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Ray tracing algorithms that compute pulse profiles from rotating neutron stars are essential tools for constraining neutron-star properties with data from missions such as NICER. However, the high computational cost of these simulations…

High Energy Astrophysical Phenomena · Physics 2025-06-16 Preston G. Waldrop , Dimitrios Psaltis , Tong Zhao

We use the IllustrisTNG cosmological hydrodynamical simulation to study the rotation curves of galaxies in the local universe. To do that, we first select the galaxies with 9.4 $<$ $\log{(M_\mathrm{star}/M_\odot)}$ $<$ 11.5 to make a sample…

Astrophysics of Galaxies · Physics 2025-03-14 Daeun Jeong , Ho Seong Hwang , Haeun Chung , Yongmin Yoon

As next-generation imaging instruments and interferometers search for planets closer to their stars, they must contend with increasing orbital motion and longer integration times. These compounding effects make it difficult to detect faint…

We present the High-z Kinematic Corpus Z1, a structured machine-readable dataset of ALMA [C ii] 158 um morpho-kinematic data for 31 star-forming main-sequence galaxies at z = 4.26-5.68 drawn from the ALPINE survey (Jones et al. 2021; Le…

Astrophysics of Galaxies · Physics 2026-05-26 David C. Flynn

This paper proposes an optimized mapping of the FIR filter algorithm that enhances the rate of a reconfigurable computer over a basic mapping previously proposed [1]. It also presents a new interconnection scheme in the reconfigurable part…

Signal Processing · Electrical Eng. & Systems 2019-04-12 Hassan Diab , Issam Damaj , Fadi Kurdahi

We present a system for the boresighting of sensors using inertial measurement devices as the basis for developing a range of dynamic real-time sensor fusion applications. The proof of concept utilizes a COTS FPGA platform for sensor fusion…

Hardware Architecture · Computer Science 2011-11-09 Steve Chappell , Alistair Macarthur , Dan Preston , Dave Olmstead , Bob Flint , Chris Sullivan

A new international Pilot Project for the re-determination of the ICRF was initiated by the International VLBI Service for Geodesy and Astrometry (IVS) in January 2005. The purpose of this project is to compare the individual CRF solutions…

Astrophysics · Physics 2009-03-19 Julia Sokolova , Zinovy Malkin

We present a modified version of the friends-of-friends (FOF) structure finding algorithm, designed specifically to locate groups or clusters of galaxies in photometric redshift datasets. The main objective of this paper is to show that…

Astrophysics · Physics 2009-11-10 C. S. Botzler , J. Snigula , R. Bender , U. Hopp

Regenerated (FRF curves), synthesis of (FRF) curves there are two main requirement in the form of response model, The first being that of regenerating "Theoretical" curve for the frequency response function actually measured and analysis…

Computational Engineering, Finance, and Science · Computer Science 2012-08-21 Hisham A. H. Al-Khazali , Mohamad R. Askari

Classifier-free guidance (CFG) is the workhorse for steering large diffusion models toward text-conditioned targets, yet its native application to rectified flow (RF) based models provokes severe off-manifold drift, yielding visual…

Computer Vision and Pattern Recognition · Computer Science 2025-10-10 Shreshth Saini , Shashank Gupta , Alan C. Bovik

We use $\Lambda$CDM cosmological hydrodynamical simulations to explore the kinematics of gaseous discs in late-type dwarf galaxies. We create high-resolution 21-cm 'observations' of simulated dwarfs produced in two variations of the EAGLE…

Trajectory optimization is a powerful tool for robot motion planning and control. State-of-the-art general-purpose nonlinear programming solvers are versatile, handle constraints effectively and provide a high numerical robustness, but they…

Optimization and Control · Mathematics 2023-07-31 Lander Vanroye , Ajay Sathya , Joris De Schutter , Wilm Decré

Two methods for mass profiles reconstruction in disc-like galaxies are presented in this work, the first is done with the fit of the rotation curve based on the data of circular velocity which are obtained observationally in a stars system,…

Astrophysics of Galaxies · Physics 2021-04-22 Itamar López , Leonardo Castañeda

Light curves produced by wide-field exoplanet transit surveys such as CoRoT, Kepler, and TESS are affected by sensor-wide systematic noise which is correlated both spatiotemporally and with other instrumental parameters such as photometric…

Earth and Planetary Astrophysics · Physics 2023-12-05 Jamila Taaki , Athol Kemball , Farzad Kamalabadi

We investigate the performance of group finding algorithms that reconstruct galaxy groups from the positional information of tracer galaxies that are observed in redshift surveys carried out with multiplexed spectrographs. We use mock…

Cosmology and Nongalactic Astrophysics · Physics 2021-04-28 Tobias J. Looser , Simon J. Lilly , Larry P. T. Sin , Bruno M. B. Henriques , Roberto Maiolino , Michele Cirasuolo

The two-point correlation function (2PCF) is the most widely used tool for quantifying the spatial distribution of galaxies. Since the distribution of galaxies is determined by galaxy formation physics as well as the underlying cosmology,…

Cosmology and Nongalactic Astrophysics · Physics 2020-01-08 Manodeep Sinha , Lehman H. Garrison

In this paper a homomorphic filtering scheme is proposed to improve the estimation of the planet/star radius ratio in astronomical transit signals. The idea is to reduce the effect of the short-term earth atmosphere variations. A two-step…

Instrumentation and Methods for Astrophysics · Physics 2017-10-03 Rodrigo Mahu , Patricio Rojo , Ali Dehghan Firoozabadi , Ismael Soto , Elyar Sedaghati , Nestor Becerra Yoma

Advancements in artificial intelligence (AI) have greatly benefited plant phenotyping and predictive modeling. However, unrealized opportunities exist in leveraging AI advancements in model parameter optimization for parameter fitting in…

Computational Engineering, Finance, and Science · Computer Science 2025-01-28 Tong Lei , Kyle T. Rizzo , Brian N. Bailey

PlanetPack, initially released in 2013, is a command-line software aimed to facilitate exoplanets detection, characterization, and basic dynamical $N$-body simulations. This paper presents the third major release of PlanetPack that…

Instrumentation and Methods for Astrophysics · Physics 2018-11-05 Roman V. Baluev

This paper presents the Visual Optical Recognition Telemetry EXtraction (VORTEX) system for extracting and analyzing drone telemetry data from First Person View (FPV) Uncrewed Aerial System (UAS) footage. VORTEX employs MMOCR, a…

Computer Vision and Pattern Recognition · Computer Science 2025-06-10 James E. Gallagher , Edward J. Oughton
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