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Discovery of two millisecond pulsars in fermi sources with the nançay radio telescope

We report the discovery of two millisecond pulsars in a search for radio pulsations at the positions of Fermi -Large Area Telescope sources with no previously known counterparts, using the Nançay Radio Telescope. The two millisecond pulsars, PSRs J2017+0603 and J2302+4442, have rotational periods of... Full description

Journal Title: The Astrophysical Journal 2011, Vol.732(1), p.47 (11pp)
Main Author: Cognard, I.
Other Authors: Guillemot, L. , Johnson, T. J. , Smith, D. A. , Venter, C. , Harding, A. K. , Wolff, M. T. , Cheung, C. C. , Donato, D. , Abdo, A. A. , Ballet, J. , Camilo, F. , Desvignes, G. , Dumora, D. , Ferrara, E. C. , Freire, P. C. C. , Grove, J. e. , Johnston, S. , Keith, M. , Kramer, M. , Lyne, A. G. , Michelson, P. F. , Parent, D. , Ransom, S. M. , Ray, P. s. , Romani, R. W. , Parkinson, P. M. Saz , Stappers, B. W. , Theureau, G. , Thompson, D. J. , Weltevrede, P. , Wood, K. S.
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0004-637X ; E-ISSN: 1538-4357 ; DOI: 10.1088/0004-637X/732/1/47
Link: http://dx.doi.org/10.1088/0004-637X/732/1/47
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recordid: iop10.1088/0004-637X/732/1/47
title: Discovery of two millisecond pulsars in fermi sources with the nançay radio telescope
format: Article
creator:
  • Cognard, I.
  • Guillemot, L.
  • Johnson, T. J.
  • Smith, D. A.
  • Venter, C.
  • Harding, A. K.
  • Wolff, M. T.
  • Cheung, C. C.
  • Donato, D.
  • Abdo, A. A.
  • Ballet, J.
  • Camilo, F.
  • Desvignes, G.
  • Dumora, D.
  • Ferrara, E. C.
  • Freire, P. C. C.
  • Grove, J. e.
  • Johnston, S.
  • Keith, M.
  • Kramer, M.
  • Lyne, A. G.
  • Michelson, P. F.
  • Parent, D.
  • Ransom, S. M.
  • Ray, P. s.
  • Romani, R. W.
  • Parkinson, P. M. Saz
  • Stappers, B. W.
  • Theureau, G.
  • Thompson, D. J.
  • Weltevrede, P.
  • Wood, K. S.
subjects:
  • Astrophysics - High Energy Astrophysical Phenomena
  • Astrophysics - Astrophysics Of Galaxies
ispartof: The Astrophysical Journal, 2011, Vol.732(1), p.47 (11pp)
description: We report the discovery of two millisecond pulsars in a search for radio pulsations at the positions of Fermi -Large Area Telescope sources with no previously known counterparts, using the Nançay Radio Telescope. The two millisecond pulsars, PSRs J2017+0603 and J2302+4442, have rotational periods of 2.896 and 5.192 ms and are both in binary systems with low-eccentricity orbits and orbital periods of 2.2 and 125.9 days, respectively, suggesting long recycling processes. Gamma-ray pulsations were subsequently detected for both objects, indicating that they power the associated Fermi sources in which they were found. The gamma-ray light curves and spectral properties are similar to those of previously detected gamma-ray millisecond pulsars. Detailed modeling of the observed radio and gamma-ray light curves shows that the gamma-ray emission seems to originate at high altitudes in their magnetospheres. Additionally, X-ray observations revealed the presence of an X-ray source at the position of PSR J2302+4442, consistent with thermal emission from a neutron star. These discoveries along with the numerous detections of radio-loud millisecond pulsars in gamma rays suggest that many Fermi sources with no known counterpart could be unknown millisecond pulsars.
language: eng
source:
identifier: ISSN: 0004-637X ; E-ISSN: 1538-4357 ; DOI: 10.1088/0004-637X/732/1/47
fulltext: fulltext
issn:
  • 0004-637X
  • 1538-4357
  • 0004637X
  • 15384357
url: Link


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titleDiscovery of two millisecond pulsars in fermi sources with the nançay radio telescope
creatorCognard, I. ; Guillemot, L. ; Johnson, T. J. ; Smith, D. A. ; Venter, C. ; Harding, A. K. ; Wolff, M. T. ; Cheung, C. C. ; Donato, D. ; Abdo, A. A. ; Ballet, J. ; Camilo, F. ; Desvignes, G. ; Dumora, D. ; Ferrara, E. C. ; Freire, P. C. C. ; Grove, J. e. ; Johnston, S. ; Keith, M. ; Kramer, M. ; Lyne, A. G. ; Michelson, P. F. ; Parent, D. ; Ransom, S. M. ; Ray, P. s. ; Romani, R. W. ; Parkinson, P. M. Saz ; Stappers, B. W. ; Theureau, G. ; Thompson, D. J. ; Weltevrede, P. ; Wood, K. S.
ispartofThe Astrophysical Journal, 2011, Vol.732(1), p.47 (11pp)
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descriptionWe report the discovery of two millisecond pulsars in a search for radio pulsations at the positions of Fermi -Large Area Telescope sources with no previously known counterparts, using the Nançay Radio Telescope. The two millisecond pulsars, PSRs J2017+0603 and J2302+4442, have rotational periods of 2.896 and 5.192 ms and are both in binary systems with low-eccentricity orbits and orbital periods of 2.2 and 125.9 days, respectively, suggesting long recycling processes. Gamma-ray pulsations were subsequently detected for both objects, indicating that they power the associated Fermi sources in which they were found. The gamma-ray light curves and spectral properties are similar to those of previously detected gamma-ray millisecond pulsars. Detailed modeling of the observed radio and gamma-ray light curves shows that the gamma-ray emission seems to originate at high altitudes in their magnetospheres. Additionally, X-ray observations revealed the presence of an X-ray source at the position of PSR J2302+4442, consistent with thermal emission from a neutron star. These discoveries along with the numerous detections of radio-loud millisecond pulsars in gamma rays suggest that many Fermi sources with no known counterpart could be unknown millisecond pulsars.
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authorCognard, I. ; Guillemot, L. ; Johnson, T. J. ; Smith, D. A. ; Venter, C. ; Harding, A. K. ; Wolff, M. T. ; Cheung, C. C. ; Donato, D. ; Abdo, A. A. ; Ballet, J. ; Camilo, F. ; Desvignes, G. ; Dumora, D. ; Ferrara, E. C. ; Freire, P. C. C. ; Grove, J. e. ; Johnston, S. ; Keith, M. ; Kramer, M. ; Lyne, A. G. ; Michelson, P. F. ; Parent, D. ; Ransom, S. M. ; Ray, P. s. ; Romani, R. W. ; Parkinson, P. M. Saz ; Stappers, B. W. ; Theureau, G. ; Thompson, D. J. ; Weltevrede, P. ; Wood, K. S.
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19Kramer, M.
20Lyne, A. G.
21Michelson, P. F.
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24Ray, P. s.
25Romani, R. W.
26Parkinson, P. M. Saz
27Stappers, B. W.
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atitleDISCOVERY OF TWO MILLISECOND PULSARS IN FERMI SOURCES WITH THE NANÇAY RADIO TELESCOPE
jtitleThe Astrophysical Journal
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abstractWe report the discovery of two millisecond pulsars in a search for radio pulsations at the positions of Fermi -Large Area Telescope sources with no previously known counterparts, using the Nançay Radio Telescope. The two millisecond pulsars, PSRs J2017+0603 and J2302+4442, have rotational periods of 2.896 and 5.192 ms and are both in binary systems with low-eccentricity orbits and orbital periods of 2.2 and 125.9 days, respectively, suggesting long recycling processes. Gamma-ray pulsations were subsequently detected for both objects, indicating that they power the associated Fermi sources in which they were found. The gamma-ray light curves and spectral properties are similar to those of previously detected gamma-ray millisecond pulsars. Detailed modeling of the observed radio and gamma-ray light curves shows that the gamma-ray emission seems to originate at high altitudes in their magnetospheres. Additionally, X-ray observations revealed the presence of an X-ray source at the position of PSR J2302+4442, consistent with thermal emission from a neutron star. These discoveries along with the numerous detections of radio-loud millisecond pulsars in gamma rays suggest that many Fermi sources with no known counterpart could be unknown millisecond pulsars.
doi10.1088/0004-637X/732/1/47
date2011-05-01