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Title: Long-term study of the double pulsar J0737-3039 with XMM-Newton: pulsar timing

Abstract

The relativistic double neutron star binary PSR J0737−3039 shows clear evidence of orbital phase-dependent wind-companion interaction, both in radio and X-rays. In this paper, we present the results of timing analysis of PSR J0737−3039 performed during 2006 and 2011 XMM-Newton Large Programs that collected ∼20,000 X-ray counts from the system. We detected pulsations from PSR J0737−3039A (PSR A) through the most accurate timing measurement obtained by XMM-Newton so far, the spin period error being of 2 × 10{sup −13} s. PSR A’s pulse profile in X-rays is very stable despite significant relativistic spin precession that occurred within the time span of observations. This yields a constraint on the misalignment between the spin axis and the orbital momentum axis δ{sub A}≈6.6{sub −5.4}{sup +1.3} deg, consistent with estimates based on radio data. We confirmed pulsed emission from PSR J0737−3039B (PSR B) in X-rays even after its disappearance in radio. The unusual phenomenology of PSR B’s X-ray emission includes orbital pulsed flux and profile variations as well as a loss of pulsar phase coherence on timescales of years. We hypothesize that this is due to the interaction of PSR A’s wind with PSR B’s magnetosphere and the orbital-dependent penetration of the wind plasma onto PSRmore » B closed field lines. Finally, the analysis of the full XMM-Newton data set provided evidence of orbital flux variability (∼7%) for the first time, involving a bow-shock scenario between PSR A’s wind and PSR B’s magnetosphere.« less

Authors:
; ; ; ;  [1]; ;  [2];  [3];  [4];
  1. INAF—Osservatorio Astronomico di Cagliari, Via della Scienza 5, I-09047—Selargius (Canada) (Italy)
  2. Jodrell Bank Centre for Astrophysics, The University of Manchester, Manchester, M13 9PL (United Kingdom)
  3. Department of Physics, Purdue University, 525 Northwestern Avenue, West Lafayette, IN 47907-2036 (United States)
  4. University of Oxford—Department of Physics, Astrophysics—Keble Road, Oxford OX1 3RH (United Kingdom)
Publication Date:
OSTI Identifier:
22868988
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 824; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; EMISSION; NEUTRON STARS; PLASMA; PRECESSION; PULSARS; PULSATIONS; RELATIVISTIC RANGE; SHOCK WAVES; STELLAR WINDS; X RADIATION

Citation Formats

Iacolina, M. N., Pellizzoni, A., Egron, E., Possenti, A., Burgay, M., Breton, R., Kramer, M., Lyutikov, M., Motta, S. E., Luca, A. De, and Tiengo, A., E-mail: iacolina@oa-cagliari.inaf.it. Long-term study of the double pulsar J0737-3039 with XMM-Newton: pulsar timing. United States: N. p., 2016. Web. doi:10.3847/0004-637X/824/2/87.
Iacolina, M. N., Pellizzoni, A., Egron, E., Possenti, A., Burgay, M., Breton, R., Kramer, M., Lyutikov, M., Motta, S. E., Luca, A. De, & Tiengo, A., E-mail: iacolina@oa-cagliari.inaf.it. Long-term study of the double pulsar J0737-3039 with XMM-Newton: pulsar timing. United States. https://doi.org/10.3847/0004-637X/824/2/87
Iacolina, M. N., Pellizzoni, A., Egron, E., Possenti, A., Burgay, M., Breton, R., Kramer, M., Lyutikov, M., Motta, S. E., Luca, A. De, and Tiengo, A., E-mail: iacolina@oa-cagliari.inaf.it. Mon . "Long-term study of the double pulsar J0737-3039 with XMM-Newton: pulsar timing". United States. https://doi.org/10.3847/0004-637X/824/2/87.
@article{osti_22868988,
title = {Long-term study of the double pulsar J0737-3039 with XMM-Newton: pulsar timing},
author = {Iacolina, M. N. and Pellizzoni, A. and Egron, E. and Possenti, A. and Burgay, M. and Breton, R. and Kramer, M. and Lyutikov, M. and Motta, S. E. and Luca, A. De and Tiengo, A., E-mail: iacolina@oa-cagliari.inaf.it},
abstractNote = {The relativistic double neutron star binary PSR J0737−3039 shows clear evidence of orbital phase-dependent wind-companion interaction, both in radio and X-rays. In this paper, we present the results of timing analysis of PSR J0737−3039 performed during 2006 and 2011 XMM-Newton Large Programs that collected ∼20,000 X-ray counts from the system. We detected pulsations from PSR J0737−3039A (PSR A) through the most accurate timing measurement obtained by XMM-Newton so far, the spin period error being of 2 × 10{sup −13} s. PSR A’s pulse profile in X-rays is very stable despite significant relativistic spin precession that occurred within the time span of observations. This yields a constraint on the misalignment between the spin axis and the orbital momentum axis δ{sub A}≈6.6{sub −5.4}{sup +1.3} deg, consistent with estimates based on radio data. We confirmed pulsed emission from PSR J0737−3039B (PSR B) in X-rays even after its disappearance in radio. The unusual phenomenology of PSR B’s X-ray emission includes orbital pulsed flux and profile variations as well as a loss of pulsar phase coherence on timescales of years. We hypothesize that this is due to the interaction of PSR A’s wind with PSR B’s magnetosphere and the orbital-dependent penetration of the wind plasma onto PSR B closed field lines. Finally, the analysis of the full XMM-Newton data set provided evidence of orbital flux variability (∼7%) for the first time, involving a bow-shock scenario between PSR A’s wind and PSR B’s magnetosphere.},
doi = {10.3847/0004-637X/824/2/87},
url = {https://www.osti.gov/biblio/22868988}, journal = {Astrophysical Journal},
issn = {0004-637X},
number = 2,
volume = 824,
place = {United States},
year = {2016},
month = {6}
}