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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We report the study of the short (32 ms) and first SGR-like burst observedfrom the anomalous X-ray pulsar (AXP) 1E 1841-045 associated with the supernovaremnant (SNR) Kes 73, discovered on 2010 May 6 by the Burst Alert Telescope(BAT) onboard the Swift gamma-ray observatory. The 15-100 keV time-averagedburst spectrum is modeled by a single power-law (PL) with a photon indexGamma=3.2$^{+1.8}_{-1.0}$, and has a fluence of1.1$^{+0.4}_{-0.6}$$\times$10$^{-8}$ ergs cm$^{-2}$, luminosity of2.9$^{+1.1}_{-1.6}$$\times$10$^{39}$ ergs s$^{-1}$, and energy of7.2$^{+0.4}_{-0.6}$$\times$10$^{36}$ ergs. The prompt after-burst 0.5-10 keVquiescent spectrum obtained with the Swift X-ray Telescope (XRT) is best-fit byan absorbed PL model with Gamma=2.6$\pm$0.2 and an unabsorbed flux of9.1$^{+1.2}_{-1.4}$$\times$10$^{-11}$ ergs cm$^{-2}$ s$^{-1}$. To investigatethe pre-burst 0.5-10 keV persistent emission, we analyzed the archivalXMM-Newton observations and the spectra are well fitted by a two-componentblackbody (BB) plus PL model with a temperature kT=0.45$\pm$0.03 keV,Gamma=1.9$\pm$0.2, and an unabsorbed flux of4.3$^{+0.9}_{-1.2}$$\times$10$^{-11}$ ergs cm$^{-2}$ s$^{-1}$. Comparing theSwift-XRT spectrum with the XMM-Newton spectrum, spectral softening post-burstis evident with a 2.1 times increase in the unabsorbed flux. We discuss theburst activity and the persistent emission properties of AXP 1E 1841-045 incomparison with other magnetars and in the context of the magnetar model.

SWIFT study of the first SGR-like burst from AXP 1E 1841-045 in SNR Kes 73