LINEAR DARK ENERGY EQUATION OF STATE REVEALED BY SUPERNOVAE?

被引：4

作者：

Salzano, Vincenzo ^{[1
]}

Wang, Yun ^{[2
]}

Sendra, Irene ^{[1
]}

Lazkoz, Ruth ^{[1
]}

机构：

[1] Euskal Herriko Unibertsitatea, Zientzia Teknol Fak, Fis Teorikoaren Zientziaren Hist Saila, Bilbao 48080, Spain

[2] Univ Oklahoma, Homer L Dodge Dept Phys & Astron, Norman, OK 73019 USA

来源：

MODERN PHYSICS LETTERS A | 2014年 / 29卷 / 02期

关键词：

Dark energy theory; supernova type Ia - standard candles; COSMOLOGICAL CONSTANT; EXTENDED THEORIES; DYNAMICS; LAMBDA; PROBE;

D O I：

10.1142/S0217732314500084

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper, we propose a test to detect the linearity of the dark energy equation of state, and apply it to the SNLS3 Type Ia. Supernova (SN Ia) data set. We find that: (a) current SN Ia data are well described by a dark energy equation of state linear in the cosmic scale factor a, at least up to a redshift z =1, independent of the pivot points chosen for the linear relation; (b) there is no significant: evidence of any deviation from linearity. This apparent linearity may reflect the limit of dark energy information extractable from current SN Ia. data.

引用

页数：10

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