20211119 < Main

---+ November 19, 2021 7-9PM
*Event Type*: [[PublicLectures][Lecture and Stargazing]]<br>
*Title*: The Enigmatic Corona: Powerhouse of Accreting Black Holes<br>
*Lecturer*: Nikita Kamraj<br>
*Position*: Recent PhD<br>
*Institution*: Caltech<br>
*Abstract*: <br>
Of all the incredible phenomena and objects that exist within the universe, black holes in particular have always been a major source of interest for astronomers and the general public alike. Accreting supermassive black holes – called Active Galactic Nuclei (AGN) – are one of the most luminous and energetic objects in our known universe. These monstrously powerful black holes have masses that are millions to a billion times that of the sun, but are by no means “black”, emitting copious amounts of radiation across the electromagnetic spectrum. Such accreting black hole systems shine especially brightly in X-rays, through a structure called the corona. While not nearly as famous as the viral pandemic of the same name, the corona is a critical component of accreting black holes. However, despite being such a key structure, the nature of the corona is shrouded in mystery. In this talk, I will explore why these black holes are so luminous, how we believe the corona operates, and how new X-ray telescopes have transformed our understanding of black holes and corona alike.

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<img src="%ATTACHURLPATH%/20211119V.jpg" alt="20211119V.jpg" width="768" height="1024" />

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