Pulsar timing array (PTA) experiments aim to detect
nHz-frequency gravitational waves using high-precision timing of
millisecond pulsars. Multiple PTA collaborations have recently
reported evidence for a stochastic gravitational wave
background...
A large fraction of exoplanetary systems contain planets that
orbit very close to their host stars. With orbital periods in the
range of days to weeks, tidal forces become important and lead to
significant orbital and physical effects on the planets...
The search for signs of life beyond Earth is a key motivator in
exoplanet research. A suitable “biosignature gas” is one
that: can accumulate in an atmosphere against atmospheric radicals
and other sinks; has strong atmospheric spectral features...
Galaxies are at the core of nearly all modern astrophysical
studies. They serve as essential cosmological probes, tracing the
structure of the universe, while also providing the stage on which
stars form and black holes grow. Despite their...
From the collapse of molecular clouds into stars to spectacular
galactic mergers, binary systems form on many scales across the
universe. Interactions between binaries and their environments can
sculpt the stellar populations we observe today, alter...
Superradiant instabilities may create clouds of ultralight
bosons around rotating black holes, forming so-called
"gravitational atoms". In this talk, I will review a series of
papers that study the effects of a binary companion’s presence.
The...
I’ll discuss an old technique called intensity interferometry,
pioneered by Hanbury Brown and Twiss (HBT) that allows us to
achieve sub-microarcsecond angular resolution using ordinary
ground-based optical telescopes observing visible light.
This...
In this talk I will review the current state of and future
prospects for exoplanet demographics. I will walk through the
latest understanding of the frequency of Earth-like planets from
Kepler, and their implications for NASA’s next flagship
mission...
