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200 papers

The LAMOST-\textit{K}2 (L\textit{K}2) project, initiated in 2015, aims to collect low-resolution spectra of targets in the \textit{K}2 campaigns, similar to LAMOST-\textit{Kepler} project. By the end of 2018, a total of 126 L\textit{K}2…

Due to their low latency, high capacity, and seamless worldwide coverage, low Earth orbit (LEO) satellites are essential to the equal access network. Stochastic geometry (SG) is an appropriate method for such a large and irregular system.…

Networking and Internet Architecture · Computer Science 2022-08-02 Yanbo Cao , Derui Gao , Jingyu Xu

Understanding the physics of electromagnetic pulse emission and nozzle damage is critical for the long-term operation of laser experiments with gas targets, particularly at facilities looking to produce stable sources of radiation at high…

Cosmological simulations fail to reproduce realistic galaxy populations without energy injection from active galactic nuclei (AGN) into the interstellar medium (ISM) and circumgalactic medium (CGM); a process called `AGN feedback'.…

Astrophysics of Galaxies · Physics 2024-11-20 C. M. Harrison , A. Girdhar , S. R. Ward

Seismic assessment of buildings and determination of their structural damage is at the forefront of modern scientific research. Since now, several researchers have proposed a number of procedures, in an attempt to estimate the damage…

Machine Learning · Computer Science 2022-03-28 Konstantinos Demertzis , Konstantinos Kostinakis , Konstantinos Morfidis , Lazaros Iliadis

Space-based gravitational wave detection is extremely sensitive to disturbances. The Keplerian configuration cannot accurately reflect the variations in spacecraft configuration. Planetary gravitational disturbances are one of the main…

General Relativity and Quantum Cosmology · Physics 2024-05-16 Yu-Yang Zhang , Geng Li , Bo Wen

Interferometric gravitational-wave detectors like LIGO need to be able to measure changes in their arm lengths of order $10^{-18}~$m or smaller. This requires very high laser power in order to raise the signal above shot noise. One…

Applied Physics · Physics 2019-12-11 S. Biscans , S. Gras , C. D. Blair , J. Driggers , M. Evans , P. Fritschel , T. Hardwick , G. Mansell

The Fermi Gamma ray Space Telescope, launched in 2008, has over 16 years of operations providing gamma ray (8 keV to 300 Gev) spectra science observations of cosmic phenomena. It continues to provide invaluable research for the astrophysics…

Earth and Planetary Astrophysics · Physics 2025-05-22 Wayne Yu , Trevor Williams , Russell Carpenter

Inferences of the nuclear symmetry energy from heavy-ion collisions are currently based on the comparison of measured observables and transport model simulations. Only the expectation values of observables over all considered events are…

Nuclear Theory · Physics 2022-08-24 Yongjia Wang , Zepeng Gao , Hongliang Lü , Qingfeng Li

One of the atom interferometer gravitational wave missions proposed by Dimopoulos et al.1 in 2008 was called AGIS-Sat. 2. It had a suggested gravitational wave sensitivity set by the atom state detection shot noise level that started at 1…

Instrumentation and Methods for Astrophysics · Physics 2015-05-28 Peter L. Bender

Using moving mesh hydrodynamic simulations, we determine the shock propagation and resulting ground velocities for a planet hit by a high velocity impactor. We use our results to determine the atmospheric mass loss caused by the resulting…

Earth and Planetary Astrophysics · Physics 2019-04-17 Almog Yalinewich , Hilke E. Schlichting

With quantitative numerical simulations we show that the secular variations of the even zonal harmonics of the geopotential do affect the measurement of the Lense-Thirring effect with the nodes of LAGEOS and LAGEOS II at a \sim 14% level.…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Lorenzo Iorio

Earth is constantly being bombarded with material from space. Most of the natural material end up being dust grains that litter the surface of Earth, but larger bodies are known to impact every few decades. The most recent large impact was…

Instrumentation and Methods for Astrophysics · Physics 2019-09-05 Ravi teja Nallapu , Jekan Thangavelautham

We carry out a systematic exploration of the effect of pre-impact rotation on the outcomes of low-speed collisions between planetesimals modeled as gravitational aggregates. We use pkdgrav, a cosmology code adapted to collisional problems…

Earth and Planetary Astrophysics · Physics 2014-06-23 Ronald-Louis Ballouz , Derek C. Richardson , Patrick Michel , Stephen R. Schwartz

Soft landing on small celestial bodies (SCBs) poses unique challenges, as gravitational models poorly characterize the higher-order gravitational effects of SCBs. Existing control approaches lack guarantees for safety under gravitational…

Systems and Control · Electrical Eng. & Systems 2026-03-16 Felipe Arenas-Uribe , T. Michael Seigler , Jesse B. Hoagg

Future launches are projected to significantly increase both the number of active satellites and aggregate collision risk in Low Earth Orbit (LEO). In this paper, a dynamical systems theory approach is used to analyze the effect of launch…

Earth and Planetary Astrophysics · Physics 2022-12-05 Celina Pasiecznik , Andrea D'Ambrosio , Daniel Jang , Richard Linares

Detecting changes on the Earth, such as urban development, deforestation, or natural disaster, is one of the research fields that is attracting a great deal of attention. One promising tool to solve these problems is satellite imagery.…

Computer Vision and Pattern Recognition · Computer Science 2022-03-03 Waku Hatakeyama , Shirou Kawakita , Ryohei Izawa , Masanari Kimura

Short gamma-ray bursts (GRBs) are explosive transients caused by binary mergers of compact objects containing at least one neutron star. Multi-wavelength afterglow observations provide constraints on the physical parameters of the jet, its…

Satellite geodesy uses the measurement of the motion of one or more satellites to infer precise information about the Earth's gravitational field. In this work, we consider the achievable precision limits on such measurements by examining…

The project, aimed at the theoretical support of experiments at modern and future accelerators -- TEVATRON, LHC, electron Linear Colliders (TESLA, NLC, CLIC) and muon factories, is presented. Within this project a four-level computer system…

High Energy Physics - Phenomenology · Physics 2009-11-07 A. Andonov , D. Bardin , S. Bondarenko , P. Christova , L. Kalinovskaya , G. Nanava , G. Passarino