Locating the Transient AXP XTE J1810-197

Details Locating the Transient AXP XTE J1810-197 Locating the Transient AXP XTE J1810-197

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002cxo..prop.1367g&link_type=abstract

Chandra Proposal ID #04508153

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Chandra Proposal Id #04508153

Scientific paper

The newly discovered 5.5s X-ray pulsar XTE J1810-197 (Markwardt et al, AUC 8168) is the 2nd example of a transient AXP (TAXP). Unlike the original TAXP, AX J1845-058 (Gotthelf & Vasisht 1998, NA, 3, 293), this new source was found prior to its fading away; furthermore, an archival XTE detection provides a spin-down rate, confirming its AXP status. TAXPs may be related to a growing class of young, isolated NSs whose properties are distinct from young rotation-powered pulsars, and whose basic physics is unknown. Examples are, the central compact object (CCO) in SNR RCW 103, whose flux is variable over years and lack pulsations, the Cas A point source, another possible quiescent AXP, based on its spectrum and central SNR location, and the original TAXP, AX J1845-058, found to be associated with a SNR. Chandra provides a unique opportunity to characterize a fading AXP, and to determine an possibly evolutionary link with the CCOs, thus unifying these mysterious manifestations of NSs.

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