Photon and neutrino redshift in the field of braneworld compact stars

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F11%3A%230003870" target="_blank" >RIV/47813059:19240/11:#0003870 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/1475-7516/2011/07/012" target="_blank" >http://dx.doi.org/10.1088/1475-7516/2011/07/012</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1475-7516/2011/07/012" target="_blank" >10.1088/1475-7516/2011/07/012</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Photon and neutrino redshift in the field of braneworld compact stars

Popis výsledku v původním jazyce

We study gravitational redshift of photons and neutrinos radiated by the brane-world neutron or quark stars that are considered in the framework of ale simple model of the internal spacetime with uniform distribution of energy density, and the external spacetime described by the Reissner-Nordstom geometry characterized by the braneworld "tidal" charge b. For negative tidal charges, the external spacetime is of the black-hole type, while for positive tidal charges, the external spacetime can be of both black-hole and naked-singularity type. We consider also extremely compact stars allowing existence of trapped null geodesics in their interior. We assume radiation of photons from the surface at radius R, neutrinos from the whole compact star interior, and their motion along radial null geodesics of the spacetime. In dependency on the compact stars parameters b and R. the photon surface redshift is related to the range of the neutrino internal redshift and the signatures of the tidal char

Název v anglickém jazyce

Photon and neutrino redshift in the field of braneworld compact stars

Popis výsledku anglicky

We study gravitational redshift of photons and neutrinos radiated by the brane-world neutron or quark stars that are considered in the framework of ale simple model of the internal spacetime with uniform distribution of energy density, and the external spacetime described by the Reissner-Nordstom geometry characterized by the braneworld "tidal" charge b. For negative tidal charges, the external spacetime is of the black-hole type, while for positive tidal charges, the external spacetime can be of both black-hole and naked-singularity type. We consider also extremely compact stars allowing existence of trapped null geodesics in their interior. We assume radiation of photons from the surface at radius R, neutrinos from the whole compact star interior, and their motion along radial null geodesics of the spacetime. In dependency on the compact stars parameters b and R. the photon surface redshift is related to the range of the neutrino internal redshift and the signatures of the tidal char

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BE - Teoretická fyzika

OECD FORD obor

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Projekt

<a href="/cs/project/LC06014" target="_blank" >LC06014: Centrum teoretické astrofyziky</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Cosmology and Astroparticle Physics

ISSN

1475-7516

e-ISSN

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Svazek periodika

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Číslo periodika v rámci svazku

7

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

23

Strana od-do

012

Kód UT WoS článku

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EID výsledku v databázi Scopus

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