• Media type: E-Article
  • Title: Polarimetry of GRB 230818A
  • Contributor: Bernardes, Denis; Steele, Iain; Jermak, Helen; McCall, Callum
  • Published: American Astronomical Society, 2024
  • Published in: Research Notes of the AAS, 8 (2024) 3, Seite 87
  • Language: Not determined
  • DOI: 10.3847/2515-5172/ad3557
  • ISSN: 2515-5172
  • Keywords: General Earth and Planetary Sciences ; General Environmental Science
  • Origination:
  • Footnote:
  • Description: Abstract We present a preliminary analysis of optical photometric and polarimetric observations of GRB 230818A obtained with the Liverpool Telescope starting 3.2 minutes after the alert. The optical photometry suggests a reverse shock-dominated afterglow, transitioning to forward shock at around 15 minutes. The polarization shows a low degree (upper limit 6%) early in the light curve. This is in contrast to the expected result since this regime should be dominated by the reverse shock wave that, in turn, should present a higher degree of polarization.
  • Access State: Open Access