//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 27097 SUBJECT: GRB 200216A: Fermi GBM Final Real-time Localization DATE: 20/02/16 09:17:39 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 09:07:25 UT on 16 Feb 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200216A (trigger 603536850.030844 / 200216380). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 318.7, Dec = 6.5 (J2000 degrees, equivalent to J2000 21h 14m, 6d 30'), with a statistical uncertainty of 11.4 degrees. The angle from the Fermi LAT boresight is 68.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200216380/quicklook/glg_skymap_all_bn200216380.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200216380/quicklook/glg_healpix_all_bn200216380.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200216380/quicklook/glg_lc_medres34_bn200216380.gif //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 27100 SUBJECT: Swift GRB200216.56: Global MASTER-Net observations report DATE: 20/02/16 13:42:11 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva, D.Kuvshinov, D. Cheryasov (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), H.Levato (Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gres, N.M. Budnev, O.Ershova (Irkutsk State University, API), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich, Yu. Sergienko (Blagoveschensk Educational State University) MASTER-Amur robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Blagoveshchensk State Pedagogical University) was pointed to the Swift GRB200216.56 (trigger No 956824,10h 41m 50.64s , +19d 27m 14.4s, R=0.05) errorbox 18 sec after notice time and 38 sec after trigger time at 2020-02-16 13:33:12 UT, with upper limit up to 17.6 mag. The observations began at zenith distance = 46 deg. The sun altitude is -43.8 deg. MASTER-Tunka robotic telescope located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the Swift GRB200216.56 errorbox 49 sec after notice time and 69 sec after trigger time at 2020-02-16 13:33:43 UT, with upper limit up to 17.2 mag. The observations began at zenith distance = 61 deg. The sun altitude is -30.3 deg. The galactic latitude b = 60 deg., longitude l = 221 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1289334 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 43 | MASTER-Amur | P/ | 10 | 17.0 | 64 | MASTER-Amur | P/ | 10 | 16.8 | 75 | MASTER-Tunka | P| | 10 | 16.2 | 90 | MASTER-Amur | P/ | 20 | 16.9 | 109 | MASTER-Tunka | P| | 20 | 16.3 | 121 | MASTER-Amur | P/ | 20 | 16.8 | 149 | MASTER-Tunka | P| | 20 | 16.3 | 157 | MASTER-Amur | P/ | 30 | 17.4 | 193 | MASTER-Tunka | P| | 30 | 16.8 | 207 | MASTER-Amur | P/ | 40 | 17.3 | 258 | MASTER-Tunka | P| | 50 | 17.2 | 264 | MASTER-Amur | P/ | 50 | 17.6 | 334 | MASTER-Amur | P/ | 60 | 17.3 | The observation and reduction will continue. The message may be cited. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 27107 SUBJECT: GRB 200216A: Swift/BAT detection and arcminute localization from GUANO DATE: 20/02/16 21:19:11 GMT FROM: Jamie A. Kennea at PSU/Swift-XRT James DeLaunay (PSU), Aaron Tohuvavohu (U Toronto), and Jamie Kennea (PSU) report: Swift/BAT did not trigger on GRB 200216A. The Fermi/GBM Flight-Position notice, distributed at T0+24 seconds, from the Fermi/GBM detected GRB 200216A (GCN. 27096) triggered the Swift Mission Operations Center operated Gamma-ray Urgent Archiver for Novel Opportunities (GUANO; Tohuvavohu et al. 2020, in prep). The GUANO is a fully autonomous, extremely low latency, spacecraft commanding pipeline designed for targeted recovery of BAT event mode data around the times of compelling astrophysical events to enable more sensitive GRB searches. Upon trigger by the Fermi notice, GUANO sent a command to the Swift Burst Alert Telescope (BAT) to save 200 seconds of BAT event-mode data from [-50,+150] seconds around the time of GRB 200216A. All the requested event mode data was delivered to the ground. In a ground analysis of the data, using the normal BAT imaging technique, we detect GRB 200216A with a SNR of 7.5. With a more sophisticated maximum likelihood analysis (DeLaunay et al., 2020 in prep.) on the event-mode data we detect GRB 200216A more confidently, with a square root of the test statistic (sqrt(TS)) of 15.4. The sqrt(TS) behaves similarly to SNR. The BAT ground-calculated position is RA, Dec = 311.4378, -11.6580 deg which is RA(J2000) = 311d 26' 16.08" Dec(J2000) = -11d 39' 28.8" with an uncertainty of 3 arcmin, (radius, sys+stat, 90% containment). The partial coding was 40%. This arcminute location is consistent with the localization region distributed by the Fermi/GBM team (GCN. 27096). No XRT or UVOT follow-up will take place due to the source's proximity to the sun (1.2 hours). We encourage follow-up from instruments capable of observing near the sun. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 27112 SUBJECT: GRB 200216A: Fermi GBM detection DATE: 20/02/17 06:01:27 GMT FROM: Stephen Lesage at Fermi-GBM Team S. Lesage, B. Mailyan, S. Poolakkil, and C. Meegan (all UAH) report on behalf of the Fermi GBM Team: "At 09:07:25.03 UT on 16 February 2020, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 200216A (trigger 603536850 / 200216380) which was also detected via Swift ground analysis (DeLaunay et al. 2020, GCN 27107) The GBM on-ground location is consistent with the Swift position. The angle from the Fermi LAT boresight at the GBM trigger time is 68 degrees. The GBM light curve consists of a single bright pulse followed by some extended emission with a duration (T90) of about 8.0 s (10-1000 keV). The time-averaged spectrum from T0-5.0 s to T0+2.5 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is 0.9 +/- 0.9 and the cutoff energy, parameterized as Epeak, is 180.0 +/- 34.0 keV The event fluence (10-1000 keV) in this time interval is (4.4 +/- 0.9)E-07 erg/cm^2. The 1-sec peak photon flux measured starting from T0-4.16 s in the 10-1000 keV band is 0.92 +/- 0.1 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog: https://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html For Fermi GBM data and info, please visit the official Fermi GBM Support Page: https://fermi.gsfc.nasa.gov/ssc/data/access/gbm/"