2010/03/09 by Weiwei Zhu, Victoria M. Kaspi · 2 citations
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Earth Systems and Cosmic Evolution #astro-ph.HE
paper · pdf · doi:10.1088/0004-637x/719/1/351
published as The Astrophysical Journal, Volume 719, Issue 1, pp. 351-356 (2010) · 16 pags, 3 tables, 2 figures, submitted to ApJ.
arxiv created 2010/03/09 · openalex publication_date 2010/07/20 · arxiv updated 2010/11/29 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31
Anomalous X-ray pulsars (AXPs) are now established to exhibit significant X-ray variability and be prolific glitchers, with some glitches being accompanied by large radiative changes. An open issue is whether AXP glitches are generically accompanied by radiative changes, relevant for understanding magnetar physical properties. Here we report on an analysis of archival X-ray data from the AXP 1E 1841−045, obtained between 1993 and 2007. This AXP, located in the center of the supernova remnant Kes 73, has exhibited three glitches between 2002 and 2007, as determined by RXTE monitoring since 1999. We have searched for evidence of phase-averaged flux variability that could be present if glitches in AXPs are usually accompanied by radiative changes. We find no evidence for glitch-correlated flux changes from this source after 1999, supporting the existence of radiatively silent glitches in AXPs.