4 papers
Recovering CDM Model From a Cosmographic Study
Hassan Amirhashchi, Soroush Amirhashchi
Using the mathematical definitions of deceleration and jerk parameters we obtain a general differential equation for squared Hubble parameter. For a constant jerk, this differentia…
Modelling Joint Lifetimes of Couples by Using Bivariate Phase-type Distributions
Amin Hassan Zadeh, Soroush Amirhashchi
Many insurance products and pension plans provide benefits which are related to couples, and thus under influence of the survival status of two lives. Some studies show the future…
Current Constraints on Anisotropic and Isotropic Dark Energy Models
Hassan Amirhashchi, Soroush Amirhashchi
We use Gaussian processes in combination with MCMC method to place constraints on cosmological parameters of three dark energy models including flat and curved FRW and Bianchi type…
Constraining Bianchi Type I Universe With Type Ia Supernova and H(z) Data
H. Amirhashchi, S. Amirhashchi
We use recent 36 observational Hubble data (OHD) in the redshift range , latest \textgravedbl joint light curves\textacutedbl (JLA) sample, comprised of 740 ty…