Challenging the Forward Shock Model with the 80 Ms Follow up of the X-ray Afterglow of Gamma-Ray Burst 130427A

DE PASQUALE M., Page M., Kann D. A., Oates S. R., Schulze S., Zhang B., ...Daha Fazla

GALAXIES, cilt.5, sa.1, 2017 (ESCI) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 5 Sayı: 1
  • Basım Tarihi: 2017
  • Doi Numarası: 10.3390/galaxies5010006
  • Dergi Adı: GALAXIES
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus
  • Anahtar Kelimeler: Gamma-ray bursts, X-ray afterglows, GRB modeling, GRB 130427A, VIEWING ANGLE, SWIFT, ENERGETICS, STANDARD
  • İstanbul Üniversitesi Adresli: Evet

Özet

GRB 130427A was the most luminous gamma-ray burst detected in the last 30 years. With an isotropic energy output of 8.5 x 10(53) erg and redshift of 0.34, it combined very high energetics with a relative proximity to Earth in an unprecedented way. Sensitive X-ray observatories such as XMM-Newton and Chandra have detected the afterglow of this event for a record-breaking baseline longer than 80 million seconds. The light curve displays a simple power-law over more than three decades in time. In this presentation, we explore the consequences of this result for a few models put forward so far to interpret GRB 130427A, and more in general the implication of this outcome in the context of the standard forward shock model.