First X-ray observations of the young pulsar J1357-6429

Abstract

The first short Chandra and XMM-Newton observations of the young and energetic pulsar J1357-6429 provided strong indications of a tail-like pulsar-wind nebula associated with this object, as well as pulsations of its X-ray flux with a pulsed fraction above 50% and a thermal component dominating at lower photon energies (below 2 keV). The elongated nebula is very compact in size and may be interpreted as evidence for a pulsar jet. The thermal radiation is most plausibly emitted from the entire neutron star surface of a 10 km radius and a 1.0+/-0.1 K temperature, covered with a magnetized hydrogen atmosphere. At higher energies the pulsar's emission is of a nonthermal (magnetospheric) origin, with a power-law spectrum of a photon index of 1.1-1.3. This makes the X-ray properties of PSR J1357-6429 very similar to those of the youngest pulsars J1119-6127 and Vela with a detected thermal radiation.

arXiv commentMinor changes, including the reference to Esposito et al. (2007 A&A, 467, L45). Accepted by ApJ Letters

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Cited by in corpus (24)

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• Using Chandra to Unveil the High-Energy Properties of the High-Magnetic Field Radio Pulsar J1119-6127
• Discovery of the source HESS J1356-645 associated with the young and energetic PSR J1357-6429
• Constraining Superfluidity in Dense Matter from the Cooling of Isolated Neutron Stars
• The Young Pulsar J1357-6429 and Its Pulsar Wind Nebula
• Deep Chandra observations of TeV binaries II: LS 5039
• Young energetic PSR J1617-5055, its underluminous nebula and unidentified TeV source HESS J1616-508
• Thermal Relaxation of Dark Matter Admixed Neutron Star
• XMM-Newton observation of the nearby pulsar B1133+16
• Discovery of gamma and X-ray pulsations from the young and energetic PSR J1357-6429 with Fermi and XMM-Newton
• Search for continuous gravitational waves from ten H.E.S.S. sources using a hidden Markov model
• Neutrino luminosities and heat capacities of neutron stars in analytic form
• Possible optical counterpart of PSR J1357-6429
• VLT observations of the two Fermi pulsars PSR J1357-6429 and PSR J1048-5832
• Joule heating in high magnetic field pulsars
• GeV gamma-ray emission from pulsar wind nebula HESS J1356-645 with Fermi-LAT
• X-ray spectral analysis of the neutron star in SNR 1E 0102.2-7219
• Near-infrared observations of PSR J1357-6429
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• Calculation of thermal conductivity coefficients of electrons in magnetized dense matter
• Observations of PSR J1357-6429 at 2.1 GHz with the Australia Telescope Compact Array