Astrophysics

SPHEREx, an upcoming NASA medium-class Explorer Mission, will perform the first all-sky near infrared spectral survey. With a targeted launch date in early 2025, SPHEREx will map the entire sky at 6.2 arcsec from 0.75 to 5μm with a spectral...

The Astro2020 Decadal Report recognized that 21st Century astrophysics required matched coverage across the electromagnetic spectrum. To create that coverage Astro2020 recommended a set of three Great Observatories: X-ray, IR/O/UV, and Mid-Far-IR.
Un...

In this talk, I will review recent progress in understanding the complex multi-scale plasma physics of neutron star magnetospheres through the lens of first-principles particle-in-cell simulations. I will highlight pair production discharges near...

Asteroids are not just potato-shaped lumps of rock. Instead they are deeply involved in several Big Questions that engage our love of knowledge - the origin and history of the Solar System, the origin of the oceans, the origin of life, and the...

Abstract: Besides providing a possible explanation to the strong CP problem and dark matter, the QCD axion possesses a rich cosmology. For example, if PQ breaking occurs after inflation, then axion cosmic strings form. Near the QCD phase transition...

The Bahcall Lunch follows the astrophysics colloquium lecture. 

For the last half-century, relativistic outflows accompanying the final collapse of massive stars have predominantly been detected via high-energy emission, as long-duration gamma-ray bursts (GRBs). Yet, it has long been hypothesized that GRBs are...

This week we join with SFIR: Star Formation/ISM Rendezvous. Note the special time and place.

Abstract: We present an extensive study of the effects of neutrino transport in 3-dimensional general relativistic radiation hydrodynamics (GRHD) simulations of binary neutron star (BNS) mergers using our moment-based, energy-integrated  neutrino...