Three millisecond pulsars in Fermi LAT unassociated bright sources

S. M. Ransom; P. S. Ray; F. Camilo; M. S.E. Roberts; Ö Çelik; M. T. Wolff; C. C. Cheung; M. Kerr; T. Pennucci; M. E. Decesar; I. Cognard; A. G. Lyne; B. W. Stappers; P. C.C. Freire; J. E. Grove; A. A. Abdo; G. Desvignes; D. Donato; E. C. Ferrara; N. Gehrels; L. Guillemot; C. Gwon; A. K. Harding; S. Johnston; M. Keith; M. Kramer; P. F. Michelson; D. Parent; P. M.Saz Parkinson; R. W. Romani; D. A. Smith; G. Theureau; D. J. Thompson; P. Weltevrede; K. S. Wood; M. Ziegler

doi:10.1088/2041-8205/727/1/L16

Three millisecond pulsars in Fermi LAT unassociated bright sources

S. M. Ransom, P. S. Ray, F. Camilo, M. S.E. Roberts, Ö Çelik, M. T. Wolff, C. C. Cheung, M. Kerr, T. Pennucci, M. E. Decesar, I. Cognard, A. G. Lyne, B. W. Stappers, P. C.C. Freire, J. E. Grove, A. A. Abdo, G. Desvignes, D. Donato, E. C. Ferrara, N. GehrelsL. Guillemot, C. Gwon, A. K. Harding, S. Johnston, M. Keith, M. Kramer, P. F. Michelson, D. Parent, P. M.Saz Parkinson, R. W. Romani, D. A. Smith, G. Theureau, D. J. Thompson, P. Weltevrede, K. S. Wood, M. Ziegler

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We searched for radio pulsars in 25 of the non-variable, unassociated sources in the Fermi LAT Bright Source List with the Green Bank Telescope at 820 MHz. We report the discovery of three radio and γ-ray millisecond pulsars (MSPs) from a high Galactic latitude subset of these sources. All of the pulsars are in binary systems, which would have made them virtually impossible to detect in blind γ-ray pulsation searches. They seem to be relatively normal, nearby (≤2 kpc) MSPs. These observations, in combination with the Fermi detection of γ-rays from other known radio MSPs, imply that most, if not all, radio MSPs are efficient γ-ray producers. The γ-ray spectra of the pulsars are power law in nature with exponential cutoffs at a few GeV, as has been found with most other pulsars. The MSPs have all been detected as X-ray point sources. Their soft X-ray luminosities of ∼10 ³⁰-10³¹ erg s^-1 are typical of the rare radio MSPs seen in X-rays.

Original language	English (US)
Journal	Astrophysical Journal Letters
Volume	727
Issue number	1 PART II
DOIs	https://doi.org/10.1088/2041-8205/727/1/L16
State	Published - Jan 20 2011

Keywords

Pulsars: general

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/2041-8205/727/1/L16

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Ransom, S. M., Ray, P. S., Camilo, F., Roberts, M. S. E., Çelik, Ö., Wolff, M. T., Cheung, C. C., Kerr, M., Pennucci, T., Decesar, M. E., Cognard, I., Lyne, A. G., Stappers, B. W., Freire, P. C. C., Grove, J. E., Abdo, A. A., Desvignes, G., Donato, D., Ferrara, E. C., ... Ziegler, M. (2011). Three millisecond pulsars in Fermi LAT unassociated bright sources. Astrophysical Journal Letters, 727(1 PART II). https://doi.org/10.1088/2041-8205/727/1/L16

Ransom, SM, Ray, PS, Camilo, F, Roberts, MSE, Çelik, Ö, Wolff, MT, Cheung, CC, Kerr, M, Pennucci, T, Decesar, ME, Cognard, I, Lyne, AG, Stappers, BW, Freire, PCC, Grove, JE, Abdo, AA, Desvignes, G, Donato, D, Ferrara, EC, Gehrels, N, Guillemot, L, Gwon, C, Harding, AK, Johnston, S, Keith, M, Kramer, M, Michelson, PF, Parent, D, Parkinson, PMS, Romani, RW, Smith, DA, Theureau, G, Thompson, DJ, Weltevrede, P, Wood, KS & Ziegler, M 2011, 'Three millisecond pulsars in Fermi LAT unassociated bright sources', Astrophysical Journal Letters, vol. 727, no. 1 PART II. https://doi.org/10.1088/2041-8205/727/1/L16

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title = "Three millisecond pulsars in Fermi LAT unassociated bright sources",

abstract = "We searched for radio pulsars in 25 of the non-variable, unassociated sources in the Fermi LAT Bright Source List with the Green Bank Telescope at 820 MHz. We report the discovery of three radio and γ-ray millisecond pulsars (MSPs) from a high Galactic latitude subset of these sources. All of the pulsars are in binary systems, which would have made them virtually impossible to detect in blind γ-ray pulsation searches. They seem to be relatively normal, nearby (≤2 kpc) MSPs. These observations, in combination with the Fermi detection of γ-rays from other known radio MSPs, imply that most, if not all, radio MSPs are efficient γ-ray producers. The γ-ray spectra of the pulsars are power law in nature with exponential cutoffs at a few GeV, as has been found with most other pulsars. The MSPs have all been detected as X-ray point sources. Their soft X-ray luminosities of ∼10 30-1031 erg s-1 are typical of the rare radio MSPs seen in X-rays.",

keywords = "Pulsars: general",

author = "Ransom, {S. M.} and Ray, {P. S.} and F. Camilo and Roberts, {M. S.E.} and {\"O} {\c C}elik and Wolff, {M. T.} and Cheung, {C. C.} and M. Kerr and T. Pennucci and Decesar, {M. E.} and I. Cognard and Lyne, {A. G.} and Stappers, {B. W.} and Freire, {P. C.C.} and Grove, {J. E.} and Abdo, {A. A.} and G. Desvignes and D. Donato and Ferrara, {E. C.} and N. Gehrels and L. Guillemot and C. Gwon and Harding, {A. K.} and S. Johnston and M. Keith and M. Kramer and Michelson, {P. F.} and D. Parent and Parkinson, {P. M.Saz} and Romani, {R. W.} and Smith, {D. A.} and G. Theureau and Thompson, {D. J.} and P. Weltevrede and Wood, {K. S.} and M. Ziegler",

note = "Funding Information: We acknowledge helpful discussions with Natalie Webb and Lynne Valencic. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under co-operative agreement by Associated Universities, Inc. This work was partially supported by NASA Grant No. NNG09EE57I. The Fermi LAT Collaboration acknowledges support from a number of agencies and institutes for both development and the operation of the LAT as well as scientific data analysis. These include NASA and DOE in the US, CEA/Irfu and IN2P3/CNRS in France, ASI and INFN in Italy, MEXT, KEK, and JAXA in Japan, and the K. A. Wallenberg Foundation, the Swedish Research Council and the National Space Board in Sweden. Additional support from INAF in Italy and CNES in France for",

year = "2011",

month = jan,

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doi = "10.1088/2041-8205/727/1/L16",

language = "English (US)",

volume = "727",

journal = "Astrophysical Journal Letters",

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TY - JOUR

T1 - Three millisecond pulsars in Fermi LAT unassociated bright sources

AU - Ransom, S. M.

AU - Ray, P. S.

AU - Camilo, F.

AU - Roberts, M. S.E.

AU - Çelik, Ö

AU - Wolff, M. T.

AU - Cheung, C. C.

AU - Kerr, M.

AU - Pennucci, T.

AU - Decesar, M. E.

AU - Cognard, I.

AU - Lyne, A. G.

AU - Stappers, B. W.

AU - Freire, P. C.C.

AU - Grove, J. E.

AU - Abdo, A. A.

AU - Desvignes, G.

AU - Donato, D.

AU - Ferrara, E. C.

AU - Gehrels, N.

AU - Guillemot, L.

AU - Gwon, C.

AU - Harding, A. K.

AU - Johnston, S.

AU - Keith, M.

AU - Kramer, M.

AU - Michelson, P. F.

AU - Parent, D.

AU - Parkinson, P. M.Saz

AU - Romani, R. W.

AU - Smith, D. A.

AU - Theureau, G.

AU - Thompson, D. J.

AU - Weltevrede, P.

AU - Wood, K. S.

AU - Ziegler, M.

N1 - Funding Information: We acknowledge helpful discussions with Natalie Webb and Lynne Valencic. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under co-operative agreement by Associated Universities, Inc. This work was partially supported by NASA Grant No. NNG09EE57I. The Fermi LAT Collaboration acknowledges support from a number of agencies and institutes for both development and the operation of the LAT as well as scientific data analysis. These include NASA and DOE in the US, CEA/Irfu and IN2P3/CNRS in France, ASI and INFN in Italy, MEXT, KEK, and JAXA in Japan, and the K. A. Wallenberg Foundation, the Swedish Research Council and the National Space Board in Sweden. Additional support from INAF in Italy and CNES in France for

PY - 2011/1/20

Y1 - 2011/1/20

N2 - We searched for radio pulsars in 25 of the non-variable, unassociated sources in the Fermi LAT Bright Source List with the Green Bank Telescope at 820 MHz. We report the discovery of three radio and γ-ray millisecond pulsars (MSPs) from a high Galactic latitude subset of these sources. All of the pulsars are in binary systems, which would have made them virtually impossible to detect in blind γ-ray pulsation searches. They seem to be relatively normal, nearby (≤2 kpc) MSPs. These observations, in combination with the Fermi detection of γ-rays from other known radio MSPs, imply that most, if not all, radio MSPs are efficient γ-ray producers. The γ-ray spectra of the pulsars are power law in nature with exponential cutoffs at a few GeV, as has been found with most other pulsars. The MSPs have all been detected as X-ray point sources. Their soft X-ray luminosities of ∼10 30-1031 erg s-1 are typical of the rare radio MSPs seen in X-rays.

AB - We searched for radio pulsars in 25 of the non-variable, unassociated sources in the Fermi LAT Bright Source List with the Green Bank Telescope at 820 MHz. We report the discovery of three radio and γ-ray millisecond pulsars (MSPs) from a high Galactic latitude subset of these sources. All of the pulsars are in binary systems, which would have made them virtually impossible to detect in blind γ-ray pulsation searches. They seem to be relatively normal, nearby (≤2 kpc) MSPs. These observations, in combination with the Fermi detection of γ-rays from other known radio MSPs, imply that most, if not all, radio MSPs are efficient γ-ray producers. The γ-ray spectra of the pulsars are power law in nature with exponential cutoffs at a few GeV, as has been found with most other pulsars. The MSPs have all been detected as X-ray point sources. Their soft X-ray luminosities of ∼10 30-1031 erg s-1 are typical of the rare radio MSPs seen in X-rays.

KW - Pulsars: general

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U2 - 10.1088/2041-8205/727/1/L16

DO - 10.1088/2041-8205/727/1/L16

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SN - 2041-8205

VL - 727

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 1 PART II

ER -

Three millisecond pulsars in Fermi LAT unassociated bright sources

Abstract

Keywords

ASJC Scopus subject areas

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