Cosmological Model Parameter Determination from Satellite‐acquired Supernova Apparent Magnitude versus Redshift Data | Zendy

Silviu Podariu | Zendy; P. Nugent | Zendy; Bharat Ratra | Zendy

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Cosmological Model Parameter Determination from Satellite‐acquired Supernova Apparent Magnitude versus Redshift Data

Author(s) -

Silviu Podariu,

P. Nugent,

Bharat Ratra

Publication year - 2001

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/320639

Subject(s) - physics , magnitude (astronomy) , redshift , supernova , cosmological constant , constant (computer programming) , astrophysics , satellite , cosmology , lambda cdm model , dark energy , theoretical physics , astronomy , galaxy , computer science , programming language

We examine the constraints that satellite-acquired Type Ia and IIP supernovaapparent magnitude versus redshift data will place on cosmological modelparameters in models with and without a constant or time-variable cosmologicalconstant $\Lambda$. High-quality data which could be acquired in the nearfuture will result in tight constraints on these parameters. For example, ifall other parameters of a spatially-flat model with a constant $\Lambda$ areknown, the supernova data should constrain the non-relativistic matter densityparameter $\Omega_0$ to better than 1% (2%, 0.5%) at 1$\sigma$ with neutral(worst case, best case) assumptions about data quality.Comment: 16 pages, 6 figure

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