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Article: Nonthermal origin of X-rays from rotation-powered neutron stars
Title | Nonthermal origin of X-rays from rotation-powered neutron stars |
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Authors | |
Keywords | Pulsars: general Radiation mechanisms: nonthermal Radiation mechanisms: thermal X-rays: stars |
Issue Date | 1998 |
Publisher | Institute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205 |
Citation | Astrophysical Journal Letters, 1998, v. 493 n. 1 PART II, p. L35-L38 How to Cite? |
Abstract | We propose that the bulk of X-rays observed in pulsars results from the synchrotron radiation of e ± pairs created in strong pulsar magnetic field near the neutron star surface by curvature photons emitted by charged particles on their way from the outer gap to the neutron star surface. The characteristic energy of these curvature photons is completely determined by the size of the outer gap, which is self-consistently limited by thermal X-rays from the neutron star surface heated by the backflow electrons/positrons from the outer gap. It is this limitation of the outer gap size (potential drop) that constrains the luminosity L x of the synchrotron X-rays emitted by a pulsar to about 0.1% of its spin-down power L sd. © 1998. The American Astronomical Society. All rights reserved. |
Persistent Identifier | http://hdl.handle.net/10722/43216 |
ISSN | 2023 Impact Factor: 8.8 2023 SCImago Journal Rankings: 2.766 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Cheng, KS | en_HK |
dc.contributor.author | Gil, J | en_HK |
dc.contributor.author | Zhang, L | en_HK |
dc.date.accessioned | 2007-03-23T04:41:30Z | - |
dc.date.available | 2007-03-23T04:41:30Z | - |
dc.date.issued | 1998 | en_HK |
dc.identifier.citation | Astrophysical Journal Letters, 1998, v. 493 n. 1 PART II, p. L35-L38 | en_HK |
dc.identifier.issn | 2041-8205 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/43216 | - |
dc.description.abstract | We propose that the bulk of X-rays observed in pulsars results from the synchrotron radiation of e ± pairs created in strong pulsar magnetic field near the neutron star surface by curvature photons emitted by charged particles on their way from the outer gap to the neutron star surface. The characteristic energy of these curvature photons is completely determined by the size of the outer gap, which is self-consistently limited by thermal X-rays from the neutron star surface heated by the backflow electrons/positrons from the outer gap. It is this limitation of the outer gap size (potential drop) that constrains the luminosity L x of the synchrotron X-rays emitted by a pulsar to about 0.1% of its spin-down power L sd. © 1998. The American Astronomical Society. All rights reserved. | en_HK |
dc.format.extent | 102091 bytes | - |
dc.format.extent | 12158 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.format.mimetype | text/plain | - |
dc.language | eng | en_HK |
dc.publisher | Institute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205 | en_HK |
dc.relation.ispartof | Astrophysical Journal Letters | en_HK |
dc.rights | The Astrophysical Journal. Copyright © University of Chicago Press. | en_HK |
dc.subject | Pulsars: general | en_HK |
dc.subject | Radiation mechanisms: nonthermal | en_HK |
dc.subject | Radiation mechanisms: thermal | en_HK |
dc.subject | X-rays: stars | en_HK |
dc.title | Nonthermal origin of X-rays from rotation-powered neutron stars | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0004-637X&volume=493&issue=pt 2&spage=L35&epage=L38&date=1998&atitle=Nonthermal+Origin+of+X-Rays+from+Rotation-powered+Neutron+Stars | en_HK |
dc.identifier.email | Cheng, KS: hrspksc@hkucc.hku.hk | en_HK |
dc.identifier.authority | Cheng, KS=rp00675 | en_HK |
dc.description.nature | published_or_final_version | en_HK |
dc.identifier.doi | 10.1086/311117 | en_HK |
dc.identifier.scopus | eid_2-s2.0-21944453783 | en_HK |
dc.identifier.hkuros | 30079 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-21944453783&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 493 | en_HK |
dc.identifier.issue | 1 PART II | en_HK |
dc.identifier.spage | L35 | en_HK |
dc.identifier.epage | L38 | en_HK |
dc.identifier.isi | WOS:000071810900009 | - |
dc.publisher.place | United Kingdom | en_HK |
dc.identifier.scopusauthorid | Cheng, KS=9745798500 | en_HK |
dc.identifier.scopusauthorid | Gil, J=7201625642 | en_HK |
dc.identifier.scopusauthorid | Zhang, L=38762428100 | en_HK |
dc.identifier.issnl | 2041-8205 | - |