GRB230116D

This page lists all entries on GRB230116D in GRBweb

Summary IPN Swift GCN 33176 GCN 33177 GCN 33178 GCN 33179 GCN 33180 GCN 33181 GCN 33182 GCN 33185 GCN 33187 GCN 33188 GCN 33189 GCN 33190 GCN 33191 GCN 33192 GCN 33194 GCN 33198

Summary table
Variable Value Source
T0 21:04:43 UTC GCN_circulars,Swift Det
ra 98.6178° Swift
decl 49.8729° Swift
pos_error 2.59e-04° Swift
T90 41.0 s Swift
T90_start 21:04:43 UTC Swift
fluence 8.12e-07 erg/cm² Swift
redshift 3.8100
T100 41.0 s
GBM_located False
mjd 59960.878275462965 GCN_circulars,Swift Det
IPN table
GRB_name GRB230116D
ra 98.5958°
decl 49.8333°
pos_error 5.00e-02°
Swift table
GRB_name GRB230116D
t_trigger 21:04:43 UTC
ra 98.6178°
decl 49.8729°
pos_error 2.59e-04°
T90 41.0 s
fluence 8.12e-07 erg/cm²
redshift 3.8100
GCN 33176 table
GRB_name GRB230116D
GCN_number 33176
Detection_method Swift Det
t_trigger 21:04:43 UTC
ra 98.5940°
decl 49.8400°
Circular_text TITLE: GCN CIRCULAR NUMBER: 33176 SUBJECT: GRB 230116D: Swift detection of a burst DATE: 23/01/16 21:23:25 GMT FROM: David Palmer at LANL E. Sonbas (Adiyaman Univ.), R. A. J. Eyles-Ferris (U Leicester), C. Gronwall (PSU), J.D. Gropp (PSU), N. J. Klingler (GSFC/UMBC/CRESSTII), S. Laha (GSFC/UMBC), A. Y. Lien (U Tampa), K. L. Page (U Leicester), D. M. Palmer (LANL), T. Sakamoto (AGU) and M. A. Williams (PSU) report on behalf of the Neil Gehrels Swift Observatory Team: At 21:04:43 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 230116D (trigger=1149293). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 98.594, 49.840d which is RA(J2000) = 06h 34m 23s Dec(J2000) = +49d 50' 24" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). Due to a communications gap the BAT lightcurve before T+8 s is not immediately available, but the later lightcurve indicates activity out to at least T+30 s. The XRT began observing the field at 21:06:54.1 UT, 130.9 seconds after the BAT trigger. Using promptly downlinked data we find an uncatalogued X-ray source with an enhanced position: RA, Dec 98.61709, 49.87257 which is equivalent to: RA(J2000) = 06h 34m 28.10s Dec(J2000) = +49d 52' 21.3" with an uncertainty of 1.9 arcseconds (radius, 90% containment). This location is 128 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at https://www.swift.ac.uk/sper. A power-law fit to a spectrum formed from promptly downlinked event data gives a column density consistent with the Galactic value of 1.65 x 10^21 cm^-2 (Willingale et al. 2013). UVOT took a finding chart exposure of 150 seconds with the White filter starting 133 seconds after the BAT trigger. No credible afterglow candidate has been found in the initial data products. The 2.7'x2.7' sub-image covers none of the XRT error circle. The 8'x8' region for the list of sources generated on-board covers 100% of the XRT error circle. The list of sources is typically complete to about 18 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.112. Burst Advocate for this burst is E. Sonbas (edasonbas AT yahoo.com). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/)
GCN 33177 table
GRB_name GRB230116D
GCN_number 33177
Detection_method Optical
ra 98.6175°
decl 49.8723°
Circular_text TITLE: GCN CIRCULAR NUMBER: 33177 SUBJECT: GRB 230116D: Nanshan/NEXT optical afterglow detection DATE: 23/01/16 22:26:11 GMT FROM: Dong Xu at NAOC/CAS Z.P. Zhu (NAOC, HUST), D. Xu, S.Q. Jiang, S.Y. Fu, X. Liu, T.H. Lu (NAOC), X. Gao (Urumqi No.1 Senior High School), J.Z. Liu (XAO) report: We observed the field of GRB 230116B detected by Swift (Sonbas et al., GCN 33176) using the NEXT-0.6m telescope located at Nanshan, Xinjiang, China. Observations started at 21:06:37 UT on 2023-01-16, i.e., 114 s after the Swift/BAT trigger. A series of frames in the Sloan r- and z- filters were obtained. An uncatalogued and decaying optical transient is detected at the Swift/XRT position (Sonbas et al., GCN 33176) at coordinates R.A. (J2000) = 6:34:28.21 Dec. (J2000) = +49:52:20.38 with a positional uncertainty of ~0.3 arcsec and r ~ 19.1 mag at ~189 s after the BAT trigger. We thus conclude that the transient is the afterglow of the burst.
GCN 33178 table
GRB_name GRB230116D
GCN_number 33178
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 33178 SUBJECT: GRB 230116D: Sintez-Newton/CrAO optical afterglow detection DATE: 23/01/16 22:42:57 GMT FROM: Alexei Pozanenko at IKI, Moscow S. Nazarov (CrAO), A. Pozanenko (IKI), S. Belkin (IKI, HSE), N. Pankov (HSE) report on behalf of IKI GRB FuN: We observed GRB 230116D (Sonbas et al., GCN 33176) with Sintez-Newton telescope of CrAO observatory. Observation started on 2023-01-16 (UT) 21:21:41. The series consists of images with an exposure of 120 s in Clear filter. In the first images we detect an object in coordinates (J2000) 06:34:28.01 +49:52:20.35 (with uncertainties of 0.5 arcsec) which is within of the XRT error circle (Sonbas et al., GCN 33176). Preliminary photometry of the afterglow is 19.5 at (UT) 21:41:56. The photometry is based on nearby USNO-B1.0 (R2) stars. There is no object in PS1 and DSS2 catalogues at this coordinates. Therefore we suggest the object is the afterglow of GRB 230116D. Observation is continuing.
GCN 33179 table
GRB_name GRB230116D
GCN_number 33179
Detection_method Other
ra 98.6175°
decl 49.8724°
Circular_text TITLE: GCN CIRCULAR NUMBER: 33179 SUBJECT: GRB 230116D: SAO RAS observations of OT brightening DATE: 23/01/16 23:07:21 GMT FROM: Moskvitin Alexander at SAO RAS A. S. Moskvitin, O. I. Spiridonova and O. A. Maslennikova (SAO RAS), report on behalf of the GRB follow-up team. We observed the field of the GRB 230116D (Sonbas et al. GCN #33176) with the SAO RAS 1-m telescope Zeiss-1000 + CCD-photometer in Rc band. Inside the XRT error circle we detected new transient object reported by Zhu et al. (GCN #33177) and Nazarov et al. (GCN #33178) with the coordinates R.A. = 06:34:28.2 Dec. = +49:52:20.5 (+/- 0".3, J2000) and brightness R = 19.93 +/- 0.07 (T - T0 = 0.9378h), R = 19.72 +/- 0.06 (T - T0 = 1.4236h) Preliminary photometry is based on R2 magnitudes of nearby USNO-B1 stars. Further observations are ongoing and encouraged.
GCN 33180 table
GRB_name GRB230116D
GCN_number 33180
Detection_method Swift-XRT Det
ra 98.6172°
decl 49.8724°
Circular_text TITLE: GCN CIRCULAR NUMBER: 33180 SUBJECT: GRB 230116D: Enhanced Swift-XRT position DATE: 23/01/17 04:00:15 GMT FROM: Phil Evans at U of Leicester J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team. Using 1618 s of XRT Photon Counting mode data and 3 UVOT images for GRB 230116D, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 98.61719, +49.87240 which is equivalent to: RA (J2000): 06h 34m 28.13s Dec (J2000): +49d 52' 20.6" with an uncertainty of 2.3 arcsec (radius, 90% confidence). This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177). This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN 33181 table
GRB_name GRB230116D
GCN_number 33181
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 33181 SUBJECT: GRB 230116D: GIT optical follow-up DATE: 23/01/17 04:57:44 GMT FROM: Gaurav Waratkar at IIT,Bombay PGRpdiBkaXI9J2F1dG8nPlYuIFN3YWluIChJSVRCKSwgSC4gS3VtYXIgKElJ VEIpLCBLLiBBbmdhaWwgKElBTyksIFYuIEJoYWxlcmFvIChJSVRCKSwgRy4g Qy4gQW51cGFtYShJSUEpLCBTLiBCYXJ3YXkgKElJQSkgcmVwb3J0IG9uIGJl aGFsZiBvZiB0aGUgR0lUIHRlYW06PGRpdiBkaXI9ImF1dG8iPjxicj48L2Rp dj48ZGl2IGRpcj0iYXV0byI+V2Ugb2JzZXJ2ZWQgR1JCIDIzMDExNkQgZGV0 ZWN0ZWQgYnkgU3dpZnQtQkFUIChTb25iYXMgZXQgYWwuLCBHQ04gMzMxNzYp IGFuZCBvcHRpY2FsIGFmdGVyZ2xvdyBkaXNjb3ZlcmVkIGJ5IFouUC4gWmh1 IGV0IGFsLihHQ04gMzMxNzcpLCB3aXRoIDAuN20gR1JPV1RILUluZGlhIFRl bGVzY29wZSAoR0lUKS4gV2Ugc3RhcnRlZCB0aGUgb2JzZXJ2YXRpb24gYXQg MjE6Mzk6MDAgVVQgb24gMjAyMy0wMS0xNiwgaS5lLiwgMzQuMjggbWluIGFm dGVyIHRoZSBTd2lmdC9CQVQgdHJpZ2dlciBhbmQgdG9vayBtdWx0aXBsZSBl eHBvc3VyZXMgaW4gdGhlIGfigJksIHInIGFuZCBp4oCZIGZpbHRlcnMuIFdl IGNsZWFybHkgZGV0ZWN0ZWQgdGhlIGFmdGVyZ2xvdyBpbiBvdXIgc3RhY2tl ZCBpbWFnZSBhdCBSLkEuPSAwNjozNDoyOC4xMywgREVDLj0rNDk6NTI6MjAu Niwgd2l0aGluIHRoZSAyLjMgYXJjc2VjIHJhZGl1cyBjaXJjbGUgKEouUC4g T3Nib3JuZSBldCBhbC4sIEdDTiAzMzE4MCkuIFRoZSBwaG90b21ldHJpYyBy ZXN1bHRzIGZvbGxvdyBhczo8L2Rpdj48ZGl2IGRpcj0iYXV0byI+LS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLTwvZGl2PjxkaXYgZGlyPSJhdXRvIj4mbmJzcDtK RCAobWlkKSB8IFRfbWlkLVQwKGhycykgfCBFeHBvc3VyZSAoc2VjKSB8IEZp bHRlciB8IE1hZ25pdHVkZSAoQUIpIHw8L2Rpdj48ZGl2IGRpcj0iYXV0byI+ LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tLTwvZGl2PjxkaXYgZGlyPSJhdXRvIj4m bmJzcDsyNDU5OTYxLjQwMjA4MzI4IHwgMC41NyB8IDEgeCAyMCB8IHInIHwg Jmd0OzE3LjYzIHw8L2Rpdj48ZGl2IGRpcj0iYXV0byI+Jm5ic3A7MjQ1OTk2 MS40MTc2MzMzNCB8IDAuOTQgfCA4IHggMzAwIChzdGFja2VkKSB8IGfigJkg fCAyMS4wNCArLy0gMC4wNyB8PC9kaXY+PGRpdiBkaXI9ImF1dG8iPiZuYnNw OzI0NTk5NjEuNDQ3OTQxNjQgfCAxLjY3IHwgOCB4IDMwMCAoc3RhY2tlZCkg fCBy4oCZIHwgMTkuOTkgKy8tIDAuMDUgfDwvZGl2PjxkaXYgZGlyPSJhdXRv Ij4mbmJzcDsyNDU5OTYxLjQ3MjU1MTQ4IHwgMi4yNiB8IDUgeCAzMDAgKHN0 YWNrZWQpIHwgaeKAmSB8ICZndDsxOS44NCB8PC9kaXY+PGRpdiBkaXI9ImF1 dG8iPi0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS08L2Rpdj48ZGl2IGRpcj0iYXV0 byI+PGJyPjwvZGl2PjxkaXYgZGlyPSJhdXRvIj5UaGUgcmVzdWx0cyBhcmUg Y29uc2lzdGVudCB3aXRoIFMuIE5hemFyb3YgZXQgYWwuKEdDTiAjMzMxNzgp IGFuZCBBLiBTLiBNb3Nrdml0aW4gZXQgYWwuKEdDTiAjMzMxNzkpLlRoZSBt YWduaXR1ZGVzIGFyZSBjYWxpYnJhdGVkIGFnYWluc3QgUGFuU1RBUlJTIERS MSAoQ2hhbWJlcnMgZXQgYWwuLCAyMDE2KSBhbmQgbm90IGNvcnJlY3RlZCBm b3IgR2FsYWN0aWMgZXh0aW5jdGlvbi48L2Rpdj48ZGl2IGRpcj0iYXV0byI+ PGJyPjwvZGl2PjxkaXYgZGlyPSJhdXRvIj5UaGUgR1JPV1RIIEluZGlhIFRl bGVzY29wZSAoR0lUOyBLdW1hciBldCBhbC4gMjAyMikgaXMgYSA3MC1jbSB0 ZWxlc2NvcGUgd2l0aCBhIDAuNy1kZWdyZWUgZmllbGQgb2Ygdmlldywgc2V0 IHVwIGJ5IHRoZSBJbmRpYW4gSW5zdGl0dXRlIG9mIEFzdHJvcGh5c2ljcyAo SUlBKSBhbmQgdGhlIEluZGlhbiBJbnN0aXR1dGUgb2YgVGVjaG5vbG9neSBC b21iYXkgKElJVEIpIHdpdGggZnVuZGluZyBmcm9tIERTVC1TRVJCIGFuZCBJ VVNTVEYuIEl0IGlzIGxvY2F0ZWQgYXQgdGhlIEluZGlhbiBBc3Ryb25vbWlj YWwgT2JzZXJ2YXRvcnkgKEhhbmxlKSwgb3BlcmF0ZWQgYnkgSUlBLiBXZSBh Y2tub3dsZWRnZSBmdW5kaW5nIGJ5IHRoZSBJSVRCIGFsdW1uaSBiYXRjaCBv ZiAxOTk0LCB3aGljaCBwYXJ0aWFsbHkgc3VwcG9ydHMgdGhlIHRlbGVzY29w ZeKAmXMgb3BlcmF0aW9ucy4gVGVsZXNjb3BlIHRlY2huaWNhbCBkZXRhaWxz IGFyZSBhdmFpbGFibGUgYXQgaHR0cHM6Ly9zaXRlcy5nb29nbGUuY29tL3Zp ZXcvZ3Jvd3RoaW5kaWEvLjwvZGl2PjxkaXYgZGlyPSJhdXRvIj48YnI+PC9k aXY+PC9kaXY+
GCN 33182 table
GRB_name GRB230116D
GCN_number 33182
Detection_method Optical
ra 98.6172°
decl 49.8724°
Circular_text TITLE: GCN CIRCULAR NUMBER: 33182 SUBJECT: GRB 230116D: GIT optical follow-up DATE: 23/01/17 05:03:49 GMT FROM: Varun Bhalerao at Indian Inst of Tech V. Swain (IITB), H. Kumar (IITB), K. Angail (IAO), V. Bhalerao (IITB), G. C. Anupama(IIA), S. Barway (IIA) report on behalf of the GIT team: [The previous GCN was garbled up, re-posting] We observed GRB 230116D detected by Swift-BAT (Sonbas et al., GCN 33176) and optical afterglow discovered by Z.P. Zhu et al.(GCN 33177), with 0.7m GROWTH-India Telescope (GIT). We started the observation at 21:39:00 UT on 2023-01-16, i.e., 34.28 min after the Swift/BAT trigger and took multiple exposures in the g’, r' and i’ filters. We clearly detected the afterglow in our stacked image at R.A.= 06:34:28.13, DEC.=+49:52:20.6, within the 2.3 arcsec radius circle (J.P. Osborne et al., GCN 33180). The photometric results follow as: ------------------------------------------------------------------- JD (mid) | T_mid-T0(hrs) | Exposure (sec) | Filter | Magnitude (AB) | ------------------------------------------------------------------- 2459961.40208328 | 0.57 | 1 x 20 | r' | >17.63 | 2459961.41763334 | 0.94 | 8 x 300 (stacked) | g’ | 21.04 +/- 0.07 | 2459961.44794164 | 1.67 | 8 x 300 (stacked) | r’ | 19.99 +/- 0.05 | 2459961.47255148 | 2.26 | 5 x 300 (stacked) | i’ | >19.84 | ------------------------------------------------------------------- The results are consistent with S. Nazarov et al.(GCN #33178) and A. S. Moskvitin et al.(GCN #33179).The magnitudes are calibrated against PanSTARRS DR1 (Chambers et al., 2016) and not corrected for Galactic extinction. The GROWTH India Telescope (GIT; Kumar et al. 2022) is a 70-cm telescope with a 0.7-degree field of view, set up by the Indian Institute of Astrophysics (IIA) and the Indian Institute of Technology Bombay (IITB) with funding from DST-SERB and IUSSTF. It is located at the Indian Astronomical Observatory (Hanle), operated by IIA. We acknowledge funding by the IITB alumni batch of 1994, which partially supports the telescope’s operations. Telescope technical details are available at https://sites.google.com/view/growthindia/.
GCN 33185 table
GRB_name GRB230116D
GCN_number 33185
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 33185 SUBJECT: GRB 230116D: Swift-XRT refined Analysis DATE: 23/01/17 10:52:45 GMT FROM: Phil Evans at U of Leicester D.N. Burrows (PSU), J. D. Gropp (PSU), S. Dichiara (PSU), K.L. Page (U. Leicester), A.P. Beardmore (U. Leicester), P.A. Evans (U. Leicester), V. D'Elia (SSDC & INAF-OAR), B. Sbarufatti (INAF-OAB), A. D'Ai (INAF-IASFPA) and E. Sonbas report on behalf of the Swift-XRT team: We have analysed 6.7 ks of XRT data for GRB 230116D (Sonbas et al. GCN Circ. 33176), from 113 s to 40.1 ks after the BAT trigger. The data comprise 47 s in Windowed Timing (WT) mode (the first 10 s were taken while Swift was slewing) with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Osborne et al. (GCN Circ. 33180). The light curve can be modelled with a series of power-law decays. The initial decay index is alpha=1.87 (+0.28, -0.19). At T+559 s the decay flattens to an alpha of 0.72 (+0.10, -0.28) before breaking again at T+11.3 ks to a final decay with index alpha=2.4 (+2.5, -0.8). A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.75 (+0.20, -0.09). The best-fitting absorption column is consistent with the Galactic value of 1.6 x 10^21 cm^-2 (Willingale et al. 2013). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.9 x 10^-11 (4.8 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 1.6 (+/-0.5) x 10^21 cm^-2 Galactic foreground: 1.6 x 10^21 cm^-2 Excess significance: <1.6 sigma Photon index: 1.75 (+0.20, -0.09) If the light curve continues to decay with a power-law decay index of 2.4, the count rate at T+24 hours will be 5.1 x 10^-4 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 2.0 x 10^-14 (2.4 x 10^-14) erg cm^-2 s^-1. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/01149293. This circular is an official product of the Swift-XRT team.
GCN 33187 table
GRB_name GRB230116D
GCN_number 33187
Detection_method Optical
redshift 3.8100
Circular_text TITLE: GCN CIRCULAR NUMBER: 33187 SUBJECT: GRB 230116D: SAO RAS redshift DATE: 23/01/17 15:29:14 GMT FROM: Alexei Pozanenko at IKI, Moscow A. Moskvitin (SAO RAS), A. Pozanenko (IKI), A. Moiseev (SAO RAS), D. Oparin (SAO RAS), S. Belkin (IKI, HSE) report on behalf of larger collaboration: We observed the optical afterglow (Zhu et al., GCN 33177; Nazarov et al., GCN 33178; Moskvitin et al., GCN 33179; Swain et al., GCN 33182) of GRB 230116D (Sonbas et al., GCN 33176) with BTA SAO RAS telescope equipped with SCORPIO-2. Observation started on 2023-01-16 (UT) 23:31:38. Spectroscopic observations consists of 10x600 s exposures with 940@600 grizm. We detect a sharp break at 5850 AA and afterglow continuum up to 7200 AA. We interpret the sharp break due to H I. Over the continuum we identified multiple absorption features, which we interpret as due to S II, Si II, O I, C II, Si IV at a common redshift of z = 3.81.
GCN 33188 table
GRB_name GRB230116D
GCN_number 33188
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 33188 SUBJECT: GRB 230116D: LCOGT Optical Upper Limit DATE: 23/01/17 15:59:16 GMT FROM: Robert Strausbaugh at University of Minnesota R. Strausbaugh (University of Minnesota), A. Cucchiara (NASA) report on behalf of a larger collaboration: We observed the GRB 230116D (Sonbas et al., GCN 33176) field with the LCOGT 1-meter Sinistro instrument at the McDonald Observatory, TX, USA site, on January 17, from 05:24 to 05:56 UT (corresponding to 8.33 to 8.64 hours from the GRB trigger time) with the SDSS r and i filters. We performed a series of 3x300s exposures in each band. We do not detect a source in either band within the XRT enhanced error region (Osborne et al., GCN 33180). This suggests fading compared to other optical detections (Zhu et al., GCN 33177; Nazarov et al., GCN 33178; Moskvitin et al., GCN 33179; Swain et al., 33182). The following magnitudes and upper limits are calculated using the PanSTARRS catalog as reference: r > 22.2 i > 21.2 These magnitudes are not corrected for galactic extinction.
GCN 33189 table
GRB_name GRB230116D
GCN_number 33189
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 33189 SUBJECT: GRB 230116D: Sintez-Newton/CrAO optical observations DATE: 23/01/17 19:01:13 GMT FROM: Alexei Pozanenko at IKI, Moscow S. Belkin (IKI, HSE), S. Nazarov (CrAO), A. Pozanenko (IKI), N. Pankov (HSE, IKI) report on behalf of GRB IKI FuN: We observed the optical afterglow (Zhu et al., GCN 33177; Nazarov et al., GCN 33178; Moskvitin et al. GCNs 33179, 33187; Swain et al., GCN 33182) of GRB 230116D (Sonbas et al., GCN 33176) with Sintez-Newton telescope of CrAO observatory. Observation started on 2023-01-16 (UT) 21:21:41. The series consist of images with an exposure of 120 s in Clear filter. Preliminary photometry of the stacked images is following Date UT-start Exptime Filter t-T0 OT Err UL 2023-01-16 21:23:55 35*120 Clear 0.03764 19.82 0.08 22.5 2023-01-16 22:44:52 33*120 Clear 0.09245 19.97 0.16 21.9 Ref.stars USNO-B1.0 RA DEC R2 06:34:04.9708800 +49:53:05.863200 15.61 06:34:38.7820800 +49:49:22.972800 16.29 06:34:57.9967200 +49:53:01.932000 16.94 06:34:24.5268000 +49:47:49.801200 15.68
GCN 33190 table
GRB_name GRB230116D
GCN_number 33190
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 33190 SUBJECT: GRB 230116D: KGO RC-25 optical observations DATE: 23/01/17 20:01:46 GMT FROM: Alexei Pozanenko at IKI, Moscow S. Belkin (IKI, HSE), A. V. Samokhvalov (citizen scientist, Surgut), A. Pozanenko (IKI), N. Pankov (HSE, IKI) report on behalf of GRB IKI FuN: We observed the optical afterglow (Zhu et al., GCN 33177; Nazarov et al., GCN 33178; Moskvitin et al. GCNs 33179, 33187; Swain et al., GCN 33182; Belkin et al., GCN 33189) of GRB 230116D (Sonbas et al., GCN 33176) with 25cm 1/8 Ritchey-Chretien telescope of KGO observatory. Observation started on 2023-01-16 (UT) 21:21:41. The series consist of images with an exposure of 600 s in R-filter. Preliminary photometry of the stacked image is following Date UT-start Exptime Filter t-T0 OT Err UL 2023-01-16 23:36:12 11*600 R 0.16075 20.25 0.20 20.4 Ref.stars USNO-B1.0 RA DEC R2 06:34:04.9708800 +49:53:05.863200 15.61 06:34:38.7820800 +49:49:22.972800 16.29 06:34:57.9967200 +49:53:01.932000 16.94 06:34:24.5268000 +49:47:49.801200 15.68
GCN 33191 table
GRB_name GRB230116D
GCN_number 33191
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 33191 SUBJECT: GRB 230116D: SAO RAS photometry DATE: 23/01/17 21:39:47 GMT FROM: Alexei Pozanenko at IKI, Moscow S. Belkin (IKI, HSE), A. Moskvitin (SAO RAS), A. Pozanenko (IKI), A. Moiseev (SAO RAS), D. Oparin (SAO RAS), N. Pankov (HSE, IKI) report on behalf of GRB IKI FuN: We observed the optical afterglow (Zhu et al., GCN 33177; Nazarov et al., GCN 33178; Moskvitin et al. GCNs 33179, 33187; Swain et al., GCN 33182; Belkin et al., GCNs 33189, 33190) of GRB 230116D (Sonbas et al., GCN 33176) with BTA SAO RAS telescope equipped with SCORPIO-2. Observation started on 2023-01-16 (UT) 23:31:38. Photometric observations consists of r -filter acquisition imaging and g,r,i - filters after before spectroscopy (Moskvitin et al. GCN 33187). Preliminary photometry of stacked images is following Date UT-start Exptime Filter t-T0 OT Err UL 2023-01-16 23:31:48 2*20 r 0.10951 20.29 0.05 21.4 2023-01-17 01:33:17 2*90 r 0.18859 20.97 0.04 23.2 2023-01-17 01:30:43 3*120 g 0.18935 22.18 0.08 23.1 Ref.stars PanSTARRS-PS1 RA DEC g r i z 06:34:21.9567816 +49:52:11.318772 16.3946 15.7833 15.5155 15.3912 06:34:23.9012808 +49:51:55.541160 18.8105 18.2189 17.9721 17.8591 06:34:37.7805360 +49:50:45.780468 18.3294 17.6554 17.3783 17.2518 The light curve based on afterglow observations (GCNs 33177, 33178, 33179, 33187, 33188, 33182, 33189, 33190) can be found at http://grb.rssi.ru/GRB230116D/GRB230116D_lc_1.png The light curve confirms rebrightening (Moskvitin et al. GCN 33179) or plateau at 0.03 - 0.1 days and correlate with XRT LC (https://www.swift.ac.uk/xrt_curves/01149293/).
GCN 33192 table
GRB_name GRB230116D
GCN_number 33192
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 33192 SUBJECT: GRB 230116D: SAO RAS further observations DATE: 23/01/18 04:08:32 GMT FROM: Moskvitin Alexander at SAO RAS A. S. Moskvitin, O. I. Spiridonova and O. A. Maslennikova (SAO RAS), report on behalf of the GRB follow-up team. We observed the field of the GRB 230116D (Sonbas et al. GCN #33176) with the SAO RAS 1-m telescope Zeiss-1000 + CCD-photometer in Rc band on January 16/17 (21:55:22--00:36:40 UT) and 17/18 (21:42:43--23:31:38). During the first night the optical afterglow (Zhu et al., GCN #33177; Nazarov et al., GCN #33178; Moskvitin et al. GCNs #33179, #33187; Swain et al., GCN #33182; Belkin et al., GCNs #33189, #33190, #33191) was clearly detected in individual frames and shows complex behaviour. t-T0, h R_mag +/- err exp, s 0.844 19.967 +/- 0.070 300 0.948 19.888 +/- 0.068 300 1.045 19.874 +/- 0.066 300 1.138 19.818 +/- 0.063 300 1.233 19.674 +/- 0.057 300 1.332 19.595 +/- 0.051 300 1.432 19.701 +/- 0.055 300 1.526 19.668 +/- 0.056 300 1.623 19.779 +/- 0.062 300 1.717 19.764 +/- 0.063 300 1.820 19.728 +/- 0.058 300 1.924 19.626 +/- 0.055 300 2.022 19.539 +/- 0.052 300 2.130 19.709 +/- 0.064 300 2.226 19.798 +/- 0.070 300 2.346 19.870 +/- 0.078 300 2.444 19.976 +/- 0.083 300 2.644 20.021 +/- 0.086 300 2.835 20.065 +/- 0.066 2 x 300 3.041 20.032 +/- 0.063 2 x 300 3.241 20.138 +/- 0.062 2 x 300 3.441 20.223 +/- 0.075 2 x 300 We also obtained 17 x 300 images in Rc band during the second night. The OT is detected in the stacked frame with the brightness of R = 22.9 +/- 0.2 (t-T0 = 25.541h = 1.064d) which is in agreement with upper limit reported by Strausbaugh & Cucchiara (GCN #33188). Preliminary photometry is based on R2 magnitudes of nearby USNO-B1 stars.
GCN 33194 table
GRB_name GRB230116D
GCN_number 33194
Detection_method Swift-BAT Det
ra 98.5840°
decl 49.8310°
Circular_text TITLE: GCN CIRCULAR NUMBER: 33194 SUBJECT: GRB 230116D: Swift-BAT refined analysis DATE: 23/01/18 22:24:27 GMT FROM: Sibasish Laha at GSFC C. B. Markwardt (GSFC),S. D. Barthelmy (GSFC), H. A. Krimm (NSF), S. Laha (GSFC/UMBC), A. Y. Lien (U Tampa), D. M. Palmer (LANL), T. Parsotan (GSFC/UMBC),T. Sakamoto (AGU), M. Stamatikos (OSU) (i.e. the Swift-BAT team): Using the data set from T-240 to T+962 sec from the recent telemetry downlink, we report further analysis of BAT GRB 230116D (trigger #1149293) (Sonbas et al., GCN Circ. 33176). The BAT ground-calculated position is RA, Dec = 98.584, 49.831 deg which is RA(J2000) = 06h 34m 20.1s Dec(J2000) = +49d 49' 50.3" with an uncertainty of 2.9 arcmin, (radius, sys+stat, 90% containment). The partial coding was 98%. The BAT light curve showed a complex structure with a duration of about 40 sec. T90 (15-350 keV) is 41.00 +- 11.18 sec (estimated error including systematics). The time-averaged spectrum from T+1.14 to T+53.144 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.38 +- 0.22. The fluence in the 15-150 keV band is 8.12 +- 1.2 x 10^-07 erg/cm2. The 1-sec peak photon flux measured from T+12.14 sec in the 15-150 keV band is 0.6 +- 0.2 ph/cm2/sec. All the quoted errors are at the 90% confidence level. The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/1149293/BA/
GCN 33198 table
GRB_name GRB230116D
GCN_number 33198
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 33198 SUBJECT: GRB 230116D: 3.6m DOT optical upper limit DATE: 23/01/20 05:06:14 GMT FROM: Rahul Gupta at ARIES, India Rahul Gupta, Amit K. Ror, S. B. Pandey, A. Aryan, S. Pandey, A. Ghosh, Dimple, and K. Misra (ARIES) report: We observed the field of GRB 230116D detected by Swift (Sonbas et al., GCN 33176) using the 3.6m Devasthal Optical Telescope of ARIES Nainital. We have taken multiple frames having an exposure time of 300 sec in the r filter. We stacked the images after the alignment. We do not detect the optical afterglow (Zhu et al., GCN 33177; Nazarov et al., GCN 33178; Moskvitin et al., GCNs 33179, 33187, 33192; Swain et al., GCN 33182; and Belkin et al., GCNs 33189, 33190, 33191). We obtained the limiting mag of ~ 22.7 mag at ~ 1.04 days post-detection. The limiting magnitudes quoted are not corrected for the Galactic and host extinction in the direction of the burst. Photometric calibration is performed using the standard stars from the Pan-STARRS catalog. This circular may be cited. 3.6m Devasthal Optical Telescope (DOT) is the recently commissioned facility in the Northern Himalayan region of India (long:79 41 04E, lat:29 21 40N, alt:2540m) owned and operated by the Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital ( https://www.aries.res.in). Authors of this GCN circular thankfully acknowledge consistent support from the staff members to run and maintain the 3.6m DOT.