Results 61 to 70 of about 1,359 (236)
Why Artificial Disruption Is Not a Concern for Current Cosmological Simulations
The Astrophysical JournalRecent studies suggest that cold dark matter subhalos are hard to disrupt and almost all cases of subhalo disruption observed in numerical simulations are due to numerical effects.
Feihong He, Jiaxin Han, Zhaozhou Li
doaj +1 more source
DARK MATTER HALOS IN GALAXIES AND GLOBULAR CLUSTER POPULATIONS [PDF]
The Astrophysical Journal, 2014 We combine a new, comprehensive database for globular cluster populations in all types of galaxies with a new calibration of galaxy halo masses based entirely on weak lensing. Correlating these two sets of data, we find that the mass ratio $ \equiv M_{GCS}/M_{h}$ (total mass in globular clusters, divided by halo mass) is essentially constant at ...
Michael J. Hudson +2 more
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Advanced Intelligent Systems, EarlyView.This article proposes a lightweight YOLOv4‐based detection model using MobileNetV3 or CSPDarknet53_tiny, achieving 30+ FPS and higher mAP. It also presents a ShuffleNet‐based classification model with transfer learning and GAN‐augmented images, improving generalization and accuracy.
Qingyang Liu, Yanrong Hu, Hongjiu Liu
wiley +1 more source
Slow galaxy growth within rapidly growing dark matter halos [PDF]
AIP Conference Proceedings, 2009 7 pages, 4 figures, to be published in the DSU09 online conference ...
Michael J. I. Brown +2 more
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Astronomische Nachrichten, EarlyView.ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik +12 more
wiley +1 more source
Shaping the Milky Way: The Interplay of Mergers and Cosmic Filaments
The Astrophysical JournalThe large-scale morphology of Milky Way (MW)–mass dark matter halos is shaped by two key processes: filamentary accretion from the cosmic web and interactions with massive satellites.
Arpit Arora +15 more
doaj +1 more source
The Signatures of Self-interacting Dark Matter and Subhalo Disruption on Cluster Substructure
The Astrophysical Journal, 2022 The abundance, distribution, and inner structure of satellites of galaxy clusters can be sensitive probes of the properties of dark matter. We run 30 cosmological zoom-in simulations with self-interacting dark matter (SIDM), with a velocity-dependent ...
Joy Bhattacharyya +6 more
doaj +1 more source
THE SPHERICALIZATION OF DARK MATTER HALOS BY GALAXY DISKS [PDF]
The Astrophysical Journal, 2010 Cosmological simulations indicate that cold dark matter (CDM) halos should be triaxial. Verifying observationally this theoretical prediction is, however, less than straightforward because the assembly of galaxies is expected to modify the halo shapes and to render them more axisymmetric.
Kazantzidis, Stelios +2 more
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Batteries &Supercaps, EarlyView.Cycling water‐in‐salt batteries involves complex degradation processes that require multiprobe analysis. Using online electrochemical mass spectrometry (OEMS), postmortem X‐ray photoemission spectroscopy (XPS) (including hard‐XPS), and scanning electron microscopy (SEM), the degradation mechanisms are examined in composite electrodes (TiS2 and LiFePO4)
Célia Doublet +7 more
wiley +1 more source
Painting galaxies into dark matter haloes using machine learning [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 15 pages, 10 figures, 1 table, accepted version from ...
Agarwal, Shankar +2 more
openaire +2 more sources