DISCOVERY OF NINE GAMMA-RAY PULSARS IN FERMI LARGE AREA TELESCOPE DATA USING A NEW BLIND SEARCH METHOD

被引：90

作者：

Pletsch, H. J. ^{[1
,3
]}

Guillemot, L. ^{[4
]}

Allen, B. ^{[1
,2
,3
]}

Kramer, M. ^{[4
,5
]}

Aulbert, C. ^{[1
,3
]}

Fehrmann, H. ^{[1
,3
]}

Ray, P. S. ^{[6
]}

Barr, E. D. ^{[4
]}

Belfiore, A. ^{[7
,8
,9
,10
]}

Camilo, F. ^{[11
]}

Caraveo, P. A. ^{[10
]}

Celik, Oe. ^{[12
,13
,14
,15
]}

Champion, D. J. ^{[4
]}

Dormody, M. ^{[7
,8
]}

Eatough, R. P. ^{[4
]}

Ferrara, E. C. ^{[12
]}

Freire, P. C. C. ^{[4
]}

Hessels, J. W. T. ^{[16
,17
]}

Keith, M. ^{[18
]}

Kerr, M. ^{[19
,20
]}

de Luca, A. ^{[10
,21
]}

Lyne, A. G. ^{[5
]}

Marelli, M. ^{[10
]}

McLaughlin, M. A. ^{[22
]}

Parent, D. ^{[23
]}

Ransom, S. M. ^{[24
]}

Razzano, M. ^{[25
]}

Reich, W. ^{[4
]}

Parkinson, P. M. Saz ^{[7
,8
]}

Stappers, B. W. ^{[5
]}

Wolff, M. T. ^{[6
]}

机构：

[1] Albert Einstein Inst, Max Planck Inst Gravitat Phys, D-30167 Hannover, Germany

[2] Univ Wisconsin, Dept Phys, Milwaukee, WI 53211 USA

[3] Leibniz Univ Hannover, Inst Gravitat Phys, D-30167 Hannover, Germany

[4] Max Planck Inst Radioastron, D-53121 Bonn, Germany

[5] Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England

[6] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA

[7] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Dept Phys, Santa Cruz, CA 95064 USA

[8] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA

[9] Univ Pavia, Dipartimento Fis Nucl & Teor, I-27100 Pavia, Italy

[10] INAF Ist Astrofis Spaziale & Fis Cosm, I-20133 Milan, Italy

[11] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA

[12] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[13] Ctr Res & Explorat Space Sci & Technol CRESST, Greenbelt, MD 20771 USA

[14] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA

[15] Univ Maryland Baltimore Cty, Ctr Space Sci & Technol, Baltimore, MD 21250 USA

[16] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1090 GE Amsterdam, Netherlands

[17] Netherlands Inst Radio Astron ASTRON, NL-7990 AA Dwingeloo, Netherlands

[18] Australia Telescope Natl Facil, CSIRO Astron & Space Sci, Epping, NSW 1710, Australia

[19] Stanford Univ, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA

[20] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA

[21] Ist Univ Studi Super IUSS, I-27100 Pavia, Italy

[22] W Virginia Univ, Dept Phys, Morgantown, WV 26506 USA

[23] George Mason Univ, Ctr Earth Observing & Space Res, Coll Sci, Fairfax, VA 22030 USA

[24] Natl Radio Astron Observ NRAO, Charlottesville, VA 22903 USA

[25] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy

来源：

ASTROPHYSICAL JOURNAL | 2012年 / 744卷 / 02期

基金：

美国国家科学基金会;

关键词：

gamma rays: stars; pulsars: general; pulsars: individual; GRAVITATIONAL-WAVES; MILLISECOND PULSARS; FREQUENCY SEARCHES; CATALOG; ATLAS; SKY;

D O I：

10.1088/0004-637X/744/2/105

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the discovery of nine previously unknown gamma-ray pulsars in a blind search of data from the Fermi Large Area Telescope (LAT). The pulsars were found with a novel hierarchical search method originally developed for detecting continuous gravitational waves from rapidly rotating neutron stars. Designed to find isolated pulsars spinning at up to kHz frequencies, the new method is computationally efficient and incorporates several advances, including a metric-based gridding of the search parameter space (frequency, frequency derivative, and sky location) and the use of photon probability weights. The nine pulsars have spin frequencies between 3 and 12 Hz, and characteristic ages ranging from 17 kyr to 3 Myr. Two of them, PSRs J1803-2149 and J2111+4606, are young and energetic Galactic-plane pulsars (spin-down power above 6 x 10(35) erg s(-1) and ages below 100 kyr). The seven remaining pulsars, PSRs J0106+4855, J0622+3749, J1620-4927, J1746-3239, J2028+3332, J2030+4415, and J2139+4716, are older and less energetic; two of them are located at higher Galactic latitudes (|b| > 10 degrees). PSR J0106+4855 has the largest characteristic age (3 Myr) and the smallest surface magnetic field (2 x 10(11) G) of all LAT blind-search pulsars. PSR J2139+4716 has the lowest spin-down power (3 x 10(33) erg s(-1)) among all non-recycled gamma-ray pulsars ever found. Despite extensivemulti-frequency observations, only PSR J0106+4855 has detectable pulsations in the radio band. The other eight pulsars belong to the increasing population of radio-quiet gamma-ray pulsars.

引用

页数：20

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