Results 61 to 70 of about 52,093 (177)

SF-R You Sure? The Conflicting Role of Star Formation Rates in Constraining the Evolution of Milky Way Analogs in Cosmological Simulations

The Astrophysical Journal
Milky Way analogs (MWAs) have long been studied by astronomers to place our Galaxy within an extragalactic context. With the power of cosmological simulations, we are now able to not only characterize MWAs today, but also watch as they evolve through ...
Alicia M. Savelli, Joshua S. Speagle, J. Ted Mackereth, Norman Murray, Kartheik G. Iyer   +4 more
doaj   +1 more source

Testing the Weak Cosmic Censorship Conjecture via Test Particle–Induced Overcharging/Overspinning of Kerr–Newman–Modified Gravity Black Hole

Advances in Astronomy, Volume 2026, Issue 1, 2026.
We examine the weak cosmic censorship conjecture (WCCC) violation by throwing a charged and rotating test particle into a Kerr–Newman–modified gravity black hole (KN–MOG BH). The result depends on several factors, such as the relative sign of the particle’s charge and its direction of rotation with respect to black hole (BH).
Waqar Ahmad, Abdul Rehman Kashif, Jose Gaite   +2 more
wiley   +1 more source

A Possible “Too-many-satellites” Problem in the Isolated Dwarf Galaxy DDO 161

The Astrophysical Journal Letters
The abundance of satellite galaxies provides a direct test of ΛCDM and galaxy formation physics on small scales. While satellites of Milky Way-mass galaxies are well studied, those of dwarf galaxies remain largely unexplored.
Jiaxuan Li, Jenny E. Greene, Shany Danieli, Scott G. Carlsten, Marla Geha   +4 more
doaj   +1 more source

Heavy Metal Contamination in Chocolates and Candies: Sources, Health Risks, and Analytical Insights

Journal of Chemistry, Volume 2026, Issue 1, 2026.
The presence of heavy metals in chocolates and candies poses growing public health concerns, particularly for children who are frequent consumers. This review consolidates evidence on the occurrence, sources, toxicological impacts, and analytical monitoring of metals, including Pb, Cd, Hg, As, Cr, Ni, and Al, in confectionery products.
Mahmood Ahmed, Maryam, Ali Abbas Aslam, Fatima Aftab, Ahmad Saeed, Mudassar Sanaullah, Muhammad Hassan, Riaz Hussain, Eisha Eiman, Masooma Irfan, Muhammad Yaseen, Muhammad Zaeem Mehdi, Sohini Basu Roy   +12 more
wiley   +1 more source

The Coherent Magnetic Field of the Milky Way

The Astrophysical Journal
We present a suite of models of the coherent magnetic field of the Galaxy based on new divergence-free parametric functions describing the global structure of the field.
Michael Unger, Glennys R. Farrar
doaj   +1 more source

Projection effects on pressure profiles: A case study of the Virgo replica [PDF]

EPJ Web of Conferences
An accurate mass calibration of galaxy clusters is a crucial step towards precise constraints on the cosmological parameters σ8 and Ωm from clusters. Cluster masses can be estimated assuming hydrostatic equilibrium, but several physical and observational
Lebeau T., Sorce J.G., Aghanim N.
doaj   +1 more source

Clinically Inspired Multimodal Treatment Using Induced Neural Stem Cells‐Derived Exosomes Promotes Recovery of Traumatic Brain Injury through Microglial Modulation

Advanced Science, Volume 12, Issue 46, December 11, 2025.
This study explores the therapeutic potential of iNSC‐Exo via local and systemic delivery in TBI mice. It is found that iNSC‐Exo enhances NRXN signaling through Microglia_Nrg3 and Microglia_Rarb, effectively promoting functional and neurological recovery, suggesting a new therapeutic strategy for TBI. Abstract Traumatic brain injury (TBI) poses serious
Jiaojiao Li, Maoxiang Xu, Boyu Cai, Xiangyu Li, Zhanping Liang, Xiaohuan Xia, Haitao Zhang, Zhiwen Zhang, Fei Tan, Jialin Charlie Zheng   +9 more
wiley   +1 more source

The SAGA Survey: I. Satellite Galaxy Populations Around Eight Milky Way Analogs

, 2017
We present the survey strategy and early results of the "Satellites Around Galactic Analogs" (SAGA) Survey. The SAGA Survey's goal is to measure the distribution of satellite galaxies around 100 systems analogous to the Milky Way down to the luminosity ...
Bernstein, Rebecca, Geha, Marla, Hoyle, Ben, Lu, Yu, Mao, Yao-Yuan, Marchi, Sebastian, Marshall, Phil J., Munoz, Ricardo, Tollerud, Erik J., Wechsler, Risa H., Weiner, Benjamin   +10 more
core   +1 more source

Simultaneous Observations of Quasi‐Orthogonal Nighttime MSTIDs at Conjugate African‐European Midlatitude Stations on 4 October 2018

Journal of Geophysical Research: Space Physics, Volume 130, Issue 12, December 2025.
Abstract Two quasi‐orthogonal nighttime medium‐scale traveling ionospheric disturbances (MSTIDs) were observed by conjugate midlatitude all‐sky imagers in Sutherland (32.4° ${}^{\circ}$S, 20.8° ${}^{\circ}$E; magnetic latitude: ∼ ${\sim} $−40.9° ${}^{\circ}$) and Asiago (45.87° ${}^{\circ}$N, 11.53° ${}^{\circ}$E; magnetic latitude: ∼40.3° ${\sim} 40.3{
Zama T. Katamzi‐Joseph, Carlos Martinis, Jonathan J. Makela, Yuichi Otsuka, John Bosco Habarulema, Alicreance Hiyadutuje, Shai Toledano, Mark B. Moldwin, Jeffrey Baumgardner   +8 more
wiley   +1 more source

Metallicity and kinematical clues to the formation of the Local Group

, 2010
The kinematics and elemental abundances of resolved stars in the nearby Universe can be used to infer conditions at high redshift, trace how galaxies evolve and constrain the nature of dark matter.
Aaronson, Abadi, Aoki, Bell, Belokurov, Belokurov, Belokurov, Belokurov, Bienaymé, Binney, Cayrel, Chapman, Chou, Durrell, Elmegreen, Fardal, Fellhauer, Ferguson, Font, Frebel, Fulbright, Gerhard, Gerhard, Gibson, Gilbert, Gilmore, Gilmore, Gilmore, Governato, Grcevich, Holmberg, Huang, Ibata, Ibata, Ibata, Ibata, Ibata, Johnston, Kalirai, Kazantzidis, Khochfar, Klypin, Kobayashi, Koch, Koch, Komatsu, Kuijken, Kuijken, Kusenko, Layden, Letarte, Martin, Martin, Matteucci, McConnachie, McConnachie, McWilliam, Mihos, Monaco, Moore, Mould, Navarro, Nissen, Norris, Ostriker, Percival, Prior, Putman, Quinn, Read, Reddy, Reddy, Robertson, Sadakane, Sbordone, Scannapieco, Schönrich, Sellwood, Shetrone, Shetrone, Siegel, Stadel, Steinmetz, Stewart, Tanaka, Tinsley, Toth, Unavane, Venn, Walker, Watkins, White, Wyse, Wyse, Zolotov, Zucker, Zurek   +96 more
core   +1 more source