Results 81 to 90 of about 3,113 (292)

Models and Simulations for the Photometric LSST Astronomical Time Series Classification Challenge (PLAsTiCC) [PDF]

, 2019
R. Kessler, G. Narayan, A. Avelino, E. Bachelet, R. Biswas, P. J. Brown, D. F. Chernoff, A. J. Connolly, M. Dai, S. Daniel, R. Di Stefano, M. R. Drout, L. Galbany, S. González-Gaitán, M. L. Graham, R. Hložek, E. E. O. Ishida, J. Guillochon, S. W. Jha, D. O. Jones, K. S. Mandel, D. Muthukrishna, A. O’Grady, C. M. Peters, J. R. Pierel, K. A. Ponder, A. Prša, S. Rodney, V. A. Villar   +28 more
openalex   +2 more sources

Physical Constraint Preserving Higher-order Finite Volume Schemes for Divergence-free Astrophysical MHD and RMHD

The Astrophysical Journal
Higher-order finite volume schemes for magnetohydrodynamics (MHD) and relativistic magnetohydrodynamics (RMHD) are very valuable because they allow us to carry out astrophysical simulations with very high accuracy.
Dinshaw S. Balsara, Deepak Bhoriya, Chetan Singh, Harish Kumar, Roger Käppeli, Federico Gatti   +5 more
doaj   +1 more source

Asymmetry of the Ferroelectric Phase Transition in BaTiO3

Advanced Materials, EarlyView.
Phase transitions are typically assumed to behave identically in forward and reverse. This work shows that in the ferroelectric material barium titanate this is not true: heating drives an abrupt, first‐order jump, while cooling gives a smooth, continuous change.
Asaf Hershkovitz, Elangovan Hemaprabha, Rajesh Mandal, Pravin Kavle, Jamil Tanus, Maya Barzilay, Ching‐Che Lin, David Spirito, Semën Gorfman, Bo Wang, Ignacio J. Villar‐García, Neus Domingo, Long‐Qing Chen, Lane W. Martin, Yachin Ivry   +14 more
wiley   +1 more source

The SPHEREx Sky Simulator: Science Data Modeling for the First All-sky Near-infrared Spectral Survey

The Astrophysical Journal Supplement Series
We describe the SPHEREx Sky Simulator (henceforth the Simulator), a software tool designed to model science data for NASA’s SPHEREx mission that will carry out a series of all-sky spectrophotometric surveys at ∼6″ spatial resolution in 102 spectral ...
Brendan P. Crill, Yoonsoo P. Bach, Sean A. Bryan, Jean Choppin de Janvry, Ari J. Cukierman, C. Darren Dowell, Spencer W. Everett, Candice Fazar, Tatiana Goldina, Zhaoyu Huai, Howard Hui, Woong-Seob Jeong, Jae Hwan Kang, Phillip M. Korngut, Jae Joon Lee, Daniel C. Masters, Chi H. Nguyen, Jeonghyun Pyo, Teresa Symons, Volker Tolls, Yujin Yang, Michael Zemcov, Rachel Akeson, Matthew L. N. Ashby, James J. Bock, Tzu-Ching Chang, Yun-Ting Cheng, Yi-Kuan Chiang, Asantha Cooray, Olivier Doré, Andreas L. Faisst, Richard M. Feder, Michael W. Werner   +32 more
doaj   +1 more source

Towards robust determination of non-parametric morphologies in marginal astronomical data: resolving uncertainties with cosmological hydrodynamical simulations [PDF]

, 2021
Mallory Thorp, Asa F. L. Bluck, Sara L. Ellison, R. Maiolino, Christopher J. Conselice, Maan H Hani, Connor Bottrell   +6 more
openalex   +1 more source

Performance Constraints of All‐Perovskite Tandem Solar Cells in Low‐Intensity, Low‐Temperature Environments

Advanced Materials, EarlyView.
All‐perovskite tandem solar cells are evaluated under low‐intensity and low‐temperature (LILT) conditions relevant to space environments. Distinct loss regimes emerge, where weaker entropic mixing causes halide segragation below ≈240 K going along with a strong current imbalance, while poor electron transport in C60 dominates.
Sercan Ozen, Etienne Beier, Francisco Peña‐Camargo, Jarla Thiesbrummel, Gianluca Boccarella, Paria Forozi Sowmeeh, Martin Stolterfoht, Dieter Neher, Kai Oliver Brinkmann, Thomas Riedl, Felix Lang   +10 more
wiley   +1 more source

Converged Simulations of the Nozzle Shock in Tidal Disruption Events

The Astrophysical Journal Letters
A star experiences a tidal disruption event (TDE) after passing too close to a massive black hole. When the debris returns to pericenter on the second passage, it is compressed, leading to the formation of nozzle shocks (in the orbital plane) and pancake
Fangyi (Fitz) Hu, Ilya Mandel, Rebecca Nealon, Daniel J. Price   +3 more
doaj   +1 more source

Deep Space Insights: Machine Learning Revolutionizing Astrophysical Discoveries [PDF]

EPJ Web of Conferences
This paper examines the transformative role of machine learning (ML) in astrophysics. With the exponential growth of astronomical data, traditional methods are often insufficient for effective data management and analysis.
Dutta Samya, Paul Prithwineel
doaj   +1 more source

Field‐Free, Deterministic Giant Spin‐Orbit Torque Switching of 1.3 T Perpendicular Magnetization With Symmetry‐Lifted Topological Surface States

Advanced Materials, EarlyView.
We show a giant, bias‐field free, deterministic, spin‐orbit‐torque switching of perpendicular hard magnets with HC over 1.3 T. By combining the three‐fold 3m symmetry from topological insulator surface states with the rectangular mm2 symmetry from the 2 x 1 intercalation in Cr3Te4, the interface symmetry is significantly reduced into a unidirectional m
He Ren, Yawen Peng, Meixin Cheng, Yu Shi, Reza Asadi, Adam W. Tsen, Guo‐Xing Miao   +6 more
wiley   +1 more source

Prospects for Identifying Pulsar Candidates in Radio Surveys Using Scintillation

The Astrophysical Journal
In our previous paper, we developed a technique for identifying pulsar candidates in interferometric radio images using their distinctive scintillation signatures.
Jitendra Salal, Shriharsh P. Tendulkar, Visweshwar Ram Marthi   +2 more
doaj   +1 more source