Details
| Original language | English |
|---|---|
| Article number | 106 |
| Number of pages | 19 |
| Journal | Astrophysical Journal |
| Volume | 834 |
| Issue number | 2 |
| Early online date | 5 Jan 2017 |
| Publication status | Published - 10 Jan 2017 |
Abstract
We report on the results of a recent blind search survey for gamma-ray pulsars in Fermi Large Area Telescope (LAT) data being carried out on the distributed volunteer computing system, Einstein@Home. The survey has searched for pulsations in 118 unidentified pulsar-like sources, requiring about 10,000 years of CPU core time. In total, this survey has resulted in the discovery of 17 new gamma-ray pulsars, of which 13 are newly reported in this work, and an accompanying paper. These pulsars are all young, isolated pulsars with characteristic ages between 12 kyr and 2 Myr, and spin-down powers between 1034 and 4 ×1036 ergs-1. Two of these are the slowest spinning gamma-ray pulsars yet known. One pulsar experienced a very large glitch δ∫/∫ ≈ 3.5 × 10-6 during the Fermi mission. In this, the first of two associated papers, we describe the search scheme used in this survey, and estimate the sensitivity of our search to pulsations in unidentified Fermi-LAT sources. One such estimate results in an upper limit of 57% for the fraction of pulsed emission from the gamma-ray source associated with the Cas A supernova remnant, constraining the pulsed gamma-ray photon flux that can be produced by the neutron star at its center. We also present the results of precise timing analyses for each of the newly detected pulsars.
Keywords
- gamma-rays: stars, pulsars: individual (PSR J0359+5414, PSR J1057-5851, PSR J1350-6225, PSR J1827-1446, PSR J1844-0346)
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Astronomy and Astrophysics
- Earth and Planetary Sciences(all)
- Space and Planetary Science
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In: Astrophysical Journal, Vol. 834, No. 2, 106, 10.01.2017.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The Einstein@Home Gamma-ray Pulsar Survey
T2 - I. Search Methods, Sensitivity and Discovery of New Young Gamma-ray Pulsars
AU - Clark, C. J.
AU - Wu, J.
AU - Pletsch, H. J.
AU - Guillemot, L.
AU - Allen, B.
AU - Aulbert, C.
AU - Beer, C.
AU - Bock, O.
AU - Cuéllar, A.
AU - Eggenstein, H. B.
AU - Fehrmann, H.
AU - Kramer, M.
AU - Machenschalk, B.
AU - Nieder, L.
N1 - Funding Information: This work was supported by the Max-Planck-Gesellschaft (MPG), by the Deutsche Forschungsgemeinschaft (DFG) through an Emmy Noether research grant PL 710/1-1 (PI: Holger J. Pletsch), and by NSF award 1104902.
PY - 2017/1/10
Y1 - 2017/1/10
N2 - We report on the results of a recent blind search survey for gamma-ray pulsars in Fermi Large Area Telescope (LAT) data being carried out on the distributed volunteer computing system, Einstein@Home. The survey has searched for pulsations in 118 unidentified pulsar-like sources, requiring about 10,000 years of CPU core time. In total, this survey has resulted in the discovery of 17 new gamma-ray pulsars, of which 13 are newly reported in this work, and an accompanying paper. These pulsars are all young, isolated pulsars with characteristic ages between 12 kyr and 2 Myr, and spin-down powers between 1034 and 4 ×1036 ergs-1. Two of these are the slowest spinning gamma-ray pulsars yet known. One pulsar experienced a very large glitch δ∫/∫ ≈ 3.5 × 10-6 during the Fermi mission. In this, the first of two associated papers, we describe the search scheme used in this survey, and estimate the sensitivity of our search to pulsations in unidentified Fermi-LAT sources. One such estimate results in an upper limit of 57% for the fraction of pulsed emission from the gamma-ray source associated with the Cas A supernova remnant, constraining the pulsed gamma-ray photon flux that can be produced by the neutron star at its center. We also present the results of precise timing analyses for each of the newly detected pulsars.
AB - We report on the results of a recent blind search survey for gamma-ray pulsars in Fermi Large Area Telescope (LAT) data being carried out on the distributed volunteer computing system, Einstein@Home. The survey has searched for pulsations in 118 unidentified pulsar-like sources, requiring about 10,000 years of CPU core time. In total, this survey has resulted in the discovery of 17 new gamma-ray pulsars, of which 13 are newly reported in this work, and an accompanying paper. These pulsars are all young, isolated pulsars with characteristic ages between 12 kyr and 2 Myr, and spin-down powers between 1034 and 4 ×1036 ergs-1. Two of these are the slowest spinning gamma-ray pulsars yet known. One pulsar experienced a very large glitch δ∫/∫ ≈ 3.5 × 10-6 during the Fermi mission. In this, the first of two associated papers, we describe the search scheme used in this survey, and estimate the sensitivity of our search to pulsations in unidentified Fermi-LAT sources. One such estimate results in an upper limit of 57% for the fraction of pulsed emission from the gamma-ray source associated with the Cas A supernova remnant, constraining the pulsed gamma-ray photon flux that can be produced by the neutron star at its center. We also present the results of precise timing analyses for each of the newly detected pulsars.
KW - gamma-rays: stars
KW - pulsars: individual (PSR J0359+5414, PSR J1057-5851, PSR J1350-6225, PSR J1827-1446, PSR J1844-0346)
UR - http://www.scopus.com/inward/record.url?scp=85010031097&partnerID=8YFLogxK
U2 - 10.48550/arXiv.1611.01015
DO - 10.48550/arXiv.1611.01015
M3 - Article
AN - SCOPUS:85010031097
VL - 834
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2
M1 - 106
ER -