Office of Scientific Computing
 

Upcoming Events

Friday, March 29, 2024
08:00 AM - 05:00 PM
No Meeting Week
All are encouraged to cancel or reschedule their meetings between 3/25/24 and 3/29/24.
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Tuesday, April 02, 2024
03:45 PM - 05:00 PM
ASD Colloquium (Hybrid)
Tell-tale electromagnetic signatures of massive black hole binaries
Jordy Davelaar (CCA/Flatiron Institute and Columbia University)

Due to galactic mergers, massive black hole binaries are thought to reside in the cores of numerous galaxies. As the massive black holes migrate inwards, they will eventually emit gravitational waves, which are expected to be detected by LISA. A critical component to understanding where and how black holes merge and how they shape galactic evolution is host galaxy identification, which relies on electromagnetic (EM) observations. In my talk, I will show two novel tell-tale EM signatures that would provide strong evidence for a black hole binary before or during a merger. The first is when the binary is seen close to edge on; in that case, the binary produces self-lensing flares (SLFs) when one of the black holes moves in front of the background black hole. This causes the emission to be gravitationally lensed. This signal can additionally hold information on the size and shape of the emission morphology of the lensed black hole. Secondly, I will argue that when the binary is close to merger, the accretion is disrupted, turning the binary X-ray dark. I will argue that the upcoming time-domain surveys and X-ray mission might be able to observe these signatures, and that they could be crucial for LISA source identification.

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Wednesday, April 03, 2024
12:00 PM - 01:00 PM
SED Director’s Seminar
Please join us for SED Director's Seminar hosted by the X-ray Astrophysics Laboratory, Code 662!

The first radio investigation of spatially-resolved mid-infrared dual active galactic nuclei
Miranda McCarthy

From the Microscopic to the Macroscopic: Atomic Data in the XRISM Era of High Resolution X-ray Spectra Analysis
Rachel Hemmer

A Closer Look at AGN- and Star Formation-Driven Outflows in a Compton-Thick Edge-on Galaxy
Isabella Carlton

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