Self-Driving Telescopes: Autonomous Scheduling of Astronomical Observation Campaigns with Offline Reinforcement Learning

Posted by dbos Chicago

Kavli Affiliate: Brian Nord | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: Modern astronomical experiments are designed to achieve multiple scientific goals, from studies of galaxy evolution to cosmic acceleration. These goals require data of many different classes of night-sky objects, each of which has a particular set of observational needs. These […]


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Cryogenic Focus Measurement System for a Wide-Field Infrared Space Telescope

Posted by dbos Caltech

Kavli Affiliate: James Bock | First 5 Authors: Samuel S. Condon, Stephen Padin, James Bock, Howard Hui, Phillip Korngut | Summary: We describe a technique for measuring focus errors in a cryogenic, wide-field, near-infrared space telescope. The measurements are made with a collimator looking through a large vacuum window, with a reflective cold filter to […]


Continue.. Cryogenic Focus Measurement System for a Wide-Field Infrared Space Telescope

Cryogenic Focus Measurement System for a Wide-Field Infrared Space Telescope

Posted by dbos Caltech

Kavli Affiliate: James Bock | First 5 Authors: Samuel S. Condon, Stephen Padin, James Bock, Howard Hui, Phillip Korngut | Summary: We describe a technique for measuring focus errors in a cryogenic, wide-field, near-infrared space telescope. The measurements are made with a collimator looking through a large vacuum window, with a reflective cold filter to […]


Continue.. Cryogenic Focus Measurement System for a Wide-Field Infrared Space Telescope

Forecasting constraints on the no-hair theorem from the stochastic gravitational wave background

Posted by dbos Peking

Kavli Affiliate: Ke Wang | First 5 Authors: Chen Tan, Ke Wang, , , | Summary: Although the constraints on general relativity (GR) from each individual gravitational-wave (GW) event can be combined to form a cumulative estimate of the deviations from GR, the ever-increasing number of GW events used also leads to the ever-increasing computational […]


Continue.. Forecasting constraints on the no-hair theorem from the stochastic gravitational wave background

L-function genera and applications

Posted by dbos Tokyo

Kavli Affiliate: Andrei Okounkov | First 5 Authors: David Kazhdan, Andrei Okounkov, , , | Summary: We introduce equivariant L-genera associated to actions of Galois and related groups on algebraic varieties. We explain the role which these L-genera play in the spectral analysis of Eisenstein series. We also discuss the natural categorification of L-genera and […]


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Constraints on the origin of the radio synchrotron background via angular correlations

Posted by dbos Tokyo

Kavli Affiliate: Shunsaku Horiuchi | First 5 Authors: Elisa Todarello, Marco Regis, Federico Bianchini, Jack Singal, Enzo Branchini | Summary: The origin of the radio synchrotron background (RSB) is currently unknown. Its understanding might have profound implications in fundamental physics or might reveal a new class of radio emitters. In this work, we consider the […]


Continue.. Constraints on the origin of the radio synchrotron background via angular correlations

Constraints on the origin of the radio synchrotron background via angular correlations

Posted by dbos Tokyo

Kavli Affiliate: Shunsaku Horiuchi | First 5 Authors: Elisa Todarello, Marco Regis, Federico Bianchini, Jack Singal, Enzo Branchini | Summary: The origin of the radio synchrotron background (RSB) is currently unknown. Its understanding might have profound implications in fundamental physics or might reveal a new class of radio emitters. In this work, we consider the […]


Continue.. Constraints on the origin of the radio synchrotron background via angular correlations

Generation of Isocurvature from Curvature Inhomogeneities on Super-Horizon Scales

Posted by dbos Chicago

Kavli Affiliate: Albert Stebbins | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: Here it is shown 1) how isocurvature inhomogeneities correlated on causally disconnected (super-horizon) scales are generated from curvature inhomogeneities which are known to be correlated on these scales 2) that super-horizon isocurvature generation is nearly inevitable for non-equilibrium chemical processes […]


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The Milky Way Tomography with Subaru Hyper Suprime-Cam. I. Halo substructures

Posted by dbos Tokyo

Kavli Affiliate: Masahiro Takada | First 5 Authors: Yoshihisa Suzuki, Masashi Chiba, Yutaka Komiyama, Kohei Hayashi, Masayuki Tanaka | Summary: We analyze the photometric data in the Wide layer of the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) over $sim 1,200$ deg$^{2}$ to uncover new halo substructures beyond the distance, $D_{odot}sim$ 30 kpc, from the Sun. […]


Continue.. The Milky Way Tomography with Subaru Hyper Suprime-Cam. I. Halo substructures