Linear coasting in cosmology and SNe Ia

被引：28

作者：

Dev, A ^{[1
]}

Sethi, M ^{[1
]}

Lohiya, D ^{[1
]}

机构：

[1] Univ Delhi, Dept Phys & Astrophys, Delhi 110007, India

来源：

PHYSICS LETTERS B | 2001年 / 504卷 / 03期

关键词：

D O I：

10.1016/S0370-2693(01)00292-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A strictly linear evolution of the cosmological expansion scale factor is a characteristic feature in several classes of alternative gravity theories as also in the standard (Big-bang) model with specially chosen equations of state of matter. Such an evolution has no free parameters as far as the classical cosmological tests are concerned and should therefore be easily falsifiable. In this Letter we demonstrate how such models present very good fits to the current supernovae Ia data. We discuss the overall viability of such models. (C) 2001 Published by Elsevier Science B.V.

引用

页码：207 / 212

页数：6

共 17 条

[1]

ALLEN RE, ASTROPH9902042

[2] Type Ia supernovae and the hubble constant [J].

Branch, D .

ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, 1998, 36 :17-55

[3]

Dolgov A., 1982, VERY EARLY UNIVERSE

[4] Higher spin fields and the problem of the cosmological constant [J].

Dolgov, AD .

PHYSICAL REVIEW D, 1997, 55 (10) :5881-5885

[5] ORIGIN OF DEUTERIUM [J].

EPSTEIN, RI ;

LATTIMER, JM ;

SCHRAMM, DN .

NATURE, 1976, 263 (5574) :198-202

[6] COSMOLOGICAL-CONSTANT DAMPING BY UNSTABLE SCALAR FIELDS [J].

FORD, LH .

PHYSICAL REVIEW D, 1987, 35 (08) :2339-2344

[7]

FREEDMAN WL, ASTROPH9801080

[8] A HUBBLE DIAGRAM OF DISTANT TYPE IA SUPERNOVAE [J].

HAMUY, M ;

PHILLIPS, MM ;

MAZA, J ;

SUNTZEFF, NB ;

SCHOMMER, RA ;

AVILES, R .

ASTRONOMICAL JOURNAL, 1995, 109 (01) :1-13

[9] The morphology of type Ia supernovae light curves [J].

Hamuy, M ;

Phillips, MM ;

Suntzeff, NB ;

Schommer, RA ;

Maza, J ;

Smith, RC ;

Lira, P ;

Aviles, R .

ASTRONOMICAL JOURNAL, 1996, 112 (06) :2438-2447

[10]

Lohiya D., NUCLTH9902022

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