سمینار این هفته را خانم هاجر وکیلی از دانشکده فیزیک دانشگاه صنعتی شریف ارائه  خواهند کرد. عنوان و چکیدهٔ سمینار ایشان به شرح زیر است:

کهکشانهای لایه ای به عنوان آزمون فیزیک بنیادی

 (Shell Galaxies as a test of fundamental physics)

Abstract: Shell galaxies are elliptical ones surrounded by arc-like structures made of stars. They were observed in 1966 for the first time and recently with observation developments became noticeable again. After more than thirty years of study on their origin, now the shells are believed to be consequence of a merger of the elliptical with a dwarf galaxy.

In this talk I will describe how the shell patterns can reveal the underlying physics and use them to verify if it is possible to distinguish between dark matter scenarios and modified gravity models in galactic scales using shell galaxy observations.  Modified gravity (MOG), presented by Moffat in 2006 and Modified Newtonian Dynamics (MOND), invented in 1983 by Milgrom are investigated in this context, as well as Cold Dark Matter (with NFW halo) model.

این سمینار در روز یکشنبه ۵ مهرماه ۱۳۹۴، ساعت ۱۵ در کلاس فیزیک ۴  در طبقهٔ اول دانشکدهٔ فیزیک برگزار خواهد شد.