DeepSPN: Deep Sky Pre-News

[AVAO]

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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[AVAO]

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

Data source: skyserver.sdss.org

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"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

Reply with quote

SPN4Y Jac

[AVAO]

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

Data source: skyserver.sdss.org

---

"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 ...

Click to view full size image 1 or image 2

Credit: NASA/ESA (HST(opt)/SST(IR))

Click to view full size image

Credit: NASA/ESA (HST)

Reply with quote

[Ann]

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

Data source: skyserver.sdss.org

---

"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 ...

Click to view full size image 1 or image 2

Credit: NASA/ESA (HST(opt)/SST(IR))

Click to view full size image

Credit: NASA/ESA (HST)

Reply with quote

Interesting, Jac! But I don't see an optical counterpart either.

Ann

[AVAO]

Supernova remnant SS 433 - NASA's IXPE Helps Researchers Maximize 'Microquasar' Findings
NASA / ESA | 2024 Jan 17

Microquasar SS 433 sits in the center of the supernova remnant W50. SS 433’s powerful jets, which distort the remnant’s shape. (Credit: X-ray: (IXPE): NASA/MSFC/IXPE; (Chandra): NASA/CXC/SAO; (XMM): ESA/XMM-Newton; IR: NASA/JPL/Caltech/WISE; Radio: NRAO/AUI/NSF/VLA/B. Saxton. (IR/Radio image created with data from M. Goss, et al.); Image Processing/compositing: NASA/CXC/SAO/N. Wolk & K. Arcand

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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...

Reply with quote

SPN4Y Jac

[AVAO]

Supernova remnant SS 433 - NASA's IXPE Helps Researchers Maximize 'Microquasar' Findings
NASA / ESA | 2024 Jan 17

Microquasar SS 433 sits in the center of the supernova remnant W50. SS 433’s powerful jets, which distort the remnant’s shape. (Credit: X-ray: (IXPE): NASA/MSFC/IXPE; (Chandra): NASA/CXC/SAO; (XMM): ESA/XMM-Newton; IR: NASA/JPL/Caltech/WISE; Radio: NRAO/AUI/NSF/VLA/B. Saxton. (IR/Radio image created with data from M. Goss, et al.); Image Processing/compositing: NASA/CXC/SAO/N. Wolk & K. Arcand

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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...

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SPN4Y Jac

"The jets can only be observed for a very short distance at their origin - too small to be visible in this image. The jets are then invisible for a distance of about 75 light-years before suddenly reappearing as bright sources of non-thermal emission (X-rays and gamma rays). The particles are accelerated efficiently at this location, which likely indicates a strong shock: a discontinuity in the medium that can accelerate particles."
© Science Communication Lab für MPIK/H.E.S.S.

Click to view full size image

© Background: NRAO/AUI/NSF, K. Golap, M. Goss; NASA's Wide Field Survey Explorer (WISE); X-rays (green contours): ROSAT/M. Brinkman; TeV (red): H.E.S.S. collaboration.

SS 433 in three different gamma ray energy ranges. Shown in green are radio observations of the Manatee Nebula with the microquasar visible as a bright spot near the center of the image. The solid lines show the outlines of the X-ray emission from the central regions and the large-scale jets after their reappearance. Red colors represent the gamma emission emitted by H.E.S.S. was detected at a) low (0.8-2.5 TeV, left), b) medium (2.5-10 TeV, middle) and c) high (>10 TeV, right) energies. The position of gamma ray emission shifts further away from the central binary system as energy decreases.

...interesting: H.E.S.S is the only telescope that can see both jets...

[quickchortle]

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

Data source: skyserver.sdss.org

---

"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

Reply with quote

SPN4Y Jac

this is amazing