezenov (… [View More]

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[vsnet-grb-info 34207] GRB 240425A: VZLUSAT-2 detection
by GCN Circulars 01 May '24

01 May '24

TITLE: GCN CIRCULAR NUMBER: 36363 SUBJECT: GRB 240425A: VZLUSAT-2 detection DATE: 24/05/01 15:46:34 GMT FROM: Marianna Dafčíková at Masaryk University <500025(a)mail.muni.cz> M. Dafcikova, J. Ripa (Masaryk U.), A. Pal (Konkoly Observatory), N. Werner (Masaryk U.), M. Ohno (Hiroshima U.), L. Meszaros, B. Csak (Konkoly Observatory), H. Takahashi (Hiroshima U.), F. Munz , M. Topinka, F. Hroch, N. Husarikova, J.-P. Breuer (Masaryk U.), J. Hudec, J. Kapus, M. Frajt, M. Rezenov (… [View More]

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[vsnet-grb-info 34206] MeerKAT Discovery of a Probable Radio Counterpart to EP240414a
by GCN Circulars 01 May '24

01 May '24

TITLE: GCN CIRCULAR NUMBER: 36362 SUBJECT: MeerKAT Discovery of a Probable Radio Counterpart to EP240414a DATE: 24/05/01 15:17:35 GMT FROM: Joe Bright at U of Oxford <joe.bright(a)physics.ox.ac.uk> J. Bright, F. Carotenuto (Oxford), P. G. Jonker (Radboud), R. Fender, S. Smartt (Oxford) We observed the field of the Einstein Probe discovered Fast X-ray Transient EP240414a (GCN 36091) with the MeerKAT radio telescope between UTC 20:19:25 and 21:21:48 on 23 April 2024 (including … [View More]

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[vsnet-grb-info 34205] GRB240430A: Fermi GBM Final Localization
by GCN Circulars 01 May '24

01 May '24

TITLE: GCN CIRCULAR NUMBER: 36361 SUBJECT: GRB240430A: Fermi GBM Final Localization DATE: 24/05/01 14:58:25 GMT FROM: Cuán de Barra at UCD <cuan.debarra(a)ucdconnect.ie> The Fermi GBM team reports the detection of a likely LONG GRB. At 19:21:19.72 UT on 30 Apr 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240430A (trigger 736197684 / 240430806). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 201.0, Dec = 1.5 (J2000 … [View More]

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[vsnet-grb-info 34204] GRB 240501B: AstroSat CZTI detection
by GCN Circulars 01 May '24

01 May '24

TITLE: GCN CIRCULAR NUMBER: 36360 SUBJECT: GRB 240501B: AstroSat CZTI detection DATE: 24/05/01 14:50:54 GMT FROM: Gaurav Waratkar at IIT Bombay <gauravwaratkar(a)iitb.ac.in> G. Waratkar (IITB), J. Joshi (IUCAA), A. Vibhute (IUCAA), V. Bhalerao (IITB), D. Bhattacharya (Ashoka University/IUCAA), A. R. Rao (IUCAA/TIFR), and S. Vadawale (PRL) report on behalf of the AstroSat CZTI collaboration: Analysis of AstroSat CZTI data with the CIFT framework (Sharma et al., 2021, JApA, 42, … [View More]

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[vsnet-grb-info 34203] GRB 240501A: Fermi GBM Final Real-time Localization
by GCN Circulars 01 May '24

01 May '24

TITLE: GCN CIRCULAR NUMBER: 36359 SUBJECT: GRB 240501A: Fermi GBM Final Real-time Localization DATE: 24/05/01 11:05:02 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply(a)GIOC.nsstc.nasa.gov> The Fermi GBM team reports the detection of a likely LONG GRB At 10:54:33 UT on 1 May 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240501A (trigger 736253678.962802 / 240501455). The on-ground calculated location, using the Fermi GBM trigger data, is RA = … [View More]

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[vsnet-grb-info 34202] GRB 240408B: VZLUSAT-2 detection
by GCN Circulars 01 May '24

01 May '24

TITLE: GCN CIRCULAR NUMBER: 36358 SUBJECT: GRB 240408B: VZLUSAT-2 detection DATE: 24/05/01 08:59:13 GMT FROM: Marianna Dafčíková at Masaryk University <500025(a)mail.muni.cz> M. Dafcikova, J. Ripa (Masaryk U.), A. Pal (Konkoly Observatory), N. Werner (Masaryk U.), M. Ohno (Hiroshima U.), L. Meszaros, B. Csak (Konkoly Observatory), H. Takahashi (Hiroshima U.), F. Munz , M. Topinka, F. Hroch, N. Husarikova, J.-P. Breuer (Masaryk U.), J. Hudec, J. Kapus, M. Frajt, M. Rezenov (… [View More]

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[vsnet-grb-info 34201] GRB 240407A: VZLUSAT-2 detection
by GCN Circulars 01 May '24

01 May '24

TITLE: GCN CIRCULAR NUMBER: 36357 SUBJECT: GRB 240407A: VZLUSAT-2 detection DATE: 24/05/01 08:58:40 GMT FROM: Marianna Dafčíková at Masaryk University <500025(a)mail.muni.cz> M. Dafcikova, J. Ripa (Masaryk U.), A. Pal (Konkoly Observatory), N. Werner (Masaryk U.), M. Ohno (Hiroshima U.), L. Meszaros, B. Csak (Konkoly Observatory), H. Takahashi (Hiroshima U.), F. Munz , M. Topinka, F. Hroch, N. Husarikova, J.-P. Breuer (Masaryk U.), J. Hudec, J. Kapus, M. Frajt, M. Rezenov (… [View More]

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[vsnet-grb-info 34200] LIGO/Virgo/KAGRA S240501an: Identification of a GW compact binary merger candidate
by GCN Circulars 01 May '24

01 May '24

TITLE: GCN CIRCULAR NUMBER: 36356 SUBJECT: LIGO/Virgo/KAGRA S240501an: Identification of a GW compact binary merger candidate DATE: 24/05/01 04:59:12 GMT FROM: Quynh Lan Nguyen <lnguyen3(a)nd.edu> The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report: We identified the compact binary merger candidate S240501an during real-time processing of data from LIGO Hanford Observatory (H1), LIGO Livingston Observatory (L1), and Virgo Observatory (… [View More]V1) at 2024-05-01 03:35:34.925 UTC (GPS time: 1398569752.925). The candidate was found by the CWB [1], GstLAL [2], MBTA [3], and PyCBC Live [4] analysis pipelines. S240501an is an event of interest because its false alarm rate, as estimated by the online analysis, is 4.2e-10 Hz, or about one in 75 years. The event's properties can be found at this URL: https://gracedb.ligo.org/superevents/S240501an After parameter estimation by RapidPE-RIFT [5], the classification of the GW signal, in order of descending probability, is BBH (>99%), Terrestrial (<1%), NSBH (<1%), or BNS (<1%). Assuming the candidate is astrophysical in origin, the probability that the lighter compact object is consistent with a neutron star mass (HasNS) is <1%. [6] Using the masses and spins inferred from the signal, the probability of matter outside the final compact object (HasRemnant) is <1%. [6] Both HasNS and HasRemnant consider the support of several neutron star equations of state. The probability that either of the binary components lies between 3 and 5 solar masses (HasMassGap) is <1%. Two sky maps are available at this time and can be retrieved from the GraceDB event page: * bayestar.multiorder.fits,0, an initial localization generated by BAYESTAR [7], distributed via GCN notice about 29 seconds after the candidate event time. * bayestar.multiorder.fits,1, an initial localization generated by BAYESTAR [7], distributed via GCN notice about 5 minutes after the candidate event time. The preferred sky map at this time is bayestar.multiorder.fits,1. For the bayestar.multiorder.fits,1 sky map, the 90% credible region is 1458 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 4812 +/- 1338 Mpc (a posteriori mean +/- standard deviation). For further information about analysis methodology and the contents of this alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide https://emfollow.docs.ligo.org/. [1] Klimenko et al. PRD 93, 042004 (2016) doi:10.1103/PhysRevD.93.042004 [2] Tsukada et al. PRD 108, 043004 (2023) doi:10.1103/PhysRevD.108.043004 and Ewing et al. (2023) arXiv:2305.05625 [3] Aubin et al. CQG 38, 095004 (2021) doi:10.1088/1361-6382/abe913 [4] Dal Canton et al. ApJ 923, 254 (2021) doi:10.1088/1361-6382/abe913 [5] Rose et al. (2022) arXiv:2201.05263 and Pankow et al. PRD 92, 023002 (2015) doi:10.1103/PhysRevD.92.023002 [6] Chatterjee et al. ApJ 896, 54 (2020) doi:10.3847/1538-4357/ab8dbe [7] Singer & Price PRD 93, 024013 (2016) doi:10.1103/PhysRevD.93.024013 View this GCN Circular online at https://gcn.nasa.gov/circulars/36356. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L… [View Less]

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