Study of spectral and temporal behaviour of AXP 1E 1048.1-5937 using AstroSat
In this project, we present a study of the temporal and spectral properties of persistent emission from the Anomalous X-Ray Pulsar AXP 1E 1048.1−5937 located in the Carina constellation, using the ~40 ks exposure time data recorded over 11th and 12th January 2017 by the Large Area X Ray Proportional Counter (LAXPC) instruments aboard AstroSat – India’s first dedicated multi-wavelength astronomy satellite.
We studied the source spectrum in soft and intermediate X-ray bands (~4 − 25 KeV) to understand the possible emission behaviour, and its mechanisms and emission regions. Through short-term timing studies, we determined the spin period of the source and studied the pulse proﬁle and pulse fraction evolution in order to probe the magnetic ﬁeld of this source and its complex morphologies. We discuss our temporal and spectral results in the context of the radiative behaviour of the magnetar and also with respect to the long-term evolution of this source and address its implications.
Keywords: Magnetars, Anomalous X-Ray Pulsars, Neutron Stars, Timing, Spectrum, LAXPC
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