Contact
Room 325
P.O.Box: 11155-9161
Tel: +98 21 6616 4531
Fax: +98 21 6602 2711
E-Mail: rahvar@sharif.edu
Personal Page: http://sina.sharif.edu/~rahvar
Group Page: http://physics.sharif.edu/~cosmology

 

Research Interests

Astrophysics and Cosmology.

 

Research Plan

1. Extra-Solar Planet Observation: The gravitational Microlensing method has the advantage of detecting the earth type planets beyond the snow-line. We are doing the follow-up observations of the ongoing microlensing events and expect to have enough statistics after few years to measure the mass function of planets. This is an important factor for testing the planet formation scenarios. One of the interesting aspects of the extra solar planet search is finding an earth-like planet at the habitable zone of the parent star. Possibility of finding life beyond the earth!
2. Dark Matter and Dark Energy: I am interested in to the alternative models of the dark matter scenarios as the modification of the gravity or the dynamics.

 

Selected Publications

• An Inverse f(R) Gravitation for Cosmic Speed up, and Dark Energy Equivalent, S. Rahvar and Y. Sobouti, Mod. Phys. Letter A 23 (2008),1929

• Planetary microlensing signals from the orbital motion of the source star around the common barycentre, S. Rahvar and M. Dominik MNRAS 392 (2009) 1193

• Structure formation in f(R) gravity: a distinguishing probe between the dark energy and modified gravity, S. Baghram and S. Rahvar, JCAP 12(2010) 008

• Frequency of Solar-like Systems and of Ice and Gas Giants Beyond the Snow Line from High-magnification Microlensing Events in 2005-2008, A. Gould et al, ApJ 720(2010) 1073

• Compact object detection in self-lensing binary systems with a main-sequence star, S. Rahvar, A. Mehrabi and M. Dominik, MNRAS 410 (2011) 912