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Polarimetry of Black Hole Spin and Axisymmetric Emission Geometry
Vadim Bernshteyn, Daniel C. M. Palumbo, Dominic Chang +1
The Event Horizon Telescope array has measured the average polarimetric spiral morphology of black hole accretion disks using the so-called ``'' coefficient. This measurement…
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…
Spin inference with the Black Hole Explorer. I. Fisher information matrix forecast
Joseph R. Farah, Daniel C. M. Palumbo, Michael D. Johnson +1
General relativity predicts the presence of a thin, bright ring of light superimposed on the image of a black hole (the ``photon ring''), whose geometry is sensitive to the spin of…
Resolving Nearby Supermassive Black Holes with the Black Hole Explorer
Yuto Akiyama, Kazunori Akiyama, Dominic W. Pesce +12
Recent Event Horizon Telescope results have demonstrated unique and transformative science in gravitational physics and black hole astrophysics enabled by event-horizon-scale imagi…
Dynamics and geometry of the inner sub-parsec-scale jet in 3C 279 observed with the Event Horizon Telescope
Hendrik Mueller, Sebastiano D. von Fellenberg, Ai-Ling Zeng +275
The 2021 Event Horizon Telescope observations resolve the innermost jet region of the blazar 3C279 with unprecedented detail. The reconstructed images consistently reveal a compact…
Signatures of Black Hole Spin in Horizon-Scale Polarimetry
George N. Wong, Daniel C. M. Palumbo, Zachary Gelles +1
The angular momentum of a black hole, usually expressed in terms of a dimensionless "spin," both shapes the strong-field spacetime and provides a reservoir of rotational energy tha…