File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Electron-positron energy deposition rate from neutrino pair annihilation on the rotation axis of neutron and quark stars

TitleElectron-positron energy deposition rate from neutrino pair annihilation on the rotation axis of neutron and quark stars
Authors
KeywordsDense matter
Equation of state
Neutrinos
Relativistic processes
Stars: rotation
Issue Date2011
PublisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journals/MNR
Citation
Monthly Notices Of The Royal Astronomical Society, 2011, v. 411 n. 3, p. 1503-1524 How to Cite?
AbstractWe investigate the deposition of energy due to the annihilations of neutrinos and antineutrinos on the rotation axis of rotating neutron and quark stars, respectively. The source of the neutrinos is assumed to be a neutrino-cooled accretion disc around the compact object. Under the assumption of the separability of the neutrino null geodesic equation of motion, we obtain the general relativistic expression of the energy deposition rate for arbitrary stationary and axisymmetric space-times. The neutrino trajectories are obtained by using a ray tracing algorithm, based on numerically solving the Hamilton-Jacobi equation for neutrinos by reversing the proper time evolution. We obtain the energy deposition rates for several classes of rotating neutron stars, described by different equations of state of the neutron matter, and for quark stars, described by the MIT bag model equation of state and in the colour-flavour-locked phase, respectively. The electron-positron energy deposition rate on the rotation axis of rotating neutron and quark stars is studied for two accretion disc models (isothermal disc and accretion disc in thermodynamical equilibrium). Rotation and general relativistic effects modify the total annihilation rate of the neutrino-antineutrino pairs on the rotation axis of compact stellar general relativistic objects, as measured by an observer at infinity. The differences in the equations of state for neutron and quark matter also have important effects on the spatial distribution of the energy deposition rate by neutrino-antineutrino annihilation. © 2010 The Authors Monthly Notices of the Royal Astronomical Society © 2010 RAS.
Persistent Identifierhttp://hdl.handle.net/10722/134629
ISSN
2015 Impact Factor: 4.952
2015 SCImago Journal Rankings: 2.806
ISI Accession Number ID
Funding AgencyGrant Number
government of the Hong Kong SARHKU 7011/09P
702507P
Funding Information:

KSC is supported by the GRF grant number HKU 7011/09P of the government of the Hong Kong SAR. The work of TH is supported by the GRF grant number 702507P of the Government of the Hong Kong SAR. ZK is indebted to Katsukai Asano and Gabe Perez-Giz for valuable discussions.

References

 

DC FieldValueLanguage
dc.contributor.authorKovács, Zen_HK
dc.contributor.authorCheng, KSen_HK
dc.contributor.authorHarko, Ten_HK
dc.date.accessioned2011-06-30T06:56:44Z-
dc.date.available2011-06-30T06:56:44Z-
dc.date.issued2011en_HK
dc.identifier.citationMonthly Notices Of The Royal Astronomical Society, 2011, v. 411 n. 3, p. 1503-1524en_HK
dc.identifier.issn0035-8711en_HK
dc.identifier.urihttp://hdl.handle.net/10722/134629-
dc.description.abstractWe investigate the deposition of energy due to the annihilations of neutrinos and antineutrinos on the rotation axis of rotating neutron and quark stars, respectively. The source of the neutrinos is assumed to be a neutrino-cooled accretion disc around the compact object. Under the assumption of the separability of the neutrino null geodesic equation of motion, we obtain the general relativistic expression of the energy deposition rate for arbitrary stationary and axisymmetric space-times. The neutrino trajectories are obtained by using a ray tracing algorithm, based on numerically solving the Hamilton-Jacobi equation for neutrinos by reversing the proper time evolution. We obtain the energy deposition rates for several classes of rotating neutron stars, described by different equations of state of the neutron matter, and for quark stars, described by the MIT bag model equation of state and in the colour-flavour-locked phase, respectively. The electron-positron energy deposition rate on the rotation axis of rotating neutron and quark stars is studied for two accretion disc models (isothermal disc and accretion disc in thermodynamical equilibrium). Rotation and general relativistic effects modify the total annihilation rate of the neutrino-antineutrino pairs on the rotation axis of compact stellar general relativistic objects, as measured by an observer at infinity. The differences in the equations of state for neutron and quark matter also have important effects on the spatial distribution of the energy deposition rate by neutrino-antineutrino annihilation. © 2010 The Authors Monthly Notices of the Royal Astronomical Society © 2010 RAS.en_HK
dc.languageeng-
dc.publisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journals/MNRen_HK
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen_HK
dc.rightsThe definitive version is available at www.blackwell-synergy.com-
dc.subjectDense matteren_HK
dc.subjectEquation of stateen_HK
dc.subjectNeutrinosen_HK
dc.subjectRelativistic processesen_HK
dc.subjectStars: rotationen_HK
dc.titleElectron-positron energy deposition rate from neutrino pair annihilation on the rotation axis of neutron and quark starsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0035-8711&volume=411&issue=3&spage=1503&epage=1524&date=2011&atitle=Electron-positron+energy+deposition+rate+from+neutrino+pair+annihilation+on+the+rotation+axis+of+neutron+and+quark+stars-
dc.identifier.emailCheng, KS: hrspksc@hkucc.hku.hken_HK
dc.identifier.emailHarko, T: harko@hkucc.hku.hken_HK
dc.identifier.authorityCheng, KS=rp00675en_HK
dc.identifier.authorityHarko, T=rp01333en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1111/j.1365-2966.2010.17784.xen_HK
dc.identifier.scopuseid_2-s2.0-79951686057en_HK
dc.identifier.hkuros184976-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79951686057&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume411en_HK
dc.identifier.issue3en_HK
dc.identifier.spage1503en_HK
dc.identifier.epage1524en_HK
dc.identifier.isiWOS:000287486400009-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridKovács, Z=36483148800en_HK
dc.identifier.scopusauthoridCheng, KS=9745798500en_HK
dc.identifier.scopusauthoridHarko, T=7006485783en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats