The effect of X-ray dust-scattering on a bright burst from the magnetar 1E 1547.0-5408

Abstract

A bright burst, followed by an X-ray tail lasting ~10 ks, was detected during an XMM-Newton observation of the magnetar 1E 1547.0-5408 carried out on 2009 February 3. The burst, also observed by SWIFT/BAT, had a spectrum well fit by the sum of two blackbodies with temperatures of ~4 keV and 10 keV and a fluence in the 0.3-150 keV energy range of ~1e-5 erg/cm2. The X-ray tail had a fluence of ~4e-8 erg/cm2. Thanks to the knowledge of the distances and relative optical depths of three dust clouds between us and 1E 1547.0-5408, we show that most of the X-rays in the tail can be explained by dust scattering of the burst emission, except for the first ~20-30 s. We point out that other X-ray tails observed after strong magnetar bursts may contain a non-negligible contribution due to dust scattering.

8 pages, 2 tables and 10 figures; accepted to publication in MNRAS

References in corpus (9)

• The strongest cosmic magnets: Soft Gamma-ray Repeaters and Anomalous X-ray Pulsars
• A Swift gaze into the 2006 March 29th burst forest of SGR 1900+14
• The Compact X-ray Source 1E 1547.0-5408 and the Radio Shell G327.24-0.13: A New Proposed Association between a Candidate Magnetar and a Candidate Supernova Remnant
• GRB 130925A: an ultra-long Gamma Ray Burst with a dust-echo afterglow, and implications for the origin of the ultra-long GRBs
• Giant Flare in SGR 1806-20 and Its Compton Reflection from the Moon
• GRB 090417B and its Host Galaxy: A Step Towards an Understanding of Optically-Dark Gamma-Ray Bursts
• X-ray and radio observations of the magnetar Swift J1834.9-0846 and its dust-scattering halo
• Dust-scattered X-ray halos around two Swift gamma-ray bursts: GRB 061019 and GRB 070129
• Gas absorption and dust extinction towards the Orion Nebula Cluster

Cited by in corpus (6)

• Ray-tracing simulations and spectral models of X-ray radiation in dusty media
• Behind the dust curtain: the spectacular case of GRB 160623A
• The long-term enhanced brightness of the magnetar 1E 1547.0-5408
• The X-ray variable sky as seen by MAXI: the future of dust echo tomography with bright Galactic X-ray bursts
• Ray Tracing Through Absorbing Dielectric Media in the Schwarzschild Spacetime
• X-ray and Radio Bursts from the Magnetar 1E1547.0-5408