Details
| Original language | English |
|---|---|
| Article number | L20 |
| Number of pages | 6 |
| Journal | Astrophysical Journal Letters |
| Volume | 755 |
| Issue number | 1 |
| Early online date | 27 Jul 2012 |
| Publication status | Published - 10 Aug 2012 |
Abstract
We report the discovery of PSR J1838-0537, a gamma-ray pulsar found through a blind search of data from the Fermi Large Area Telescope (LAT). The pulsar has a spin frequency of 6.9Hz and a frequency derivative of -2.2 × 10 -11Hz s-1, implying a young characteristic age of 4970yr and a large spin-down power of 5.9 × 1036ergs-1. Follow-up observations with radio telescopes detected no pulsations; thus PSR J1838-0537 appears radio-quiet as viewed from Earth. In 2009 September the pulsar suffered the largest glitch so far seen in any gamma-ray-only pulsar, causing a relative increase in spin frequency of about 5.5 × 10 -6. After the glitch, during a putative recovery period, the timing analysis is complicated by the sparsity of the LAT photon data, the weakness of the pulsations, and the reduction in average exposure from a coincidental, contemporaneous change in LAT's sky-survey observing pattern. The pulsar's sky position is coincident with the spatially extended TeV source HESS J1841-055 detected by the High Energy Stereoscopic System (H.E.S.S.). The inferred energetics suggest that HESS J1841-055 contains a pulsar wind nebula powered by the pulsar.
Keywords
- gamma rays: stars, ISM: individual objects (HESS J1841-055), pulsars: individual (PSR J1838-0537)
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 Letters, Vol. 755, No. 1, L20, 10.08.2012.
Research output: Contribution to journal › Review article › Research › peer review
}
TY - JOUR
T1 - PSR J1838-0537
T2 - Discovery of a young, energetic gamma-ray pulsar
AU - Pletsch, H. J.
AU - Guillemot, L.
AU - Allen, B.
AU - Kramer, M.
AU - Aulbert, C.
AU - Fehrmann, H.
AU - Baring, M. G.
AU - Camilo, F.
AU - Caraveo, P. A.
AU - Grove, J. E.
AU - Kerr, M.
AU - Marelli, M.
AU - Ransom, S. M.
AU - Ray, P. S.
AU - Saz Parkinson, P. M.
N1 - We thank M.-H. Grondin, M. Lemoine-Goumard, and J. Mehault for helpful discussions on HESS J1841 ´ −055. This work was partly supported by the Max-Planck-Gesellschaft and by U.S. National Science Foundation grants 0970074 and 1104902. The Fermi LAT Collaboration acknowledges support from several agencies and institutes for both development and the operation of LAT as well as scientific data analysis. These include NASA and DOE in the United States, 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 science analysis during the operations phase is also gratefully acknowledged.
PY - 2012/8/10
Y1 - 2012/8/10
N2 - We report the discovery of PSR J1838-0537, a gamma-ray pulsar found through a blind search of data from the Fermi Large Area Telescope (LAT). The pulsar has a spin frequency of 6.9Hz and a frequency derivative of -2.2 × 10 -11Hz s-1, implying a young characteristic age of 4970yr and a large spin-down power of 5.9 × 1036ergs-1. Follow-up observations with radio telescopes detected no pulsations; thus PSR J1838-0537 appears radio-quiet as viewed from Earth. In 2009 September the pulsar suffered the largest glitch so far seen in any gamma-ray-only pulsar, causing a relative increase in spin frequency of about 5.5 × 10 -6. After the glitch, during a putative recovery period, the timing analysis is complicated by the sparsity of the LAT photon data, the weakness of the pulsations, and the reduction in average exposure from a coincidental, contemporaneous change in LAT's sky-survey observing pattern. The pulsar's sky position is coincident with the spatially extended TeV source HESS J1841-055 detected by the High Energy Stereoscopic System (H.E.S.S.). The inferred energetics suggest that HESS J1841-055 contains a pulsar wind nebula powered by the pulsar.
AB - We report the discovery of PSR J1838-0537, a gamma-ray pulsar found through a blind search of data from the Fermi Large Area Telescope (LAT). The pulsar has a spin frequency of 6.9Hz and a frequency derivative of -2.2 × 10 -11Hz s-1, implying a young characteristic age of 4970yr and a large spin-down power of 5.9 × 1036ergs-1. Follow-up observations with radio telescopes detected no pulsations; thus PSR J1838-0537 appears radio-quiet as viewed from Earth. In 2009 September the pulsar suffered the largest glitch so far seen in any gamma-ray-only pulsar, causing a relative increase in spin frequency of about 5.5 × 10 -6. After the glitch, during a putative recovery period, the timing analysis is complicated by the sparsity of the LAT photon data, the weakness of the pulsations, and the reduction in average exposure from a coincidental, contemporaneous change in LAT's sky-survey observing pattern. The pulsar's sky position is coincident with the spatially extended TeV source HESS J1841-055 detected by the High Energy Stereoscopic System (H.E.S.S.). The inferred energetics suggest that HESS J1841-055 contains a pulsar wind nebula powered by the pulsar.
KW - gamma rays: stars
KW - ISM: individual objects (HESS J1841-055)
KW - pulsars: individual (PSR J1838-0537)
UR - http://www.scopus.com/inward/record.url?scp=84864482156&partnerID=8YFLogxK
U2 - 10.48550/arXiv.1207.5333
DO - 10.48550/arXiv.1207.5333
M3 - Review article
AN - SCOPUS:84864482156
VL - 755
JO - Astrophysical Journal Letters
JF - Astrophysical Journal Letters
SN - 2041-8205
IS - 1
M1 - L20
ER -