Invited Presentation

Time Domain Astronomy with the SMA

Author(s): Alexandra Tetarenko (East Asian Observatory)

Presenter: Alexandra Tetarenko (East Asian Observatory)

Time domain analysis is a powerful tool with which to study accretion and jet physics near compact objects. Through detecting and characterizing rapid flux variability across a wide range of wavelength/energy bands (probing emission from different regions of the accretion flow and jet), we can measure properties that are difficult, if not impossible, to measure by traditional spectral and imaging methods (e.g., size scales, geometry, jet speeds, accretion conditions, the sequence of events leading to jet launching). While variability studies in the X-ray bands are a staple in the compact object community, many challenges accompany such studies at longer wavelengths. However, with recent advances to observing techniques/instrumentation, the availability of new computational tools, and today's improved coordination capabilities, we are no longer limited by these challenges. In this talk, I will discuss recent advances in multi-wavelength fast timing observations of compact objects, highlighting the critical role that the mm/sub-mm bands play, and showing how we can directly connect variability properties to accretion/jet physics. Additionally, I will discuss future prospects for obtaining more of these invaluable data sets, and the key role that next-generation instruments (including the upgraded SMA) will play in driving new discoveries through this science.