2005/11/29 by Ünal Ertan, U. Ertan, Ersin Göğüş +2 · 27 citations
Physics and Astronomy · #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Bursting #Epoch (astronomy) #Flare #Gamma-ray bursts and supernovae #Infrared #Light curve #Optics #Physics #Pulsar #Pulsars and Gravitational Waves Research #X-ray #astro-ph
paper · pdf · doi:10.1086/500097
published in The Astrophysical Journal 640(1), 435-440 (IOP Publishing) · 17 pages, 3 figures, accepted for publication in ApJ
arxiv created 2005/11/29 · openalex publication_date 2006/03/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The long-term (~1.5 yr) X-ray enhancement and the accompanying infrared enhancement light curves of the anomalous X-ray pulsar 1E 2259+586 following the major bursting epoch can be accounted for by the relaxation of a fallback disk that has been pushed back by a gamma-ray flare. The required burst energy estimated from the results of our model fits is low enough for such a burst to have remained below the detection limits. We find that an irradiated disk model with a low irradiation efficiency is in good agreement with both X-ray and infrared data. Nonirradiated disk models also give a good fit to the X-ray light curve, but are not consistent with the infrared data for the first week of the enhancement.