naa a22 4500 510767907 CHVBK 20180411083203.0 cr unu---uuuuu 180411e20131001xx s 000 0 eng 10.1007/s12043-013-0593-5 doi (NATIONALLICENCE)springer-10.1007/s12043-013-0593-5 Observational constraints on modified Chaplygin gas in Horava-Lifshitz gravity with dark radiation [Elektronische Daten] [B PAUL, P THAKUR, M VERMA] Cosmological models with modified Chaplygin gas (MCG) in the framework of Horava-Lifshitz (HL) theory of gravity, both with and without detailed balance, are obtained. The equation of state (EOS) for a MCG contains three unknown parameters namely, A, α, B. The allowed values of some of these parameters of the EOS are determined using the recent astrophysical and cosmological observational data. Using observational data from H(z)-z, baryon acoustic oscillation (BAO) peak parameter and cosmic microwave background (CMB) shift parameter we study cosmologies in detailed-balance and beyond detailed-balance scenario. In this paper we take up the beyond detailed-balance scenario in totality and contribution of dark radiation in detailed-balance scenario on the parameters of the EOS. We explore the effect of dark radiation on the whole range of the effective neutrino parameter (ΔN ν ) to constrain matter contributing parameter B in both the detailed-balance and the beyond detailed-balance scenarios. It has been observed that greater the dark radiation less the matter contribution in the MCG in both the scenario considered here. In order to check the validity of beyond detailed-balance scenario we plot supernovae magnitudes (μ) with red-shift of Union2 data and then the variation of state parameter with redshift is studied. It is noted that beyond detailed-balance scenario is suitable for cosmological model in HL gravity with MCG. Indian Academy of Sciences, 2013 Modified Chaplygin gas nationallicence Horava-Lifshitz gravity nationallicence dark energy nationallicence PAUL B. Physics Department, North Bengal University, 734 013, Darjeeling, India aut THAKUR P. Physics Department, Alipurduar College, 736 122, Jalpaiguri, India aut VERMA M. Physics Department, Lucknow University, 226 007, Lucknow, India aut Pramana Springer India 81/4(2013-10-01), 691-718 0304-4289 81:4<691 2013 81 12043 https://doi.org/10.1007/s12043-013-0593-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12043-013-0593-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- PAUL B. Physics Department, North Bengal University, 734 013, Darjeeling, India aut NATIONALLICENCE 700 1- THAKUR P. Physics Department, Alipurduar College, 736 122, Jalpaiguri, India aut NATIONALLICENCE 700 1- VERMA M. Physics Department, Lucknow University, 226 007, Lucknow, India aut NATIONALLICENCE 773 0- Pramana Springer India 81/4(2013-10-01), 691-718 0304-4289 81:4<691 2013 81 12043 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer