Description
Talks related to space telescopes and their discoveries.
Supernovae are the ultimate beacons of the time domain universe, signaling the cataclysmic end of massive stars and acting as the cosmic alchemists that forge the building blocks of galaxies. As the world of astronomy changes through the arrival of large survey datasets and advanced space based observatories, we are finally able to resolve long standing questions regarding the origin and...
Fast infrared transients have not been well explored; however, we now have chance to search this parameter space. With creative analysis techniques, we are using the James Webb Space Telescope (JWST) to search for transients with lifetimes from seconds to minutes. A single exposure from JWST is made up of integrations that are a combination of numerous non-destructive reads. This means that a...
The GBTDS is one of the three core community surveys to be undertaken during the first five years after launch of the Nancy Grace Roman Space Telescope. Its primary purpose is the detection of Milky Way exoplants by microlensing and transits. However, the survey cadence and area make it useful for extragalactic science, with the obvious caveats of extinction and stellar crowding in the...
The Nancy Grace Roman Space Telescope will provide a revolutionary measurement of evolving dark energy out to z < 3. The accuracy of this measurement is predicated on the assumption that Type Ia supernova (SN Ia) luminosities do not evolve with redshift. If present, SN Ia luminosity evolution is expected to be most detectable in the dark matter–dominated era of the Universe (z > 1.5); its...
Despite using Type Ia supernovae (SNe Ia) to precisely measure cosmological parameters, we do not know basic facts about the progenitor systems and explosions. Theory suggests that SN Ia progenitor metallicity is correlated with peak luminosity, but not how quickly it fades, which we use to calibrate the luminosity and measure distances. This effect should lead to an increased Hubble scatter,...
In the last seven years TESS has given us a unique window into the dynamic universe. While intended for exoplanet discovery this telescope has observed all variety of transient and variable across the sky. Over its lifetime TESS has imaged the sky at cadences ranging from 30 minutes to just 200 seconds. In this talk I will give an overview of the time domain science possible with TESS, and...
