Low-Mass Active Galactic Nuclei with Rapid X-Ray Variability

Kavli Affiliate: Luis Ho | First 5 Authors: Luis Ho, Minjin Kim, , , | Summary: We present a detailed study of the optical spectroscopic properties of 12 active galactic nuclei (AGNs) with candidate low-mass black holes (BHs) selected by Kamizasa et al. through rapid X-ray variability. The high-quality, echellette Magellan spectra reveal broad H$alpha$ […]


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Quantum difference equation for Nakajima varieties

Kavli Affiliate: Andrei Okounkov | First 5 Authors: Andrei Okounkov, Andrey Smirnov, , , | Summary: For an arbitrary Nakajima quiver variety $X$, we construct an analog of the quantum dynamical Weyl group acting in its equivariant K-theory. The correct generalization of the Weyl group here is the fundamental groupoid of a certain periodic locally […]


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