Abstract: The Southern Stellar Stream Spectroscopic Survey (S5) is an ongoing spectroscopic program that maps the newly discovered stellar streams with the fiber-fed AAOmega spectrograph on the Anglo-Australian Telescope (AAT)….

…luminosity. Canonical AGN UFOs, typically detected in Fe K band, exhibit massive column (NH > 1e23 cm^-2), highly ionized ions (log \xi ~ 4 – 6) besides its high velocity….

Abstract: The Milky Way’s Galactic Center black hole Sagittarius A* is the closest to us supermassive black hole. It is an ideal candidate to explore near horizon effects, to test…

…3:30 pm EST WHERE: www.kavlifoundation.org/science-spotlights/spotlight-live-hunt-other-wor… HOW TO SUBMIT QUESTIONS: Questions can be submitted ahead of and during this webcast by email to info@kavlifoundation.org or use the hashtag #KavliLive on Google+…

Abstract: When the Universe was merely three billion years old, about half of massive galaxies had already formed the bulk of their stars and new star formation plummeted. How these…

…its journey into the galaxy. Continue reading: https://www.scientificamerican.com/…/voyager-2-makes-an-un…/ Image: Illustration shows the positions of NASA’s Voyager 1 and Voyager 2 probes outside the heliosphere, the region surrounding our star, beyond…

…black holes in the context of isolated binary evolution. As a member of the POSYDON collaboration (https://posydon.org), I am currently working on bringing detailed MESA stellar and binary simulations to…

…* * * * * * * * * * * * * * * * * * * * Tabassum Tanvir, Australian National University at 12:30 pm (remote)  …