November 8, 2023 – Kavli Institute Pre-Print Publications

Astrophysical Distance Scale VII: A Self-Consistent, Multi-Wavelength Calibration of the Slopes and Relative Zero Points for the Run of Luminosity with Color of Stars Defining the Tip of the Red Giant Branch

Posted by dbos November 8, 2023November 20, 2023Chicago

Kavli Affiliate: Wendy L. Freedman | First 5 Authors: Barry F. Madore, Wendy L. Freedman, Kayla Owens, , | Summary: Given the recent successful launch of the James Webb Space Telescope, determining robust calibrations of the slopes and absolute magnitudes of the near- to mid-infrared Tip of the Red Giant Branch (TRGB) will be essential […]

Continue..

The High Energy X-ray Probe (HEX-P): resolving the nature of Sgr A* flares, compact object binaries and diffuse X-ray emission in the Galactic Center and beyond

Posted by klaurent November 8, 2023MIT

Kavli Affiliate: Melania Nynka | Summary:HEX-P is a probe-class mission concept that will combine high spatial resolution X-ray imaging ($<10"$ FWHM) and broad spectral coverage (0.2-80 keV) with an effective area far superior to current facilities’ (including XMM-Newton and NuSTAR). These capabilities will enable revolutionary new insights into a variety of important astrophysical problems. We […]

Continue..

Learning to Control under Uncertainty with Data-Based Iterative Linear Quadratic Regulator

Posted by dbos November 8, 2023November 20, 2023Peking

Kavli Affiliate: Ran Wang | First 5 Authors: Ran Wang, Raman Goyal, Suman Chakravorty, , | Summary: This paper studies the learning-to-control problem under process and sensing uncertainties for dynamical systems. In our previous work, we developed a data-based generalization of the iterative linear quadratic regulator (iLQR) to design closed-loop feedback control for high-dimensional dynamical […]

Continue..

The High Energy X-ray Probe (HEX-P): Supernova remnants, pulsar wind nebulae, and nuclear astrophysics

Posted by klaurent November 8, 2023MIT

Kavli Affiliate: Melania Nynka | Summary:HEX-P is a probe-class mission concept that will combine high spatial resolution X-ray imaging ($<10"$ full width at half maximum) and broad spectral coverage (0.2–80 keV) with an effective area far superior to current facilities (including XMM-Newton and NuSTAR) to enable revolutionary new insights into a variety of important astrophysical […]

Continue..

The High Energy X-ray Probe (HEX-P): Supernova remnants, pulsar wind nebulae, and nuclear astrophysics

Posted by dbos November 8, 2023MIT

Kavli Affiliate: Melania Nynka | First 5 Authors: Stephen Reynolds, Hongjun An, Moaz Abdelmaguid, Jason Alford, Chris L. Fryer | Summary: HEX-P is a probe-class mission concept that will combine high spatial resolution X-ray imaging ($<10"$ full width at half maximum) and broad spectral coverage (0.2–80 keV) with an effective area far superior to current […]

Continue..

X-Ray Polarized View on the Accretion Geometry in the X-Ray Binary Circinus X-1

Posted by dbos November 8, 2023MIT

Kavli Affiliate: Herman L. Marshall | First 5 Authors: John Rankin, Fabio La Monaca, Alessandro Di Marco, Juri Poutanen, Anna Bobrikova | Summary: Cir X-1 is a neutron star X-ray binary characterized by strong variations in flux during its eccentric $sim$16.6 days orbit. There are also strong variations in the spectral state, and historically it […]

Continue..

X-Ray Polarized View on the Accretion Geometry in the X-Ray Binary Circinus X-1

Posted by dbos November 8, 2023MIT

Continue..

Bandit Learning to Rank with Position-Based Click Models: Personalized and Equal Treatments

Posted by dbos November 8, 2023November 20, 2023Tokyo

Kavli Affiliate: Jia Liu | First 5 Authors: Tianchen Zhou, Jia Liu, Yang Jiao, Chaosheng Dong, Yetian Chen | Summary: Online learning to rank (ONL2R) is a foundational problem for recommender systems and has received increasing attention in recent years. Among the existing approaches for ONL2R, a natural modeling architecture is the multi-armed bandit framework […]

Continue..

End-to-End Modeling of the TDM Readout System for CMB-S4

Posted by klaurent November 8, 2023Stanford

Kavli Affiliate: Kent Irwin | Summary:The CMB-S4 experiment is developing next-generation ground-based microwave telescopes to observe the Cosmic Microwave Background with unprecedented sensitivity. This will require an order of magnitude increase in the 100 mK detector count, which in turn increases the demands on the readout system. The CMB-S4 readout will use time division multiplexing […]

Continue..

End-to-End Modeling of the TDM Readout System for CMB-S4

Posted by dbos November 8, 2023Stanford

Kavli Affiliate: Zeeshan Ahmed | First 5 Authors: David C. Goldfinger, Zeeshan Ahmed, Darcy R. Barron, W. Bertrand Doriese, Malcolm Durkin | Summary: The CMB-S4 experiment is developing next-generation ground-based microwave telescopes to observe the Cosmic Microwave Background with unprecedented sensitivity. This will require an order of magnitude increase in the 100 mK detector count, […]

Continue..