Gamma-ray bursts afterglows with energy injection from a spinning down neutron star

• Published in: Astronomy and astrophysics (Berlin) Vol. 526; p. A121
• Main Authors: Dall’Osso, S., Stratta, G., Guetta, D., Covino, S., De Cesare, G., Stella, L.
• Format: Journal Article
• Language: English
• Published: Les Ulis EDP Sciences 01.02.2011
• Subjects: Astronomy; Earth, ocean, space; Exact sciences and technology; gamma-ray burst: general; relativistic processes; shock waves; stars: magnetars; X-rays: bursts; Spherical symmetry; Neutron stars; X ray burst; Magnetic dipoles; gamma-ray burst: general; stars: magnetars; Relativistic shock wave; Cosmic gamma sources; Light curves; G stars; Luminosity; Gamma ray burst; Phase transitions; relativistic processes; Shock waves; Afterglow; Dynamical evolution; Fireballs; Models; Analytical solution; X-rays: bursts; Magnetic energy

Aims. We investigate a model for the shallow decay phases of gamma-ray burst (GRB) afterglows discovered by Swift/XRT in the first hours following a GRB event. In the context of the fireball scenario, we consider the possibility that long-lived energy injection from a millisecond spinning, ultramagn...