Results 1 to 10 of about 120,169 (292)

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

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

An Ultrafast Image Simulation Technique with Spatially Variable Point-spread Functions

The Astronomical Journal
Simulated images are essential in algorithm development and instrument testing for optical telescopes. During real observations, images obtained by optical telescopes are affected by spatially variable point-spread functions (PSFs), a crucial effect ...
Zeyu Bai, Peng Jia, Jiameng Lv, Xiang Zhang, Wennan Xiang, Lin Nie   +5 more
doaj   +1 more source

Electrostatic Modeling of Dust Impact Signals Based on the Expanding Plasma Cloud

The Astrophysical Journal
Signals generated by dust impacting spacecraft can be detected by electric field instruments. These signals have been simulated by numerous models. However, few models can accurately characterize the expansion of the plasma cloud generated by dust impact.
Han Wu, Shengyi Ye, Tao Chen, Jian Wang, Guangzhou Wang   +4 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

Orbital Capture of Ejecta into Periodic Orbits around Binary Asteroid (65803) Didymos

The Planetary Science Journal
The successful impact of the Double Asteroid Redirection Test (DART) spacecraft on Dimorphos enabled the first-ever extensive observation of a postimpact ejecta tail from a binary asteroid system.
Xiaoyu Fu, Flavia Saveriano, Stefania Soldini, Fabio Ferrari, Derek C. Richardson, Masatoshi Hirabayashi, Alessandro Rossi, Eugene G. Fahnestock, Tony L. Farnham, Arnold Gucsik, Stravro L. Ivanovski, Martin Jutzi, Akos Kereszturi, Jian-Yang Li, Francesco Marzari, Colby C. Merrill, Fernando Moreno, Sabina D. Raducan, Juan Luis Rizos, Gonzalo Tancredi, Josep M. Trigo-Rodriguez, Kleomenis Tsiganis, Stephan Ulamec, Yang Yu, Yun Zhang, Nancy Chabot, Andrew Rivkin, Adriano Campo Bagatin, Patrick Michel   +28 more
doaj   +1 more source

Chromaticity-optimized Antenna Design and Bayesian Foreground Validation for the CANTAR Global 21 cm Experiment

The Astrophysical Journal
Detecting the global 21 cm signal from the epoch of reionization remains a major observational challenge due to bright foregrounds and instrumental systematics.
Michelle Mora, Germán Chaparro, Juan D. Guerrero, Catalina Alzate, Juan P. Urrego, Jimena Giraldo, Pablo Cuartas-Restrepo, Julian Rodriguez-Ferreira, Oscar Restrepo   +8 more
doaj   +1 more source

Magnetically Arrested Circumbinary Accretion Flows

The Astrophysical Journal Letters
Binary systems with comparable masses and a surrounding accretion disk can accrete gas through spiral accretion streams penetrating the central cavity formed by tidal interactions.
Elias R. Most, Hai-Yang Wang
doaj   +1 more source

Cosmic Sands. II. Challenges in Predicting and Measuring High-z Dust Temperatures

The Astrophysical Journal
In the current era of high- z galaxy discovery with JWST and the Atacama Large Millimeter/submillimeter Array, our ability to study the stellar populations and interstellar medium conditions in a diverse range of galaxies at Cosmic Dawn has rapidly ...
Sidney Lower, Desika Narayanan, Chia-Yu Hu, George C. Privon   +3 more
doaj   +1 more source

Surface Interactions in Photon Monte Carlo Simulations

The Astrophysical Journal
We implement a comprehensive simulation of photon surface interactions using a Monte Carlo approach. This is effective in simulating the interaction of light with telescope mirrors and lenses.
J. R. Peterson, D. Valls-Gabaud, A. Dutta, C. Kim, G. Sembroski   +4 more
doaj   +1 more source