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Post-outburst Radio Observations of the High Magnetic Field Pulsar PSR J1119-6127

Majid, Walid A. and Pearlman, Aaron B. and Dobreva, Tatyana and Horiuchi, Shinji and Kocz, Jonathon and Lippuner, Jonas and Prince, Thomas A. (2017) Post-outburst Radio Observations of the High Magnetic Field Pulsar PSR J1119-6127. Astrophysical Journal Letters, 834 (1). Art. No. L2. ISSN 2041-8205.

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We have carried out high-frequency radio observations of the high magnetic field pulsar PSR J1119-6127 following its recent X-ray outburst. While initial observations showed no evidence of significant radio emission, subsequent observations detected pulsed emission across a large frequency band. In this Letter, we report on the initial disappearance of the pulsed emission and its prompt reactivation and dramatic evolution over several months of observation. The periodic pulse profile at S-band (2.3 GHz) after reactivation exhibits a multi-component emission structure, while the simultaneous X-band (8.4 GHz) profile shows a single emission peak. Single pulses were also detected at S-band near the main emission peaks. We present measurements of the spectral index across a wide frequency bandwidth, which captures the underlying changes in the radio emission profile of the neutron star. The high-frequency radio detection, unusual emission profile, and observed variability suggest similarities with magnetars, which may independently link the high-energy outbursts to magnetar-like behavior.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Majid, Walid A.0000-0002-4694-4221
Pearlman, Aaron B.0000-0002-8912-0732
Dobreva, Tatyana0000-0002-2625-8873
Kocz, Jonathon0000-0003-0249-7586
Lippuner, Jonas0000-0002-5936-3485
Prince, Thomas A.0000-0002-8850-3627
Additional Information:© 2016. The American Astronomical Society. Received 2016 October 7; revised 2016 November 28; accepted 2016 December 8; published 2016 December 28. We thank V. Kaspi and R. Archibald for alerting us to the initial outburst and for providing an ephemeris for PSR J1119-6127. We also thank V. Kaspi for a careful reading of the manuscript and detailed comments. We acknowledge support from the DSN team for scheduling the observations. A. B. Pearlman acknowledges support by the Department of Defense (DoD) through the National Defense Science and Engineering Graduate Fellowship (NDSEG) Program and by the National Science Foundation Graduate Research Fellowship under Grant No. DGE-1144469. J. Lippuner acknowledges support from the Jet Propulsion Laboratory Graduate Fellowship program. A portion of this research was performed at the Jet Propulsion Laboratory, California Institute of Technology under a Research and Technology Development Grant and under a contract with the National Aeronautics and Space Administration. Government sponsorship is acknowledged.
Group:TAPIR, Walter Burke Institute for Theoretical Physics, Space Radiation Laboratory, Astronomy Department
Funding AgencyGrant Number
National Defense Science and Engineering Graduate (NDSEG) FellowshipUNSPECIFIED
NSF Graduate Research FellowshipDGE-1144469
NASA Graduate Student Research FellowshipUNSPECIFIED
Subject Keywords:ISM: individual objects (G292.2-0.5) ; ISM: supernova remnants; pulsars: individual (PSR J1119-6127) ; stars: magnetars; stars: neutron
Issue or Number:1
Record Number:CaltechAUTHORS:20170104-113953388
Persistent URL:
Official Citation:Walid A. Majid et al 2017 ApJL 834 L2
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:73208
Deposited By: George Porter
Deposited On:04 Jan 2017 20:56
Last Modified:07 Jul 2020 20:29

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