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TDAMM SIG Meeting

Time-Domain and Multi-Messenger Astrophysics Science Interest Group

The Astro2020 Decadal Survey recommended an investment in Time Domain and Multi-Messenger Astrophysics (TDAMM) as the top-priority sustaining activity in space for the coming decade. 

TDAMM SIG about TDAMM SIG Meeting

Location

Virtual

Date

21 May 2025
2:00 PM ET

Community

TDAMM SIG

Type

Meeting

Exploring the Changing Sky with the Vera C. Rubin Observatory LSST

This image captures not only Vera C. Rubin Observatory, a Program of NSF NOIRLab, but one of the celestial specimens Rubin Observatory will observe when it comes online: the Milky Way. The bright halo of gas and stars on the left side of the image highlights the very center of the Milky Way galaxy. The dark path that cuts through this center is known as the Great Rift, because it gives the appearance that the Milky Way has been split in half, right through its center and along its radial arms. In fact, the Great Rift is caused by a shroud of dust, which blocks and scatters visible light.
Vera C. Rubin Observatory Under the Milky Way
Credit: RubinObs / NOIRLab / SLAC / NSF /DOE / AURA/ B. Quint

Speaker

Michael Wood-Vasey

Abstract

The Vera C. Rubin Observatory is an 8.4-m telescope with a 10 square degree field of view camera that will observe the visible southern sky every 3 days as part of the Legacy Survey of Space and Time (LSST). The LSST movie of the sky will open new vistas in transient and variable science. Robust image subtraction and event classification are key parts of fully exploiting the science for transient and variable objects. I will first discuss technical improvements in image subtraction that will help realize the full potential of LSST. I will discuss important science cases and particular cases that benefit from improved subtractions, such as partially-resolved strong lensing systems. I will conclude by discussing LSST Community Alert Brokers that will distribute information about transient and variable events worldwide.

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