English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present the analysis of six XMM-Newton observations of the Anomalous X-rayPulsar CXOU J010043.1-721134, the magnetar candidate characterized by thelowest interstellar absorption. In contrast with all the other magnetarcandidates, its X-ray spectrum cannot be fit by an absorbed power-law plusblackbody model. The sum of two (absorbed) blackbody components with kT1=0.30keV and kT2=0.7 keV gives an acceptable fit, and the radii of the correspondingblackbody emission regions are R1=12.1 km and R2=1.7 km. The former value isconsistent with emission from a large fraction of a neutron star surface and,given the well known distance of CXOU J010043.1-721134, that is located in theSmall Magellanic Cloud, it provides the most constraining lower limit to amagnetar radius ever obtained. A more physical model, where resonant cyclotronscattering in the magnetar magnetosphere is taken into account, has also beensuccessfully applied to this source.

XMM-Newton observations of CXOU J010043.1-721134: the first deep look at the soft X-ray emission of a magnetar