Showing results 1 to 12 out of 12
AstroNote 2025-107
Type: Object/s-Discovery/Classification
Released: 2025-04-05 15:35:05
BlackGEM discovery of a young transient in the outskirts of Centaurus A
P.J. Groot (Radboud/UCT/SAAO), F. Stoppa (Oxford), M. Mlangeni (UCT), H. Tranin (Barcelona), J. van Roestel (UvA), E. Z…
Source Group: BlackGEM
Keywords: Surveys, Optical, Transient, Nova, Supernova, Time-domain, Photometry
Related Objects:
2025guz [BGEM J132554.96-430603.3]
RA, DEC:13:25:54.962, -43:06:03.39
(201.479008, -43.100942)
Redshift:
Type:
See object 2025guz [BGEM J132554.96-430603.3]
The BlackGEM Consortium announces the discovery of BGEM J132554.96-430603.3 / AT2025guz, a young (1 day limit), faint (q=20.15) transient located in the outskirts of the nearby giant elliptical galax…
AstroNote 2025-101
Type: Object/s-Discovery/Classification
Released: 2025-03-27 21:56:27
NOT spectroscopic classifications of optical transients discovered/co-discovered by the BlackGEM survey
Nadejda Blagorodnova (ICCUB), David Jones (IAC), Gerard García Moreno (ICCUB), Erez A. Zimmerman (WIS), Moses Mlange…
Source Group: BlackGEM
Related Objects:
2025etc [ATLAS25daj]
RA, DEC:11:16:35.678, -03:41:50.09
(169.148658, -3.697247)
Redshift:0.095
Type:SN Ia
See object 2025etc [ATLAS25daj]
,
2025alg [ATLAS25bdp]
RA, DEC:13:11:46.381, -14:10:41.36
(197.943254, -14.178156)
Redshift:0.04
Type:SN II
See object 2025alg [ATLAS25bdp]
,
2025dcd [ATLAS25cgr]
RA, DEC:12:12:07.397, +23:57:28.82
(183.030821, 23.958006)
Redshift:0.064
Type:SN Ia
See object 2025dcd [ATLAS25cgr]
,
2025ddc [ATLAS25chu]
RA, DEC:12:09:05.668, +15:52:10.85
(182.273617, 15.869681)
Redshift:0.07
Type:SN Ic-BL
See object 2025ddc [ATLAS25chu]
,
2025dht [BGEM J110701.75+035738.4]
RA, DEC:11:07:01.750, +03:57:38.49
(166.757292, 3.960692)
Redshift:0.0613
Type:SN IIn
See object 2025dht [BGEM J110701.75+035738.4]
,
2025err [ATLAS25csk]
RA, DEC:08:19:35.291, +21:02:44.43
(124.897046, 21.045675)
Redshift:0.1
Type:SN Ia
See object 2025err [ATLAS25csk]
,
2025fdq [ZTF25aajygin]
RA, DEC:13:41:00.427, +39:03:29.44
(205.251780, 39.058177)
Redshift:0.02
Type:SN II
See object 2025fdq [ZTF25aajygin]
,
2025feb [ZTF25aajmuaa]
RA, DEC:13:55:13.092, +05:26:22.46
(208.804550, 5.439572)
Redshift:0.094
Type:SN Ia
See object 2025feb [ZTF25aajmuaa]
Related Notes:
2022-191
2025-1012022-08-15 12:08:04
Title: The Next Generation SuperFit (NGSF) tool is now available for online execution on WISeREP
Authors: Samantha Goldwasser, Ofer Yaron, Avner Sass, Ido Irani, Avi…
We report the spectroscopic classification with NOT/ALFOSC of optical transients, including a broad-line SN Ic and a SN IIn.
AstroNote 2025-42
Type: Object/s-Discovery/Classification
Released: 2025-01-29 18:36:55
BlackGEM discovery of AT2025ajq in the outskirts of Centaurus A / NGC 5128
J. Paice (Durham), H. Tranin (Barcelona), P. Groot (Radboud/SAAO/UCT), P.M. Vreeswijk (Radboud), S. Bloemen (Radboud), …
Source Group: BlackGEM
Keywords: Surveys, Time-domain, Photometry, Transient, Optical
Related Objects:
2025ajq [BGEM J132531.65-425836.6]
RA, DEC:13:25:31.656, -42:58:36.66
(201.381900, -42.976850)
Redshift:
Type:
See object 2025ajq [BGEM J132531.65-425836.6]
The BlackGEM Consortium notes that the recently discovered AT2025ajq is located in the outskirts of the giant elliptical galaxy Centaurus A / NGC 5128
AstroNote 2025-27
Type: Object/s-Discovery/Classification
Released: 2025-01-22 18:27:15
BlackGEM discovery of a possible young supernova in NGC 1398 at 24.8 Mpc: AT2025zi
P.J. Groot (Radboud/UCT/SAAO), S. deWet (DTU), H. Tranin (ICCUB), J. van Roestel (UvA), G. Leloudas (DTU), E. Zimmerman…
Source Group: BlackGEM
Keywords: Transient, Supernova, Optical
Related Objects:
2025zi [BGEM J033854.58-262214.6]
RA, DEC:03:38:54.595, -26:22:14.22
(54.727480, -26.370617)
Redshift:0.0046
Type:SN Iax[02cx-like]
See object 2025zi [BGEM J033854.58-262214.6]
BlackGEM discovery of possible young supernova in NGC 1398 with a 1.96 day explosion constraint.
AstroNote 2025-24
Type: Object/s-Discovery/Classification
Released: 2025-01-16 15:15:52
Classification of the second outburst of AT2024xuo as a likely interacting IIn supernova
N. Blagorodnova (ICCUB), Simon de Wet (DTU), Hugo Tranin (ICCUB), Giorgos Leloudas (DTU), Erez Zimmerman (Weizmann), Ga…
Source Group: BlackGEM
Keywords: Supernova, Transient, Optical
Related Objects:
2024xuo
RA, DEC:10:08:49.736, -67:02:50.70
(152.207233, -67.047417)
Redshift:0.0047
Type:SN IIn
See object 2024xuo
Related Notes:
2024-291
2025-242024-10-11 15:27:10
Title: ATLAS24pgn (AT2024xuo): discovery of a candidate SN in IC 2554 (26 Mpc)
Authors: K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulto…
Source Group: ATLAS
,
2024-297
2025-242024-10-14 10:52:00
Title: ePESSTO+ spectroscopic classification of optical transients
Authors: T. Kravtsov, C. Humina, N. Koivisto, C. Vassallo, N. Pyykki…
Source Group: ePESSTO+
We report the classification of the most recent outburst of AT2024xuo as a likely interacting SNIIn.
AstroNote 2024-381
Type: Object/s-Discovery/Classification
Released: 2024-12-23 14:07:10
Discovery of BGEM J132515.39-425833.7 / AT 2024aeql : Nova or early SN in Centaurus A / NGC5128
Simo Scaringi (Durham), Gavin Ramsay (Armagh), Hugo Tranin (Barcelona), Jan van Roestel (Amsterdam), Paul Groot (Radbou…
Source Group: BlackGEM
Keywords: Time-domain, Surveys, Photometry, Transient, Optical, Nova, Supernova
Related Objects:
2024aeql
RA, DEC:13:25:15.395, -42:58:33.75
(201.314146, -42.976042)
Redshift:0.002
Type:Nova
See object 2024aeql
BGEM J132515.39-425833.7 / AT2024aeql was recently discovered by the BlackGEM and GOTO telescope arrays at q/L =18.5. The object is located ~2' NW of the core of Centaurus A / NGC 5128, at a distance…
AstroNote 2024-376
Type: Announcement-Tool/Utility
Released: 2024-12-17 18:14:31
BlackGEM Finder Charts with Transient Reports
P.J. Groot (Radboud/UCT/SAAO), P.M. Vreeswijk (Radboud), S. Bloemen (Radboud), H. Tranin (Barcelona), J. van Roestel (U…
Source Group: BlackGEM
Keywords: Time-domain, Surveys, Photometry
BlackGEM Transient Reports come standard with finder charts
AstroNote 2024-342
Type: Object/s-Discovery/Classification
Released: 2024-11-16 22:32:37
Lesedi/Mookodi classification of AT2024abfo as a young Type II supernova in NGC 1493
Simon de Wet, Erez Zimmerman, Nicolas Erasmus
Source Group: BlackGEM
Keywords: Supernova
Related Objects:
2024abfo
RA, DEC:03:57:25.622, -46:11:07.67
(59.356757, -46.185463)
Redshift:
Type:SN II
See object 2024abfo
Related Notes:
2024-341
2024-3422024-11-16 13:35:07
Title: ATLAS24qew (AT2024abfo): discovery of a young candidate SN in NGC 1493 (11 Mpc)
Authors: K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulto…
Source Group: ATLAS
We classify AT2024abfo as a young Type II supernova in NGC 1493 at 11 Mpc.
AstroNote 2024-255
Type: Object/s-Discovery/Classification
Released: 2024-09-14 10:56:12
BlackGEM and MeerLICHT discovery of possible young supernova in NGC6744 at 7 Mpc: AT2024vjm
P.J. Groot (Radboud/UCT/SAAO), H. Tranin (Barcelona), J. van Roestel (UvA), E. Zimmerman (Weizmann), S. Faris (TelAviv)…
Source Group: BlackGEM
Keywords: Transient, Supernova, Optical
Related Objects:
2024vjm [BGEM J190925.80-635001.7]
RA, DEC:19:09:25.780, -63:50:01.75
(287.357417, -63.833819)
Redshift:0.0028
Type:SN Iax[02cx-like]
See object 2024vjm [BGEM J190925.80-635001.7]
BlackGEM and MeerLICHT discovery of possible very young transient/supernova AT2024vjm at q_AB=18.82 in NGC6744 at 7 Mpc, with 18hrs non-detection window.
AstroNote 2024-75
Type: Object/s-Discovery/Classification
Released: 2024-03-14 17:16:35
BGEM J191145.30-570804.0 (AT2024egc): discovery of a supernova candidate in ESO 184-25 (44Mpc)
Hugo Tranin, Nadia Blagorodnova (ICCUB), Fiorenzo Stoppa, Danielle Pieterse, Paul Groot, Paul Vreeswijk (Radboud Univer…
Source Group: BlackGEM
Keywords: Optical, Time-domain, Supernova
Related Objects:
2024egc [BGEM J191145.30-570804.0]
RA, DEC:19:11:45.308, -57:08:04.06
(287.938783, -57.134461)
Redshift:0.01014
Type:SN IIn
See object 2024egc [BGEM J191145.30-570804.0]
Here we report the BlackGEM discovery of the transient BGEM J191145.30-570804.0 (AT2024egc) in the galaxy ESO 184-25 at magnitude m_q = 17.39 +/- 0.02. At a distance of 44 Mpc, the transient was disc…
AstroNote 2024-63
Type: Object/s-Discovery/Classification
Released: 2024-03-06 13:04:01
Classification of AT2024diq as a flash ionized Type II SN at z=0.0146
Simon de Wet (SAAO, UCT), Orapeleng Mogawana (SAAO, UCT), Nic Erasmus (SAAO), Paul Groot (SAAO,UCT,Radboud), Rachel Bru…
Source Group: BlackGEM
Keywords: Supernova, Transient
Related Objects:
2024diq
RA, DEC:18:38:18.331, -65:25:04.01
(279.576380, -65.417780)
Redshift:0.013
Type:SN II
See object 2024diq
We report the discovery of flash-ionised emission lines in early spectroscopy of AT2024diq.
AstroNote 2024-9
Type: Object/s-Discovery/Classification
Released: 2024-01-07 15:16:36
AT2024qc in WISEA J103650.74-260918.8 at 55 Mpc
Paul Groot (Radboud , UCT, SAAO), Hugo Tranin (U Barcelona), Paul Vreeswijk (Radboud), Gavin Ramsay (Armagh)
Source Group: BlackGEM
Keywords: Time-domain, Surveys, Photometry, Transient, Optical
Related Objects:
2024qc [BGEM J103650.69-260923.7]
RA, DEC:10:36:50.710, -26:09:23.76
(159.211292, -26.156600)
Redshift:0.012
Type:SN II
See object 2024qc [BGEM J103650.69-260923.7]
We report the discovery of AT2024qc in WISEA J103650.74-260918.8 at 55 Mpc, detected at q_AB = 17.5 with the BlackGEM-4 ("Emerald") telescope.

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AstroNote 2022-145
Released: 2022-07-16
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Early multiband light curve of SN 2023ixf
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Classification of SN 2020jfo (ZTF20aaynrrh) as a young Type II supernova
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SN 2023tyk: discovery to spectroscopic classification performed fully automatically
Nabeel Rehemtulla (NU), Adam Miller (NU), Christoffer Fremling (Caltech), D. A. Perley (LJMU), Yu-J…
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Onset of SN 2023ixf observed over East Asian longitudes
Yiming Mao, Mi Zhang, Guangyao Cai, Jinan Chen, Jin Chen, Xing Gao, Keying Li, Xiaodong Lyu, Yujing…
AstroNote 2019-163
Released: 2019-12-31
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ePESSTO+ re-classification of AT2019xis as a light echo of SN 1987A in the LMC.
S. Taubenberger (MPA), D. Malesani (DTU Space), G. Terreran (Northwestern), S. J. Smartt (QUB), A. …
AstroNote 2020-126
Released: 2020-06-25
Views Count: 2157
ATLAS20qoq (AT2020nlb): discovery of a candidate SN in MESSIER 85 (17 Mpc)
A. Townsend (Queen's University Belfast / University of Manchester), K. W. Smith, S. Srivastav…
AstroNote 2020-70
Released: 2020-03-30
Views Count: 2026
Fast Radio Bursts (FRBs) now reported to and distributed via the TNS
O. Yaron, E. Ofek, A. Gal-Yam, A. Sass (Weizmann)

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BlackGEM Finder Charts with Transient Reports
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