Gravitational-Wave Data Analysis with High-Precision Numerical Relativity Simulations of Boson Star mergers

Posted by dbos Cambridge

Kavli Affiliate: Ulrich Sperhake | First 5 Authors: Tamara Evstafyeva, Ulrich Sperhake, Isobel Romero-Shaw, Michalis Agathos, | Summary: Gravitational-wave signals detected to date are commonly interpreted under the paradigm that they originate from pairs of black holes or neutron stars. Here, we explore the alternative scenario of boson-star signals being present in the data stream. […]


Continue.. Gravitational-Wave Data Analysis with High-Precision Numerical Relativity Simulations of Boson Star mergers

Gravitational-wave data analysis with high-precision numerical relativity simulations of boson star mergers

Posted by dbos Cambridge

Kavli Affiliate: Ulrich Sperhake | First 5 Authors: Tamara Evstafyeva, Ulrich Sperhake, Isobel Romero-Shaw, Michalis Agathos, | Summary: Gravitational-wave signals detected to date are commonly interpreted under the paradigm that they originate from pairs of black holes or neutron stars. Here, we explore the alternative scenario of boson-star signals being present in the data stream. […]


Continue.. Gravitational-wave data analysis with high-precision numerical relativity simulations of boson star mergers

Quantum-enabled continuous microwave-to-optics frequency conversion

Posted by dbos Caltech

Kavli Affiliate: Mohammad Mirhosseini | First 5 Authors: Han Zhao, William David Chen, Abhishek Kejriwal, Mohammad Mirhosseini, | Summary: A quantum interface between microwave and optical photons is essential for entangling remote superconducting quantum processors. To preserve fragile quantum states, a transducer must operate efficiently while generating less than one photon of noise referred to […]


Continue.. Quantum-enabled continuous microwave-to-optics frequency conversion

The R-Process Alliance: 2MASS J22132050-5137385, the Star with the Highest-known r-process Enhancement at [Eu/Fe] = +2.45

Posted by dbos MIT

Kavli Affiliate: Anna Frebel | First 5 Authors: Ian U. Roederer, Timothy C. Beers, Kohei Hattori, Vinicius M. Placco, Terese T. Hansen | Summary: We present stellar parameters and chemical abundances of 47 elements detected in the bright (V = 11.63) very metal-poor ([Fe/H] = -2.20 +- 0.12) star 2MASS J22132050-5137385. We observed this star […]


Continue.. The R-Process Alliance: 2MASS J22132050-5137385, the Star with the Highest-known r-process Enhancement at [Eu/Fe] = +2.45

TDCOSMO. XVI. Measurement of the Hubble Constant from the Lensed Quasar WGD$,$2038$-$4008

Posted by dbos Stanford

Kavli Affiliate: Philip J. Marshall | First 5 Authors: Kenneth C. Wong, Frédéric Dux, Anowar J. Shajib, Sherry H. Suyu, Martin Millon | Summary: Time-delay cosmography is a powerful technique to constrain cosmological parameters, particularly the Hubble constant ($H_{0}$). The TDCOSMO collaboration is performing an ongoing analysis of lensed quasars to constrain cosmology using this […]


Continue.. TDCOSMO. XVI. Measurement of the Hubble Constant from the Lensed Quasar WGD$,$2038$-$4008

TDCOSMO. XVII. Measurement of the Hubble Constant from the Lensed Quasar WGD$,$2038$-$4008

Posted by dbos Stanford

Kavli Affiliate: Philip J. Marshall | First 5 Authors: Kenneth C. Wong, Frédéric Dux, Anowar J. Shajib, Sherry H. Suyu, Martin Millon | Summary: Time-delay cosmography is a powerful technique to constrain cosmological parameters, particularly the Hubble constant ($H_{0}$). The TDCOSMO collaboration is performing an ongoing analysis of lensed quasars to constrain cosmology using this […]


Continue.. TDCOSMO. XVII. Measurement of the Hubble Constant from the Lensed Quasar WGD$,$2038$-$4008

The MAGPI Survey: Massive slow rotator population in place by $z sim 0.3$

Posted by dbos Peking

Kavli Affiliate: Yingjie Peng | First 5 Authors: Caro Derkenne, Richard M. McDermid, Francesco D’Eugenio, Caroline Foster, Aman Khalid | Summary: We use the `Middle Ages Galaxy Properties with Integral field spectroscopy’ (MAGPI) survey to investigate whether galaxies have evolved in the distribution of their stellar angular momentum in the past 3-4 Gyr, as probed […]


Continue.. The MAGPI Survey: Massive slow rotator population in place by $z sim 0.3$

Reinforcement Tuning for Detecting Stances and Debunking Rumors Jointly with Large Language Models

Posted by dbos Caltech

Kavli Affiliate: Wei Gao | First 5 Authors: Ruichao Yang, Wei Gao, Jing Ma, Hongzhan Lin, Bo Wang | Summary: Learning multi-task models for jointly detecting stance and verifying rumors poses challenges due to the need for training data of stance at post level and rumor veracity at claim level, which are difficult to obtain. […]


Continue.. Reinforcement Tuning for Detecting Stances and Debunking Rumors Jointly with Large Language Models

History-Aware Planning for Risk-free Autonomous Navigation on Unknown Uneven Terrain

Posted by dbos Berkeley

Kavli Affiliate: Xiang Zhang | First 5 Authors: Yinchuan Wang, Nianfei Du, Yongsen Qin, Xiang Zhang, Rui Song | Summary: It is challenging for the mobile robot to achieve autonomous and mapless navigation in the unknown environment with uneven terrain. In this study, we present a layered and systematic pipeline. At the local level, we […]


Continue.. History-Aware Planning for Risk-free Autonomous Navigation on Unknown Uneven Terrain

Fermion-fermion interaction driven phase transitions in the rhombohedral trilayer graphene

Posted by dbos Peking

Kavli Affiliate: Jing Wang | First 5 Authors: Qiao-Chu Zhang, Jing Wang, , , | Summary: The effects of short-range fermion-fermion interactions on the low-energy properties of the rhombohedral trilayer graphene are comprehensively investigated by virtue of the momentum-shell renormalization group method. We take into account all one-loop corrections and establish the energy-dependent coupled evolutions […]


Continue.. Fermion-fermion interaction driven phase transitions in the rhombohedral trilayer graphene