The Einstein@Home search for radio pulsars and PSR J2007+2722 discovery

Allen, B.; Knispel, B.; Cordes, J. M.; Deneva, J. S.; Hessels, J. W. T.; Anderson, D.; Aulbert, C.; Bock, O.; Brazier, A.; Chatterjee, S.; Demorest, P. B.; Eggenstein, H. B.; Fehrmann, H.; Gotthelf, E. V.; Hammer, D.; Kaspi, V. M.; Kramer, M.; Lyne, A. G.; Machenschalk, B.; McLaughlin, M. A.; Messenger, C.; Pletsch, H.; Ransom, S. M.; Stairs, I. H.; Stappers, B. W.; Bhat, N. D. R.; Bogdanov, S.; Camilo, F.; Champion, D. J.; Crawford, F.; Desvignes, G.; Freire, P. C. C.; Heald, G.; Jenet, F. A.; Lazarus, P.; Lee, K. J.; van Leeuwen, J.; Lynch, R.; Papa, M. A.; Prix, R.; Rosen, R.; Scholz, P.; Siemens, X.; Stovall, K.; Venkataraman, A.; Zhu, W.

doi:10.1088/0004-637X/773/2/91

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The Einstein@Home search for radio pulsars and PSR J2007+2722 discovery

MPG-Autoren

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Allen, B.
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons1452

Knispel, B.
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons40519

Aulbert, C.
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons40521

Bock, O.
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

Eggenstein, H. B.
Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons40523

Fehrmann, H.
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons40529

Machenschalk, B.
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons42125

Messenger, C.
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons40533

Pletsch, H.
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons20662

Papa, M. A.
Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons40534

Prix, R.
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Zitation

Allen, B., Knispel, B., Cordes, J. M., Deneva, J. S., Hessels, J. W. T., Anderson, D., et al. (2013). The Einstein@Home search for radio pulsars and PSR J2007+2722 discovery. Astrophysical Journal, 773(2): 91. doi:10.1088/0004-637X/773/2/91.

Zitierlink: https://hdl.handle.net/11858/00-001M-0000-000E-E955-A

Zusammenfassung

Einstein@Home aggregates the computer power of hundreds of thousands of volunteers from 192 countries, to search for new neutron stars using data from electromagnetic and gravitational-wave detectors. This paper presents a detailed description of the search for new radio pulsars using PALFA survey data from the Arecibo Observatory. The enormous computing power allows this search to cover a new region of parameter space; it can detect pulsars in binary systems with orbital periods as short as 11 min. We also describe the first Einstein@Home discovery, the 40.8 Hz isolated pulsar PSR J2007+2722, and provide a full timing model. PSR J2007+2722's pulse profile is remarkably wide with emission over almost the entire spin period. This neutron star is most likely a disrupted recycled pulsar, about as old as its characteristic spin-down age of 404 Myr. However there is a small chance that it was born recently, with a low magnetic field. If so, upper limits on the X-ray flux suggest but can not prove that PSR J2007+2722 is at least ~500 kyr old. In the future, we expect that the massive computing power provided by volunteers should enable many additional radio pulsar discoveries.