The Bahcall Lunch follows the astrophysics colloquium lecture.
Registration is required by 4pm the previous Thursday so a meal can
be provided. Email Amanda at cenker@ias.edu
with questions.
Abstract: Planetary systems are shaped as much by
destructive processes --- N-body instabilities, catastrophic
impacts, and atmospheric loss --- as by accretionary ones. We
examine the histories of violence written in: (a) the orbital
architectures...
I will describe our recent paper Oren+ 2024 arXiv2403.09476 in
which we analyze recent observations of the the thermal
Sunyaev-Zeldovich (tSZ) effect arising in the circumgalactic medium
(CGM) of L* galaxies. We make use of analytic models and...
Gravitational forces from the largest structures in the Universe
leave a detectable imprint on galaxies and their local environment.
This can manifest as the "Intrinsic Alignment" of galaxy
orientations to the large-scale tidal field, although...
Abstract: I will talk about the scattering
problem in general relativity, and present a construction of a
scattering theory resolving the problem for the linearised Einstein
equations in a double null gauge against a Schwarzschild
background. This...
Magnetic field and tide are of importance for celestial bodies.
In the first part, I will discuss uniform rotation of solar
radiative zone, convection dynamo in star, precession dynamo in
planet, and collision dynamo in planetesimal. In the second...
Electron injection into diffusive shock acceleration has been a
topic of great interest over the decades. One of the prime
candidate mechanisms, stochastic shock drift acceleration
(SSDA), has recently been discussed based on fully
kinetic...
JWST has found many more supermassive black holes (SMBHs) at
z>4 than we expected. In addition, some of these SMBHs show
spectacular properties, such as their masses given their redshifts
and host galaxy masses. Nonetheless, it is difficult to...
