An independent estimate of the cosmological distance to GRB970228 and GRB970508

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dc.creatorLipunov, V. M.
dc.creatorPostnov, K. A.
dc.creatorProkhorov, M. E.
dc.date1997-03-27
dc.date1997-05-13
dc.date.accessioned2026-07-07T08:58:26Z
dc.date.available2026-07-07T08:58:26Z
dc.descriptionAssuming binary neutron star mergings as a standard-candle model for GRBs, an independent estimate is obtained for the redshift of GRB970228 and GRB970508 with optical counterparts, using mean statistical properties of GRBs observed by BATSE. We derive z=0.7\pm 0.1 and z=1.9\pm 0.1 for GRB970228 and GRB970508 respectively, depending on the power-law index of the GRB spectrum s=-1.1\pm 0.3 and the value of the redshift of the initial star formation z_*=3-10 in a flat Ω=1 Universe with a cosmological term Λ=0.7.
dc.descriptionLaTeX, A&A style, 3 pages, includes 2 postscript figures
dc.identifierhttps://arxiv.org/abs/astro-ph/9703181
dc.identifierhttp://arxiv.org/abs/astro-ph/9703181
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/147323
dc.subjectAstrophysics
dc.titleAn independent estimate of the cosmological distance to GRB970228 and GRB970508
dc.typetext

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