Swift/XRT discovery of multiple dust-scattering X-ray rings around GRB 221009A
Abstract
Swift/XRT observed GRB221009A (GCN #32632, #32635, GCN #32636, #32637) in PC mode three times (Obs.ID: 01126853004, 01126853005, 01126853006) between 2022-10-10 14:08:49 UT and 2022-10-11 01:22:52 UT, for a net exposure time of 7464.5 s. The stacked Swift/XRT image in the 0.3-10 keV energy band shows the presence of a complex system of at least 9 bright expanding rings with radii from about 2.5 to 7.5 arcmin.
- Publication:
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The Astronomer's Telegram
- Pub Date:
- October 2022
- Bibcode:
- 2022ATel15661....1T
- Keywords:
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- Gamma-Ray Burst