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Simultaneous Radio and X-Ray observations of Crab Pulsar

Published online by Cambridge University Press:  04 June 2018

A. K. Basu ,
B. C. Joshi  and
D. Bhattacharya
A. K. Basu
Affiliation:
National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Pune University Campus, Pune 411007 email: avishek@ncra.tifr.res.in email: bcj@ncra.tifr.res.in
B. C. Joshi
Affiliation:
National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Pune University Campus, Pune 411007 email: avishek@ncra.tifr.res.in email: bcj@ncra.tifr.res.in
D. Bhattacharya
Affiliation:
Inter-University Centre for Astronomy and Astrophysics, Pune University Campus, Pune 411007 email: dipankar@iucaa.in
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Abstract

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Crab Pulsar (PSR B0531+21) is known to emit pulsed emission in all bands of the electromagnetic spectrum. It also emits giant radio pulses (GRPs) frequently, which are roughly a hundred to million times brighter than the normal pulses. We aim to study whether there is a significant X-ray enhancement correlated with the occurrence of GRPs, using simultaneous observations with the ASTROSAT, the Giant Meterwave Radio telescope (1300 MHz) and the Ooty Radio telescope (325 MHz). This required determination of fixed pipeline offsets between different instruments. We find the offset between ASTROSAT and GMRT to be −30.181 ± 0.095 ms and that between ASTROSAT and ORT to be −18.4 ± 0.2 ms. Our preliminary results with 1300 MHz data also show a break in pulse intensity distribution at ~ 33 Jy in the main pulse and ~ 28 Jy in the inter-pulse.

Keywords

instrumentation: interferometersline: profilesPulsar PSR J0531+2200telescopes
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S337: Pulsar Astrophysics the Next Fifty Years , September 2017 , pp. 309 - 310
Copyright
Copyright © International Astronomical Union 2018 

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