All Disciplines – Page 416 – Kavli Institute Pre-Print Publications

The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems III: Aperture Masking Interferometric Observations of the star HIP 65426 at 3.8 um

Posted by dbos October 17, 2023Stanford

Kavli Affiliate: Bruce Macintosh | First 5 Authors: Shrishmoy Ray, Steph Sallum, Sasha Hinkley, Anand Sivamarakrishnan, Rachel Cooper | Summary: We present aperture masking interferometry (AMI) observations of the star HIP 65426 at $3.8,rm{mu m}$ as a part of the JWST Direct Imaging Early Release Science (ERS) program obtained using the Near Infrared Imager and […]

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Modeling Post-Reionization HI Distributions in Fuzzy Dark Matter Cosmologies Using Conditional Normalizing Flows

Posted by dbos October 17, 2023October 30, 2023Cambridge

Kavli Affiliate: George Efstathiou | First 5 Authors: Tibor Dome, Rumail Azhar, Anastasia Fialkov, , | Summary: Upcoming 21 cm intensity mapping experiments like the Square Kilometer Array (SKA) hold significant potential to constrain the properties of dark matter. In this work, we model neutral hydrogen (HI) distributions using high-resolution hydrodynamical $N$-body simulations of both […]

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The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems IV: NIRISS Aperture Masking Interferometry Performance and Lessons Learned

Posted by dbos October 17, 2023Stanford

Kavli Affiliate: Bruce Macintosh | First 5 Authors: Steph Sallum, Shrishmoy Ray, Jens Kammerer, Anand Sivaramakrishnan, Rachel Cooper | Summary: We present a performance analysis for the aperture masking interferometry (AMI) mode on board the James Webb Space Telescope Near Infrared Imager and Slitless Spectrograph (JWST/NIRISS). Thanks to self-calibrating observables, AMI accesses inner working angles […]

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ALMA gas-dynamical mass measurement of the supermassive black hole in the red nugget relic galaxy PGC 11179

Posted by dbos October 17, 2023October 30, 2023Peking

Kavli Affiliate: Luis Ho | First 5 Authors: Jonathan H. Cohn, Maeve Curliss, Jonelle L. Walsh, Kyle M. Kabasares, Benjamin D. Boizelle | Summary: We present 0$.!!^{primeprime}22$-resolution Atacama Large Millimeter/submillimeter Array (ALMA) observations of CO(2$-$1) emission from the circumnuclear gas disk in the red nugget relic galaxy PGC 11179. The disk shows regular rotation, with […]

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Dual-Band Observations of the Asymmetric Ring around CIDA 9A: Dead or Alive?

Posted by dbos October 17, 2023October 30, 2023Peking

Kavli Affiliate: Gregory J. Herczeg | First 5 Authors: Daniel Harsono, Feng Long, Paola Pinilla, Alessia A. Rota, Carlo F. Manara | Summary: While the most exciting explanation of the observed dust asymmetries in protoplanetary disks is the presence of protoplanets, other mechanisms can also form the dust features. This paper presents dual-wavelength Atacama Large […]

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Low energy electrodynamics and a hidden Fermi liquid in the heavy-fermion CeCoIn$_5$

Posted by dbos October 17, 2023October 30, 2023Cornell

Kavli Affiliate: Darrell G. Schlom | First 5 Authors: L. Y. Shi, Zhenisbek Tagay, Jiahao Liang, Khoan Duong, Yi Wu | Summary: We present time-domain THz spectroscopy of thin films of the heavy-fermion superconductor CeCoIn$_5$. The complex optical conductivity is analyzed through a Drude model and extended Drude model analysis. Below the $approx$ 40 K […]

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Low energy electrodynamics and a hidden Fermi liquid in the heavy-fermion CeCoIn$_5$

Posted by dbos October 17, 2023October 30, 2023Cornell

Kavli Affiliate: Kyle Shen | First 5 Authors: L. Y. Shi, Zhenisbek Tagay, Jiahao Liang, Khoan Duong, Yi Wu | Summary: We present time-domain THz spectroscopy of thin films of the heavy-fermion superconductor CeCoIn$_5$. The complex optical conductivity is analyzed through a Drude model and extended Drude model analysis. Below the $approx$ 40 K Kondo […]

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Global solutions of 2D non-resistive MHD system under a magnetic vortex background

Posted by dbos October 17, 2023October 30, 2023UCAS

Kavli Affiliate: Yi Zhou | First 5 Authors: Yuanyuan Qiao, Yi Zhou, , , | Summary: We investigate the global well-posedness of two-dimensional incompressible viscous and non-resistive MHD system near a non-constant equilibrium. Assuming that the initial data has certain symmetries, we can establish time-weighted lower-order energy estimates and uniform higher-order energy estimates by exploring […]

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Global solutions of 2D non-resistive MHD system with constant background magnetic vorticity

Posted by dbos October 17, 2023UCAS

Kavli Affiliate: Yi Zhou | First 5 Authors: Yuanyuan Qiao, Yi Zhou, , , | Summary: This paper investigates the stabilization effect of a background magnetic vorticity on electrically conducting fluids. By exploring the dissipation nature of the linearized equations, we prove the global existence of smooth solutions to the two-dimensional incompressible viscous and non-resistive […]

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Generation of realistic input parameters for simulating atmospheric point-spread functions at astronomical observatories

Posted by dbos October 16, 2023Stanford

Kavli Affiliate: Patricia R. Burchat | First 5 Authors: Claire-Alice Hébert, Joshua E. Meyers, My H. Do, Patricia R. Burchat, the LSST Dark Energy Science Collaboration | Summary: High-fidelity simulated astronomical images are an important tool in developing and measuring the performance of image-processing algorithms, particularly for high precision measurements of cosmic shear — correlated […]

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