The Massive and Distant Clusters of $WISE$ Survey. XII. Exploring X-ray AGN in Dynamically Active Massive Galaxy Clusters at z~1

Posted by dbos MIT

Kavli Affiliate: Michael McDonald | First 5 Authors: Mustafa Muhibullah, Mark Brodwin, Michael McDonald, Anthony H. Gonzalez, Emily Moravec | Summary: We present an analysis of the cluster X-ray morphology and active galactic nucleus (AGN) activity in nine $zsim1$ galaxy clusters from the Massive and Distant Clusters of $WISE$ Survey (MaDCoWS) observed with $Chandra$. Using […]


Continue.. The Massive and Distant Clusters of $WISE$ Survey. XII. Exploring X-ray AGN in Dynamically Active Massive Galaxy Clusters at z~1

Spectroastrometry and Reverberation Mapping of Active Galactic Nuclei. II. Measuring Geometric Distances and Black Hole Masses of Four Nearby Quasars

Posted by dbos Peking

Kavli Affiliate: Jinyi Shangguan | First 5 Authors: Yan-Rong Li, Jinyi Shangguan, Jian-Min Wang, Ric Davies, Daryl J. Santos | Summary: The geometric distances of active galactic nuclei (AGNs) are challenging to measure because of their exceptionally compact structure yet vast cosmic distances. A combination of spectroastrometry and reverberation mapping (SARM) of broad-line regions (BLRs) […]


Continue.. Spectroastrometry and Reverberation Mapping of Active Galactic Nuclei. II. Measuring Geometric Distances and Black Hole Masses of Four Nearby Quasars

Asteroseismic Study of Subgiants and Giants of the Open Cluster M67 using Kepler/K2: Expanded Sample and Precise Masses

Posted by dbos MIT

Kavli Affiliate: Andrew Vanderburg | First 5 Authors: Claudia Reyes, Dennis Stello, Marc Hon, Yaguang Li, Timothy R. Bedding | Summary: Sparked by the asteroseismic space revolution, ensemble studies have been used to produce empirical relations linking observed seismic properties and fundamental stellar properties. Cluster stars are particularly valuable because they have the same metallicity, […]


Continue.. Asteroseismic Study of Subgiants and Giants of the Open Cluster M67 using Kepler/K2: Expanded Sample and Precise Masses

Asteroseismic Study of Subgiants and Giants of the Open Cluster M67 using Kepler/K2: Expanded Sample and Precise Masses

Posted by dbos MIT

Kavli Affiliate: Andrew Vanderburg | First 5 Authors: Claudia Reyes, Dennis Stello, Marc Hon, Yaguang Li, Timothy R. Bedding | Summary: Sparked by the asteroseismic space revolution, ensemble studies have been used to produce empirical relations linking observed seismic properties and fundamental stellar properties. Cluster stars are particularly valuable because they have the same metallicity, […]


Continue.. Asteroseismic Study of Subgiants and Giants of the Open Cluster M67 using Kepler/K2: Expanded Sample and Precise Masses

Cross-Model Validation of Coronagraphic Exposure Time Calculators for the Habitable Worlds Observatory: A Report from the Exoplanet Science Yield sub-Working Group

Posted by dbos Stanford

Kavli Affiliate: Bruce Macintosh | First 5 Authors: Christopher C. Stark, Sarah Steiger, Armen Tokadjian, Dmitry Savransky, Rus Belikov | Summary: Estimating the exoplanet scientific productivity of the Habitable Worlds Observatory requires estimating science exposure times. From exoplanet yields to spectral retrievals, exposure times are at the heart of our understanding of the capabilities of […]


Continue.. Cross-Model Validation of Coronagraphic Exposure Time Calculators for the Habitable Worlds Observatory: A Report from the Exoplanet Science Yield sub-Working Group

Quantum Wishlist: Lessons from Parton Showers

Posted by dbos Tokyo

Kavli Affiliate: Masahito Yamazaki | First 5 Authors: Masahito Yamazaki, , , , | Summary: We discuss general criteria that could guide us in applying quantum algorithms/computers to problems in high-energy physics. We then discuss the particular example of parton showers with quantum interference. We summarize the basic ideas behind the classical and quantum parton […]


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Hybrid stars with large quark cores within the parity doublet model and modified NJL model

Posted by dbos Peking

Kavli Affiliate: Renxin Xu | First 5 Authors: Wen-Li Yuan, Bikai Gao, Yan Yan, Renxin Xu, | Summary: Using the parity doublet model (PDM) for hadronic matter and a modified Nambu-Jona-Lasinio (NJL) model for quark matter, we investigate the potential existence of two- and three-flavor quark matter in neutron star cores. Both models respect chiral […]


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FEASTS Combined with Interferometry (IV): Mapping HI Emission to a limit of $N_{text{HI}}=10^{17.7} text{cm}^{-2}$ in Seven Edge-on Galaxies

Posted by dbos Peking

Dong Yang, Jing Wang, Zhijie Qu, Zezhong Liang, Xuchen Lin | Summary: [[{“value”:”We present a statistical study of the neutral atomic hydrogen (HI) gas extending into the circumgalactic medium perpendicular to the disk for 7 edge-on galaxies with inclinations above $85^{circ}$ from the FEASTS program with a $3sigma$ ($20,text{km},text{s}^{-1}$) column density ($N_{text{HI}}$) depth of $5times10^{17} […]


Continue.. FEASTS Combined with Interferometry (IV): Mapping HI Emission to a limit of $N_{text{HI}}=10^{17.7} text{cm}^{-2}$ in Seven Edge-on Galaxies

TESSELLATE: Piecing Together the Variable Sky With TESS

Posted by dbos MIT

Kavli Affiliate: Michael M. Fausnaugh | First 5 Authors: Hugh Roxburgh, Ryan Ridden-Harper, Andrew Moore, Clarinda Montilla, Brayden Leicester | Summary: We present TESSELLATE, a dedicated pipeline for performing an untargeted search documenting all variable phenomena captured by the TESS space telescope. Building on the TESSreduce difference imaging pipeline, TESSELLATE extracts calibrated and reduced photometric […]


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Are Sparse Autoencoders Useful? A Case Study in Sparse Probing

Posted by dbos MIT

Kavli Affiliate: Max Tegmark | First 5 Authors: Subhash Kantamneni, Joshua Engels, Senthooran Rajamanoharan, Max Tegmark, Neel Nanda | Summary: Sparse autoencoders (SAEs) are a popular method for interpreting concepts represented in large language model (LLM) activations. However, there is a lack of evidence regarding the validity of their interpretations due to the lack of […]


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