سمینار ۱ : Investigation of Fuzzy Dark Matter Theory
علیرضا مالکی (دانشکده فیزیک دانشگاه صنعتی شریف )
سمینار ۲ : GW170104: Observation of a 50-Solar-Mass Binary Black Hole Coalescence at Redshift 0.2
عباس خان بیگی (دانشکده فیزیک دانشگاه صنعتی شریف )
درفصل تابستان سمینارها ۱۰ صبح برگزار خواهد شد!
Abstract of Seminar 1: In this talk, we will discuss about the cosmological standard model’s problems in small scales and introduce the Fuzzy Dark Matter theory as a possible solution to these problems. Finally we will discuss about observational methods to investigate this theory.
Abstract of Seminar 2: On January 4, 2017 at 10:11:58.6 the twin detectors of LIGO, observed a signal which was calculated to belong to the coalescence of two stellar-mass black holes with roughly 31 and 19 solar masses. The resulting black hole was roughly 2 solar masses lighter than combined masses, emitting the difference as the energy carried out by gravitational radiation. The signal to noise ratio was 13 and the signal travelled through universe roughly about 3 billion years which is two times further than the first detection. The significant point about this detection, which is considered to be the third official announcement, is that the spin configurations in which the spin of both constituent black holes are positively aligned with the orbital angular momentum are disfavored which provides hints about how this binary was formed. Consistency with General Relativity and the constrains on the mass of graviton is also discussed.
یکشنبه ۱۱ تیر ماه ۱۳۹۶، ساعت ۱۰:۰۰
دانشکده فیزیک، طبقه اول، کلاس فیزیک ۳