Galaxy clusters are the most massive, gravitationally bound systems in the universe. When two galaxy clusters collide, theories predict that their first contact
Arnab Sarkar, a graduate student in the Department of Physics and Astronomy at the University of Kentucky, will present data and photos that verify, for the very first time, the existence of a shock wave formed early in the merger process between two galaxy clusters.
Valeria Olivares, a postdoc in the UK Department of Physics and Astronomy, will discuss results from her project, which used images from NASA’s space-based X-ray observatory, Chandra, to study the activity of black holes at the center of galaxy clusters. Arnab Sarkar, a graduate student in the department, will present his team's discovery of an axial shock between two merging galaxy clusters.
The owners of a San Francisco North Beach restaurant posted an apology on Sunday over an incident where they asked police officers to leave the establishment because of their guns.
<p><span>The Commodity Futures Trading Commission today announced that the U.S. District Court for the Northern District of California entered a consent order for permanent injunction, monetary sanctions, and equitable relief against defendants Travis Capson of Kanab, Utah, Arnab Sarkar of El Cerrito, California, and their California company Denari Capital, LLC (Denari) to resolve a CFTC action filed on November 5, 2019. [See CFTC Press Release No. </span><a href="https://www.cftc.gov/PressRoom/PressReleases/8073-19">8073-19</a><span>].</span></p>