15147

13622

كارشناسي ارشد

ذرات بنيادي

اصفهان : دانشگاه صنعتي اصفهان

1398

هفده، 86ص.: مصور، جدول، نمودار

1398/07/15

كتابنامه

فيزيك

فيزيك

1398/07/15

2562912

AbstractIn this thesis we rst explain the gravitational lensing and microlensing en we study the circumsrtellar disks In order to investigate the e ect of disks onthe microlensing light curves we consider the protoplanetary disks as the mostsuitable candidate around the Galactic bulge source stars whi are lensed Weaim to 1 study the e ect of circumstellar disks on microlensing light curves andthen 2 estimate the detectability of su disks through photometry observation ofmicrolensing events via W F IRST satellite It will start working in near futureand will observer the Galactic bulge in 6 72 day seasons with the cadence around30 minutes In the apter 5 we explained how to simulate the proto planetarydisks in microlensing events and then studied how microlensing light curve areperturbed due to the existence of disks We nally did a simulation for a big en semble of microelnsing events and found that for 16 percent of simulated eventsthe photometry signals of disks is higher than 5 whi is detectable though nowa days telescopes Key words gravitational microlensing protoplanetary disk W F IRST

صديقه سجاديان

مسلم زارعي

بهروز ميرزا، احمد شيرزاد