Details
| Original language | English |
|---|---|
| Article number | 99 |
| Journal | Astrophysical Journal |
| Volume | 854 |
| Issue number | 2 |
| Publication status | Published - 20 Feb 2018 |
Abstract
We report on the analysis of 13 gamma-ray pulsars discovered in the Einstein@Home blind search survey using Fermi Large Area Telescope (LAT) Pass 8 data. The 13 new gamma-ray pulsars were discovered by searching 118 unassociated LAT sources from the third LAT source catalog (3FGL), selected using the Gaussian Mixture Model machine-learning algorithm on the basis of their gamma-ray emission properties being suggestive of pulsar magnetospheric emission. The new gamma-ray pulsars have pulse profiles and spectral properties similar to those of previously detected young gamma-ray pulsars. Follow-up radio observations have revealed faint radio pulsations from two of the newly discovered pulsars and enabled us to derive upper limits on the radio emission from the others, demonstrating that they are likely radio-quiet gamma-ray pulsars. We also present results from modeling the gamma-ray pulse profiles and radio profiles, if available, using different geometric emission models of pulsars. The high discovery rate of this survey, despite the increasing difficulty of blind pulsar searches in gamma rays, suggests that new systematic surveys such as presented in this article should be continued when new LAT source catalogs become available.
Keywords
- gamma rays: stars, pulsars: individual (PSR J0002+6216, PSR J0631+0646, PSR J1624-4041, PSR J2017+3625)
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. 854, No. 2, 99, 20.02.2018.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The Einstein@Home Gamma-ray Pulsar Survey. II. Source Selection, Spectral Analysis, and Multiwavelength Follow-up
AU - Wu, J.
AU - Clark, C. J.
AU - Pletsch, H. J.
AU - Guillemot, L.
AU - Johnson, T. J.
AU - Torne, P.
AU - Champion, D. J.
AU - Deneva, J.
AU - Ray, P. S.
AU - Salvetti, D.
AU - Kramer, M.
AU - Aulbert, C.
AU - Beer, C.
AU - Bhattacharyya, B.
AU - Bock, O.
AU - Camilo, F.
AU - Cognard, I.
AU - Cuéllar, A.
AU - Eggenstein, H. B.
AU - Fehrmann, H.
AU - Ferrara, E. C.
AU - Kerr, M.
AU - Machenschalk, B.
AU - Ransom, S. M.
AU - Sanpa-Arsa, S.
AU - Wood, K.
N1 - Publisher Copyright: © 2018. The American Astronomical Society. All rights reserved..
PY - 2018/2/20
Y1 - 2018/2/20
N2 - We report on the analysis of 13 gamma-ray pulsars discovered in the Einstein@Home blind search survey using Fermi Large Area Telescope (LAT) Pass 8 data. The 13 new gamma-ray pulsars were discovered by searching 118 unassociated LAT sources from the third LAT source catalog (3FGL), selected using the Gaussian Mixture Model machine-learning algorithm on the basis of their gamma-ray emission properties being suggestive of pulsar magnetospheric emission. The new gamma-ray pulsars have pulse profiles and spectral properties similar to those of previously detected young gamma-ray pulsars. Follow-up radio observations have revealed faint radio pulsations from two of the newly discovered pulsars and enabled us to derive upper limits on the radio emission from the others, demonstrating that they are likely radio-quiet gamma-ray pulsars. We also present results from modeling the gamma-ray pulse profiles and radio profiles, if available, using different geometric emission models of pulsars. The high discovery rate of this survey, despite the increasing difficulty of blind pulsar searches in gamma rays, suggests that new systematic surveys such as presented in this article should be continued when new LAT source catalogs become available.
AB - We report on the analysis of 13 gamma-ray pulsars discovered in the Einstein@Home blind search survey using Fermi Large Area Telescope (LAT) Pass 8 data. The 13 new gamma-ray pulsars were discovered by searching 118 unassociated LAT sources from the third LAT source catalog (3FGL), selected using the Gaussian Mixture Model machine-learning algorithm on the basis of their gamma-ray emission properties being suggestive of pulsar magnetospheric emission. The new gamma-ray pulsars have pulse profiles and spectral properties similar to those of previously detected young gamma-ray pulsars. Follow-up radio observations have revealed faint radio pulsations from two of the newly discovered pulsars and enabled us to derive upper limits on the radio emission from the others, demonstrating that they are likely radio-quiet gamma-ray pulsars. We also present results from modeling the gamma-ray pulse profiles and radio profiles, if available, using different geometric emission models of pulsars. The high discovery rate of this survey, despite the increasing difficulty of blind pulsar searches in gamma rays, suggests that new systematic surveys such as presented in this article should be continued when new LAT source catalogs become available.
KW - gamma rays: stars
KW - pulsars: individual (PSR J0002+6216, PSR J0631+0646, PSR J1624-4041, PSR J2017+3625)
UR - http://www.scopus.com/inward/record.url?scp=85042719313&partnerID=8YFLogxK
U2 - 10.3847/1538-4357/aaa411
DO - 10.3847/1538-4357/aaa411
M3 - Article
AN - SCOPUS:85042719313
VL - 854
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2
M1 - 99
ER -