Subgoal-based Hierarchical Reinforcement Learning for Multi-Agent Collaboration

Kavli Affiliate: Ran Wang | First 5 Authors: Cheng Xu, Changtian Zhang, Yuchen Shi, Ran Wang, Shihong Duan | Summary: Recent advancements in reinforcement learning have made significant impacts across various domains, yet they often struggle in complex multi-agent environments due to issues like algorithm instability, low sampling efficiency, and the challenges of exploration and […]


Continue.. Subgoal-based Hierarchical Reinforcement Learning for Multi-Agent Collaboration

Characterization of X-ray Detectors in the MIT X-ray Polarimetry Beamline

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Sarah N. T. Heine, Herman L. Marshall, Benjamin Schneider, Beverly Lamar, Nithya Kothnur | Summary: The MIT X-ray Polarimetry Beamline is a facility that we developed for testing components for possible use in X-ray polarimetry. Over the past few years, we have demonstrated that the X-ray […]


Continue.. Characterization of X-ray Detectors in the MIT X-ray Polarimetry Beamline

Characterization of X-ray Detectors in the MIT X-ray Polarimetry Beamline

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Sarah N. T. Heine, Herman L. Marshall, Benjamin Schneider, Beverly Lamar, Nithya Kothnur | Summary: The MIT X-ray Polarimetry Beamline is a facility that we developed for testing components for possible use in X-ray polarimetry. Over the past few years, we have demonstrated that the X-ray […]


Continue.. Characterization of X-ray Detectors in the MIT X-ray Polarimetry Beamline

Characterization of X-ray Detectors in the MIT X-ray Polarimetry Beamline

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Sarah N. T. Heine, Herman L. Marshall, Benjamin Schneider, Beverly Lamar, Nithya Kothnur | Summary: The MIT X-ray Polarimetry Beamline is a facility that we developed for testing components for possible use in X-ray polarimetry. Over the past few years, we have demonstrated that the X-ray […]


Continue.. Characterization of X-ray Detectors in the MIT X-ray Polarimetry Beamline

An FUV-detected Accretion Shock at the Star-Disk Boundary of FU Ori

Kavli Affiliate: Gregory J. Herczeg | First 5 Authors: Adolfo S. Carvalho, Lynne A. Hillenbrand, Kevin France, Gregory J. Herczeg, | Summary: FU Ori objects are the most extreme eruptive young stars known. Their 4 to 5 magnitude photometric outbursts last for decades and are attributed to a factor of up to 10,000 increase in […]


Continue.. An FUV-detected Accretion Shock at the Star-Disk Boundary of FU Ori

On the kinematic nature of apparent discs at high redshifts: Local counterparts are not dominated by ordered rotation but by tangentially anisotropic random motion

Kavli Affiliate: Yingjie Peng | First 5 Authors: Bitao Wang, Yingjie Peng, Michele Cappellari, Hua Gao, Houjun Mo | Summary: It is not straightforward to physically interpret the apparent morphology of galaxies. Recent observations by James Webb Space Telescope (JWST) revealed a dominant galaxy population at high redshifts ($z>2$) that were visually classified as discs […]


Continue.. On the kinematic nature of apparent discs at high redshifts: Local counterparts are not dominated by ordered rotation but by tangentially anisotropic random motion

On the kinematic nature of apparent discs at high redshifts: Local counterparts are not dominated by ordered rotation but by tangentially anisotropic random motion

Kavli Affiliate: Yingjie Peng | First 5 Authors: Bitao Wang, Yingjie Peng, Michele Cappellari, Hua Gao, Houjun Mo | Summary: It is not straightforward to physically interpret the apparent morphology of galaxies. Recent observations by James Webb Space Telescope (JWST) revealed a dominant galaxy population at high redshifts ($z>2$) that were visually classified as discs […]


Continue.. On the kinematic nature of apparent discs at high redshifts: Local counterparts are not dominated by ordered rotation but by tangentially anisotropic random motion

Concept of a Double Tilted Rowland Spectrograph for X-rays

Kavli Affiliate: Ralf K. Heilmann | First 5 Authors: Hans Moritz Günther, Casey T. DeRoo, Ralf K. Heilmann, Edward Hertz, | Summary: High-resolution spectroscopy in soft X-rays ($<2$ keV) requires diffractive elements to resolve any astrophysically relevant diagnostics, such as closely spaced lines, weak absorption lines, or line profiles. The Rowland torus geometry describes how […]


Continue.. Concept of a Double Tilted Rowland Spectrograph for X-rays

Concept of a Double Tilted Rowland Spectrograph for X-rays

Kavli Affiliate: Ralf K. Heilmann | First 5 Authors: Hans Moritz Günther, Casey T. DeRoo, Ralf K. Heilmann, Edward Hertz, | Summary: High-resolution spectroscopy in soft X-rays ($<2$ keV) requires diffractive elements to resolve any astrophysically relevant diagnostics, such as closely spaced lines, weak absorption lines, or line profiles. The Rowland torus geometry describes how […]


Continue.. Concept of a Double Tilted Rowland Spectrograph for X-rays