Cosmology 2018 in Dubrovnik

Session

Afternoon session

26 Oct 2018, 15:30

Dubrovnik, Croatia

19. Simulating galaxy formation with the Illustris-TNG model in f(R) modified gravity

Christian Arnold (Durham University )

26/10/2018, 15:30

The question on the nature of gravity and dark energy is one of the fundamental problems in modern cosmology. f(R) gravity is a viable alternative to general relativity (GR) with a cosmological constant and can therefore be used to test GR over a large range of scales. Simulations of cosmic structure formation in this model thus deliver crucial information on how possible deviations from GR...

47. Kinematic scaling relations of CALIFA and MaNGA galaxies: A dynamical mass proxy for galaxies across the Hubble sequence.

Dr Erik Aquino-Ortíz (Instituto de Astronomía, UNAM)

26/10/2018, 16:00

We used gas and stellar kinematics for spatially resolved galaxies from CALIFA and MaNGA surveys with the aim of studying dynamical scaling relations as the Tully&Fisher, Faber&Jackson and also a combination of them through the SK parameter defined as SK^2=KVrot^2+disp^2. TF and FJ generalized relations (early+late types) present larger dispersions and deviations from the classical ones. When...

48. Giant Monopole Dark Matter

Jarah Evslin (I)

26/10/2018, 17:00

Halo sized magnetic monopoles are automatically cored, have universal profiles and have a minimum mass given by Dirac quantization which can resolve the missing satellites problem. In addition they can possess spikes which can seed supermassive black hole growth. The Kibble mechanism lets them form just in time for structure formation. The main challenge is the screening of the intermonopole repulsion.

49. Testing the Cosmological Principle

Mohamed Rameez

26/10/2018, 17:30

The dipolar anisotropy of the CMB is believed to be due to our motion with respect to the CMB rest frame at 369 km/s. This should cause a dipolar modulation in the number counts of distant sources, through special relativistic aberration and Doppler boosting effects. We construct an all-sky catalogue of ~60000 radio galaxies, by combining the NRAO VLA Sky Survey (NVSS) and Sydney University...