Joint IAS Princeton University Astrophysics Colloquium

Apr
06
2021

Institute for Advanced Study / Princeton University Joint Astrophysics Colloquium

Protoplanetary Disk Structure and Young Planet Population
Zhaohuan Zhu
11:00am|Virtual Meeting

Recent ground based observations at various wavelengths reveal a variety of protoplanetary disk structures. These disk structures may help us to constrain the planet formation process. I will first discuss how to apply the planet-disk interaction...

Mar
23
2021

Institute for Advanced Study / Princeton University Joint Astrophysics Colloquium

The Nearby Universe - A Laboratory to Study the Cosmic Build-up of Dust and Metals in Galaxies
Julia Roman-Duval
11:00am|Virtual Meeting

A key component of the baryon cycle in galaxies is the cycle of metals between the gas and the dust phases in the neutral interstellar medium (ISM). How this cycle depends on environment (in particular metallicity and density) has important...

Mar
16
2021

Institute for Advanced Study / Princeton University Joint Astrophysics Colloquium

From galaxies to faces: recognizing the implications of Artificial Intelligence in astronomy and society
Brian Nord
11:00am|Virtual Meeting

Artificial Intelligence (AI) refers to a set of techniques that rely primarily on the data itself for the construction of a quantitative model. AI has arguably been in development for three quarters of a century, but there has been a recent...

Mar
02
2021

Institute for Advanced Study / Princeton University Joint Astrophysics Colloquium

Making Sense of Stellar Rotation in Low Mass Stars: Gyrochronology, Magnetism, and a Sun in Transition
Jennifer van Saders
12:30pm|Virtual Meeting

Stellar rotation carries a wealth of information about stellar populations. In particular, the technique of gyrochronology was developed to utilize the spin-down of stars as a function of time as an indicator of stellar age. Gyrochronology has the...

Feb
23
2021

Institute for Advanced Study / Princeton University Joint Astrophysics Colloquium

Probing Red Giants with Kepler
Jørgen Christensen-Dalsgaard
11:00am|Virtual Meeting

The frequencies of oscillations observed on a stellar surface carry information about the properties of the stellar interior. Asteroseismology, i.e., the unravelling of this information, has made a huge leap thanks to the photometric observations...

Feb
16
2021

Institute for Advanced Study / Princeton University Joint Astrophysics Colloquium

Cosmology with Gravitational Lens Time Delays
Sherry Suyu
11:00am|Virtual Meeting

Strong gravitational lenses with measured time delays between the multiple images can be used to determine the Hubble constant (H0) that sets the expansion rate of the Universe. An independent determination of H0 is important to ascertain the...

Feb
02
2021

Institute for Advanced Study / Princeton University Joint Astrophysics Colloquium

The Impact of Cosmic-Rays on Galaxy Formation
Eliot Quataert
11:00am|Virtual Meeting

Relativistic cosmic-rays created by stellar and black hole feedback may play an important role in many aspects of structure formation. Cosmic-rays can drive outflows from star forming galaxies and heat diffuse gas in the circumgalactic and...

Dec
01
2020

Institute for Advanced Study / Princeton University Joint Astrophysics Colloquium

The NASA Parker Solar Probe mission at the edge of the solar streamer belt
Stuart Bale
11:00am|Virtual Meeting
The physics of astrophysical coronal heating and the origin of the slow solar wind remain compelling problems in heliospheric physics, and plasma astrophysics more generally. The NASA Parker Solar Probe mission was launched in late 2018 and...