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The Two Phases of Galaxy Formation
Ludwig Oser, Jeremiah P. Ostriker, Thorsten Naab +2
Cosmological simulations of galaxy formation appear to show a two-phase character with a rapid early phase at z>2 during which in-situ stars are formed within the galaxy from infal…
The Effects of X-Ray and UV Background Radiation on the Low-Mass Slope of the Galaxy Mass Function
D. C. Hambrick, J. P. Ostriker, P. H. Johansson +1
Even though the dark-matter power spectrum in the absence of biasing predicts a number density of halos n(M) ~ M^-2 (i.e. a Schechter alpha value of -2) at the low-mass end (M < 10…
Templates for the Sunyaev-Zel'dovich Angular Power Spectrum
Hy Trac, Paul Bode, Jeremiah P. Ostriker
We present templates for the Sunyaev-Zel'dovich (SZ) angular power spectrum based on four models for the nonlinear gas distribution. The frequency-dependent SZ temperature fluctuat…
Momentum Driving: which physical processes dominate AGN feedback?
Jeremiah P. Ostriker, Ena Choi, Luca Ciotti +2
The deposition of mechanical feedback from a supermassive black hole (SMBH) in an active galactic nucleus (AGN) into the surrounding galaxy occurs via broad-line winds which must c…
Environmental effects on the growth of super massive black holes and AGN feedback
Min-Su Shin, Jeremiah P. Ostriker, Luca Ciotti
We investigate how environmental effects by gas stripping alter the growth of a super massive black hole (SMBH) and its host galaxy evolution, by means of 1D hydrodynamical simulat…
Feedback from central black holes in elliptical galaxies. III: models with both radiative and mechanical feedback
L. Ciotti, J. P. Ostriker, D. Proga
We find, from high-resolution hydro simulations, that winds from AGN effectively heat the inner parts (~100 pc) of elliptical galaxies, reducing infall to the central SMBH; and rad…