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Title: X- And γ-Ray Pulsations Of The Nearby Radio-Faint PSR J1741–2054

The results of a deep XMM-Newton observation of the radio-faint γ-ray pulsar J1741–2054 and its nebula together with the analysis of five years of Fermi Large Area Telescope (LAT) data are reported. The X-ray spectrum of the pulsar is consistent with an absorbed power law plus a blackbody, originating at least partly from the neutron star cooling. The nebular emission is consistent with that of a synchrotron pulsar wind nebula, with hints of spatial spectral variation. We extended the available Fermi LAT ephemeris and folded the γ-ray and X-ray data. We detected X-ray pulsations from the neutron star: both the thermal and non-thermal components are ~35%-40% pulsed, with phase-aligned maxima. A sinusoid fits the thermal-folded profile well. A 10 bin phase-resolved analysis of the X-ray emission shows softening of the non-thermal spectrum during the on-pulse phases. The radio, X-ray, and γ-ray light curves are single-peaked, not phase-aligned, with the X-ray peak trailing the γ-ray peak by more than half a rotation. Spectral considerations suggest that the most probable pulsar distance is in the 0.3-1.0 kpc range, in agreement with the radio dispersion measure.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [4] ;  [5] ;  [6] ;  [7] ;  [8]
  1. Istituto Nazionale di Astrofisica (INAF), Milano (Italy)
  2. Istituto Nazionale di Astrofisica (INAF), Milano (Italy); Univ. of California, Santa Cruz, CA (United States). Santa Cruz Inst. for Particle Physics
  3. Univ. of California, Santa Cruz, CA (United States). Santa Cruz Inst. for Particle Physics; City Univ. of Hong Kong (China)
  4. Istituto Nazionale di Astrofisica (INAF), Milano (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Pavia (Italy)
  5. Univ. of Virginia, Charlottesville, VA (United States)
  6. Istituto Nazionale di Astrofisica (INAF), Milano (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Pavia (Italy); Univ. degli Studi di Pavia (Italy)
  7. Univ. of Virginia, Charlottesville, VA (United States); Univ. of Alberta, Edmonton, AB (Canada)
  8. Columbia Univ., New York, NY (United States). Columbia Astrophysics Lab.; Arecibo Observatory, PR (United States)
Publication Date:
Grant/Contract Number:
AC02-76SF00515
Type:
Accepted Manuscript
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 790; Journal Issue: 1; Journal ID: ISSN 0004-637X
Publisher:
Institute of Physics (IOP)
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS
OSTI Identifier:
1356463

Marelli, M., Belfiore, A., Saz Parkinson, P., Caraveo, P., De Luca, A., Sarazin, C., Salvetti, D., Sivakoff, G. R., and Camilo, F.. X- And γ-Ray Pulsations Of The Nearby Radio-Faint PSR J1741–2054. United States: N. p., Web. doi:10.1088/0004-637X/790/1/51.
Marelli, M., Belfiore, A., Saz Parkinson, P., Caraveo, P., De Luca, A., Sarazin, C., Salvetti, D., Sivakoff, G. R., & Camilo, F.. X- And γ-Ray Pulsations Of The Nearby Radio-Faint PSR J1741–2054. United States. doi:10.1088/0004-637X/790/1/51.
Marelli, M., Belfiore, A., Saz Parkinson, P., Caraveo, P., De Luca, A., Sarazin, C., Salvetti, D., Sivakoff, G. R., and Camilo, F.. 2014. "X- And γ-Ray Pulsations Of The Nearby Radio-Faint PSR J1741–2054". United States. doi:10.1088/0004-637X/790/1/51. https://www.osti.gov/servlets/purl/1356463.
@article{osti_1356463,
title = {X- And γ-Ray Pulsations Of The Nearby Radio-Faint PSR J1741–2054},
author = {Marelli, M. and Belfiore, A. and Saz Parkinson, P. and Caraveo, P. and De Luca, A. and Sarazin, C. and Salvetti, D. and Sivakoff, G. R. and Camilo, F.},
abstractNote = {The results of a deep XMM-Newton observation of the radio-faint γ-ray pulsar J1741–2054 and its nebula together with the analysis of five years of Fermi Large Area Telescope (LAT) data are reported. The X-ray spectrum of the pulsar is consistent with an absorbed power law plus a blackbody, originating at least partly from the neutron star cooling. The nebular emission is consistent with that of a synchrotron pulsar wind nebula, with hints of spatial spectral variation. We extended the available Fermi LAT ephemeris and folded the γ-ray and X-ray data. We detected X-ray pulsations from the neutron star: both the thermal and non-thermal components are ~35%-40% pulsed, with phase-aligned maxima. A sinusoid fits the thermal-folded profile well. A 10 bin phase-resolved analysis of the X-ray emission shows softening of the non-thermal spectrum during the on-pulse phases. The radio, X-ray, and γ-ray light curves are single-peaked, not phase-aligned, with the X-ray peak trailing the γ-ray peak by more than half a rotation. Spectral considerations suggest that the most probable pulsar distance is in the 0.3-1.0 kpc range, in agreement with the radio dispersion measure.},
doi = {10.1088/0004-637X/790/1/51},
journal = {Astrophysical Journal},
number = 1,
volume = 790,
place = {United States},
year = {2014},
month = {7}
}