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The Structure in the Structure Function of Black Hole Light Curves
Daniel C. M. Palumbo, Alejandro Cárdenas-Avendaño, Lena Murchikova
Of the two black holes, M87 and Sgr~A, for which event-horizon-scale imaging is currently achievable, only Sgr~A at our Galactic Center exhibits sub-hour varia…
Stellar-wind Fueled Accretion onto Sagittarius A* in the Presence of a Nuclear Star Cluster
Edward Skrabacz, Lena Murchikova, Sean M. Ressler +2
The Milky Way's Galactic Center hosts the black hole Sagittarius A* (Sgr A*), which provides us with a close-up view into supermassive black hole accretion and feedback. Recent wor…
Detection Prospects of Electromagnetic Signatures from OGLE-2011-BLG-0462
Shigeo S. Kimura, Lena Murchikova, Kailash C. Sahu
Stellar-mass isolated black holes (IsoBHs) wandering in interstellar medium (ISM) are expected to be abundant in our Galaxy. Recently, an IsoBH, OGLE-2011-BLG-0462, was unambiguous…
The Inner 2 pc of Sagittarius A*: Simulations of the Circumnuclear Disk and Multiphase Gas Accretion in the Galactic Center
Siddhant Solanki, Sean M. Ressler, Lena Murchikova +2
We present hydrodynamic simulations of the inner few parsecs of the Milky Way's Galactic Center that, for the first time, combine a realistic treatment of stellar winds and the cir…
Remarkable correspondence of Sagittarius A* submillimeter variability with a stellar-wind-fed accretion flow model
Lena Murchikova, Christopher J. White, Sean M. Ressler
We compare the 230 GHz near-horizon emission from Sagittarius A* to simulations representing three classes of accretion flows. Using the structure function to capture the variabili…