{ "id": "1011.5697", "version": "v2", "published": "2010-11-26T02:49:46.000Z", "updated": "2011-07-04T04:34:12.000Z", "title": "Chandra Observations of the High-Magnetic-Field Radio Pulsar J1718-3718", "authors": [ "W. W. Zhu", "V. M. Kaspi", "M. A. McLaughlin", "G. G. Pavlov", "C. -Y. Ng", "R. N. Manchester", "B. M. Gaensler", "P. M. Woods" ], "comment": "8 pages, 3 tables, 5 figures, published on ApJ", "journal": "The Astrophysical Journal, 734, 44 (2011)", "doi": "10.1088/0004-637X/734/1/44", "categories": [ "astro-ph.HE" ], "abstract": "High-magnetic-field pulsars represent an important class of objects for studying the relationship between magnetars and radio pulsars. Here we report on four Chandra observations of the high-magnetic-field pulsar J1718-3718 ($B=7.4\\times10^{13}$\\,G) taken in 2009 as well as on a re-analysis of 2002 Chandra observations of the region. We also report an improved radio position for this pulsar based on ATCA observations. We detect X-ray pulsations at the pulsar's period in the 2009 data, with pulsed fraction 52%$\\pm$13% in the 0.8--2.0 keV band. We find that the X-ray pulse is aligned with the radio pulse. The data from 2002 and 2009 show consistent spectra and fluxes; a merged overall spectrum is well fit by a blackbody of temperature $186^{+19}_{-18}$\\,eV, slightly higher than predicted by standard cooling models, however, the best-fit neutron star atmosphere model is consistent with standard cooling. We find the bolometric luminosity $L^{\\infty}_{\\rm bb}=4^{+5}_{-2} \\times10^{32}$\\,erg\\,s$^{-1}\\sim0.3\\dot{E}$, for a distance of 4.5 kpc. We compile measurements of the temperatures of all X-ray detected high-$B$ pulsars as well as those of low-$B$ radio pulsars and find evidence for the former being on average hotter than the latter.", "revisions": [ { "version": "v2", "updated": "2011-07-04T04:34:12.000Z" } ], "analyses": { "keywords": [ "chandra observations", "high-magnetic-field radio pulsar", "best-fit neutron star atmosphere model", "detect x-ray pulsations", "high-magnetic-field pulsars represent" ], "tags": [ "journal article" ], "publication": { "journal": "The Astrophysical Journal", "year": 2011, "month": "Jun", "volume": 734, "number": 1, "pages": 44 }, "note": { "typesetting": "TeX", "pages": 8, "language": "en", "license": "arXiv", "status": "editable", "inspire": 880293, "adsabs": "2011ApJ...734...44Z" } } }