Shallow decay phase of GRB X-ray afterglows from relativistic windbubbles

2007/05/08 by Yun-Wei Yu, Zi-Gao Dai · 3 citations
Physics and Astronomy · #Astrophysical Phenomena and Observations #Gamma-ray bursts and supernovae #Pulsars and Gravitational Waves Research #astro-ph

paper · pdf · doi:10.1051/0004-6361:20077053

published as Astron.Astrophys.470:119,2007 · 5 pages, 4 figures, Accepted for Publication in A&A

arxiv created 2007/05/08 · openalex publication_date 2007/05/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

Aims.The postburst object of a GRB is likely to be a highly magnetized, rapidly rotating compact object (e.g., a millisecond magnetar), which could produce an ultrarelativistic electron-positron-pair wind. The interaction of such a wind with an outwardly expanding fireball ejected during the burst leads to a relativistic wind bubble (RWB). We investigate the properties of RWBs and use this model to explain the shallow decay phase of the early X-ray afterglows observed by Swift.

Citations

• Fluid dynamics of relativistic blast waves
• The Supernova -- Gamma-Ray Burst Connection

Cited by

• SPIN EVOLUTION OF MILLISECOND MAGNETARS WITH HYPERACCRETING FALLBACK DISKS: IMPLICATIONS FOR EARLY AFTERGLOWS OF GAMMA-RAY BURSTS
• SHOCK BREAKOUT DRIVEN BY THE REMNANT OF A NEUTRON STAR BINARY MERGER: AN X-RAY PRECURSOR OF MERGERNOVA EMISSION
• Hyperaccretion Disks around Neutron Stars

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