Dartmouth Events

Physics & Astronomy Colloquium - Jillian Bellovary, CUNY-QCC

Title: "Seeking Massive Black Holes in Dwarf Galaxies"

Friday, October 22, 2021
3:15pm – 4:15pm
In-person: Wilder 104 / Via Zoom (email for link & password)
Intended Audience(s): Public
Categories: Lectures & Seminars

Abstract: Recent discoveries of massive black holes in dwarf galaxies suggest that they may have a more common presence than once thought.  We present a study of several high-resolution, cosmological, zoom-in simulations focusing on dwarf galaxies that host massive black holes at z = 0.  Larger dwarf galaxies are more likely to host MBHs than those of lower mass.  About 50% of the MBHs in dwarfs are not centrally located, but rather are wandering within a few kpc of the galaxy center.   The reason for off-center locations is mainly due to galaxy-galaxy mergers.   The accretion luminosities of most MBHs in dwarfs are low throughout cosmic time, rendering them extremely difficult to detect electromagnetically.  However, the merger history of these black holes is optimal for gravitational wave detection by LISA.

For more information, contact:
Tressena Manning

Events are free and open to the public unless otherwise noted.