A MAGNETAR-LIKE OUTBURST FROM A HIGH-B RADIO PULSAR
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Open Access
- 20 September 2016
- journal article
- Published by American Astronomical Society in The Astrophysical Journal Letters
- Vol. 829 (1), L21
- https://doi.org/10.3847/2041-8205/829/1/l21
Abstract
Radio pulsars are believed to have their emission powered by the loss of rotational kinetic energy. By contrast, magnetars show intense X-ray and γ-ray radiation whose luminosity greatly exceeds that due to spin down and magnetar luminosity is believed to be powered by intense internal magnetic fields. A basic prediction of this picture is that radio pulsars of high magnetic field should show magnetar-like emission. Here we report on a magnetar-like X-ray outburst from the radio pulsar PSR J1119–6127, heralded by two short bright X-ray bursts on 2016 July 27 and 28. Using target of opportunity data from the Swift X-ray Telescope and NuSTAR, we show that this pulsar's flux has brightened by a factor of in the 0.5–10 keV band, and that its previously soft X-ray spectrum has undergone a strong hardening with strong pulsations appearing for the first time above 2.5 keV, with phase-averaged emission detectable up to 25 keV. By comparing Swift-XRT and NuSTAR timing data with a pre-outburst ephemeris derived from Fermi Large Area Telescope data, we find that the source has contemporaneously undergone a large spin-up glitch of amplitude . The collection of phenomena observed thus far in this outburst strongly mirrors those in most magnetar outbursts and provides an unambiguous connection between the radio pulsar and magnetar populations.Other Versions
This publication has 45 references indexed in Scilit:
- The unusual glitch recoveries of the high-magnetic-field pulsar J1119−6127Monthly Notices of the Royal Astronomical Society, 2015
- ON THE MECHANISM OF HARD X-RAY EMISSION FROM MAGNETARSThe Astrophysical Journal, 2012
- THE LARGE AREA TELESCOPE ON THEFERMI GAMMA-RAY SPACE TELESCOPEMISSIONThe Astrophysical Journal, 2009
- No Detectable Radio Emission from the Magnetar‐Like Pulsar in Kes 75The Astrophysical Journal, 2008
- Transient pulsed radio emission from a magnetarNature, 2006
- The Swift X-Ray TelescopeSpace Science Reviews, 2005
- Supernova remnant G292.2-0.5, its pulsar, and the Galactic magnetic fieldMonthly Notices of the Royal Astronomical Society, 2004
- A Radio Supernova Remnant Associated with the Young Pulsar J1119−6127The Astrophysical Journal, 2001
- Discovery of Two High Magnetic Field Radio PulsarsThe Astrophysical Journal, 2000
- Parameter estimation in astronomy through application of the likelihood ratioThe Astrophysical Journal, 1979