APOD and General Astronomy Discussion Forum
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AVAO wrote: ↑Fri Nov 17, 2023 4:38 pm This is a Pre-News Channel for discussing deep sky news from various news and social media channels, blogs and other sources.
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Reply with quote"A giant flare on a magnetar in M 82 (or a GRB) was detected by the Integral and Fermi satellites on November 15, 2023, and an optical counterpart may also exist." (Source:Daniel Fischer at https://skyweek.wordpress.com)
ABSTRACT
We observed the field of GRB 231115A (Fermi GBM Team, GCN 35035) with 0.7m GROWTH India telescope. We started observations at 2023-11-15 16:47:58.140 UT, 1.19 hours after the fermi trigger (as soon as the source became visible). We obtained multiple 300s exposures in multiple filters. We have multiple detections of a transient AT 2023xvj at RA = 09:56:00.2, Dec = 69:40:29.2, with r' = 19.2. Owing to the dense background, current total astrometric uncertainty is about 0.6". The source is 0.3' from the reported Integral position, consistent with their 2' uncertainty. The magnitudes are calibrated against PanSTARRS DR1 (Chambers et al., 2016) and not corrected for Galactic extinction.
At this stage, we cannot rule out that this might be Nova or some other transient in M82. Further imaging and analysis is under way. We strongly encourage follow-up observations. [/b] ..more...
Discovery certificate for object 2023xvj
AVAO wrote: ↑Sun Nov 19, 2023 10:26 am Discovery of a giant flare on a magnetar ((AT 2023xvj) in M 82 (Cigar galaxy) or a GRB
R. Kumar, A. Salgundi, V. Swain, Y. Wagh, V. Bhalerao (IIT Bombay), G. C. Anupama, S. Barway (IIA), R. Norboo (IAO), T. Ahumada, V. Karambelkar, M. M. Kasliwal (Caltech) report on behalf of a larger collaboration
gcn.nasa.gov | 2023 Nov 15
"A giant flare on a magnetar in M 82 (or a GRB) was detected by the Integral and Fermi satellites on November 15, 2023, and an optical counterpart may also exist." (Source:Daniel Fischer at https://skyweek.wordpress.com)
ABSTRACT
We observed the field of GRB 231115A (Fermi GBM Team, GCN 35035) with 0.7m GROWTH India telescope. We started observations at 2023-11-15 16:47:58.140 UT, 1.19 hours after the fermi trigger (as soon as the source became visible). We obtained multiple 300s exposures in multiple filters. We have multiple detections of a transient AT 2023xvj at RA = 09:56:00.2, Dec = 69:40:29.2, with r' = 19.2. Owing to the dense background, current total astrometric uncertainty is about 0.6". The source is 0.3' from the reported Integral position, consistent with their 2' uncertainty. The magnitudes are calibrated against PanSTARRS DR1 (Chambers et al., 2016) and not corrected for Galactic extinction.
At this stage, we cannot rule out that this might be Nova or some other transient in M82. Further imaging and analysis is under way. We strongly encourage follow-up observations. [/b] ..more...
Discovery certificate for object 2023xvj
Interesting, Jac! But I don't see an optical counterpart either.AVAO wrote: ↑Sun Nov 19, 2023 11:31 amAVAO wrote: ↑Sun Nov 19, 2023 10:26 am Discovery of a giant flare on a magnetar ((AT 2023xvj) in M 82 (Cigar galaxy) or a GRB
R. Kumar, A. Salgundi, V. Swain, Y. Wagh, V. Bhalerao (IIT Bombay), G. C. Anupama, S. Barway (IIA), R. Norboo (IAO), T. Ahumada, V. Karambelkar, M. M. Kasliwal (Caltech) report on behalf of a larger collaboration
gcn.nasa.gov | 2023 Nov 15
"A giant flare on a magnetar in M 82 (or a GRB) was detected by the Integral and Fermi satellites on November 15, 2023, and an optical counterpart may also exist." (Source:Daniel Fischer at https://skyweek.wordpress.com)
ABSTRACT
We observed the field of GRB 231115A (Fermi GBM Team, GCN 35035) with 0.7m GROWTH India telescope. We started observations at 2023-11-15 16:47:58.140 UT, 1.19 hours after the fermi trigger (as soon as the source became visible). We obtained multiple 300s exposures in multiple filters. We have multiple detections of a transient AT 2023xvj at RA = 09:56:00.2, Dec = 69:40:29.2, with r' = 19.2. Owing to the dense background, current total astrometric uncertainty is about 0.6". The source is 0.3' from the reported Integral position, consistent with their 2' uncertainty. The magnitudes are calibrated against PanSTARRS DR1 (Chambers et al., 2016) and not corrected for Galactic extinction.
At this stage, we cannot rule out that this might be Nova or some other transient in M82. Further imaging and analysis is under way. We strongly encourage follow-up observations. [/b] ..more...
Discovery certificate for object 2023xvj
I d'ont see an optical counterpart ...
Credit: NASA/ESA (HST(opt)/SST(IR))
Credit: NASA/ESA (HST)
Reply with quote
Reply with quote
ABSTRACT
This composite image of the Manatee Nebula captures the jet emanating from SS 433, a black hole pulling material inwards that is embedded in the supernova remnant which spawned it. Radio emission from the supernova remnant are blue-green, whereas the X-ray from IXPE, XMM-Newton and Chandra are highlighted in bright blue-purple and pink-white set against a backdrop of infrared data in red. The black hole emits twin jets of matter traveling in opposite directions at nearly the speed of light.
..more...
AVAO wrote: ↑Sat Jan 27, 2024 8:07 am Supernova remnant SS 433 - NASA's IXPE Helps Researchers Maximize 'Microquasar' Findings
NASA / ESA | 2024 Jan 17
Reply with quote
ABSTRACT
This composite image of the Manatee Nebula captures the jet emanating from SS 433, a black hole pulling material inwards that is embedded in the supernova remnant which spawned it. Radio emission from the supernova remnant are blue-green, whereas the X-ray from IXPE, XMM-Newton and Chandra are highlighted in bright blue-purple and pink-white set against a backdrop of infrared data in red. The black hole emits twin jets of matter traveling in opposite directions at nearly the speed of light.
..more...
SPN4Y Jac
this is amazingAVAO wrote: ↑Sun Nov 19, 2023 10:26 am Discovery of a giant flare on a magnetar ((AT 2023xvj) in M 82 (Cigar galaxy) or a GRB
R. Kumar, A. Salgundi, V. Swain, Y. Wagh, V. Bhalerao (IIT Bombay), G. C. Anupama, S. Barway (IIA), R. Norboo (IAO), T. Ahumada, V. Karambelkar, M. M. Kasliwal (Caltech) report on behalf of a larger collaboration
gcn.nasa.gov | 2023 Nov 15
Reply with quote"A giant flare on a magnetar in M 82 (or a GRB) was detected by the Integral and Fermi satellites on November 15, 2023, and an optical counterpart may also exist." (Source:Daniel Fischer at https://skyweek.wordpress.com)
ABSTRACT
We observed the field of GRB 231115A (Fermi GBM Team, GCN 35035) with 0.7m GROWTH India telescope. We started observations at 2023-11-15 16:47:58.140 UT, 1.19 hours after the fermi trigger (as soon as the source became visible). We obtained multiple 300s exposures in multiple filters. We have multiple detections of a transient AT 2023xvj at RA = 09:56:00.2, Dec = 69:40:29.2, with r' = 19.2. Owing to the dense background, current total astrometric uncertainty is about 0.6". The source is 0.3' from the reported Integral position, consistent with their 2' uncertainty. The magnitudes are calibrated against PanSTARRS DR1 (Chambers et al., 2016) and not corrected for Galactic extinction.
At this stage, we cannot rule out that this might be Nova or some other transient in M82. Further imaging and analysis is under way. We strongly encourage follow-up observations. [/b] ..more...
Discovery certificate for object 2023xvj
SPN4Y Jac
