GRAVITATIONAL LENSING CONSTRAINT ON THE COSMIC EQUATION OF STATE
نویسندگان
چکیده
منابع مشابه
Gravitational lensing constraint on the cosmic equation of state
Recent redshift-distance measurements of Type Ia supernovae at cosmological distances suggest that two-third of the energy density of the universe is dominated by dark energy component with an effective negative pressure. This dark energy component is described by the equation of state px = wρx (w ≥ −1). We use gravitational lensing statistics to constrain the equation of state of this dark ene...
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A possible method to reconstruct the cosmic equation of state using strong gravitational lensing systems is proposed. The feasibility of the method is investigated by carrying out the reconstruction on the basis of a simple Monte-Carlo simulation. We show that the method can work and that the cosmic equation of state w(z) can be determined within errors of ∆w ∼ ±0.1 – ±0.2 when a sufficiently l...
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ژورنال
عنوان ژورنال: International Journal of Modern Physics D
سال: 2003
ISSN: 0218-2718,1793-6594
DOI: 10.1142/s0218271803003062