Fermi large area telescope observations of PSR J1836+5925
2010 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 712, no 2, 1209-1218 p.Article in journal (Refereed) Published
The discovery of the gamma-ray pulsar PSR J1836+5925, powering the formerly unidentified EGRET source 3EG J1835+5918, was one of the early accomplishments of the Fermi Large Area Telescope (LAT). Sitting 25 degrees off the Galactic plane, PSR J1836+5925 is a 173 ms pulsar with a characteristic age of 1.8 million years, a spindown luminosity of 1.1 x 10(34) erg s(-1), and a large off-peak (OP) emission component, making it quite unusual among the known gamma-ray pulsar population. We present an analysis of one year of LAT data, including an updated timing solution, detailed spectral results, and a long-term light curve showing no indication of variability. No evidence for a surrounding pulsar wind nebula is seen and the spectral characteristics of the OP emission indicate it is likely magnetospheric. Analysis of recent XMM-Newton observations of the X-ray counterpart yields a detailed characterization of its spectrum, which, like Geminga, is consistent with that of a neutron star showing evidence for both magnetospheric and thermal emission.
Place, publisher, year, edition, pages
2010. Vol. 712, no 2, 1209-1218 p.
gamma rays: general, pulsars: general, pulsars: individual (PSR J1836+5925)
Astronomy, Astrophysics and Cosmology
IdentifiersURN: urn:nbn:se:kth:diva-28660DOI: 10.1088/0004-637X/712/2/1209ISI: 000275594600037ScopusID: 2-s2.0-77950238608OAI: oai:DiVA.org:kth-28660DiVA: diva2:391392
FunderKnut and Alice Wallenberg FoundationSwedish Research Council
QC 201101252011-01-252011-01-192011-01-25Bibliographically approved