Results 101 to 110 of about 1,127,100 (156)

On the local radio luminosity function of galaxies. I: the Virgo cluster [PDF]

arXiv, 1998
We cross-correlate the galaxies brighter than mB=18 in the Virgo cluster with the radio sources in the NVSS survey (1.4 GHz), resulting in 180 radio-optical identifications. We determine the radio luminosity function of the Virgo galaxies, separately for the early- and late-types. Late-type galaxies develop radio sources with a probability proportional
arxiv  

The Magnetosphere‐Ionosphere‐Ground Responses to the May 2024 Super Solar Storm

Space Weather, Volume 23, Issue 4, April 2025.
Abstract Earth suffered the attack of the strongest geomagnetic storm in the last 20 years (Kp = 9, Dst∼ ${\sim} $ −400 nT) occurred on 11 May 2024. Taking advantage of the LEO multi‐parameter CSES satellite (launched in 2018) with a large inclination angle 97° $97{}^{\circ}$, with the joint observations of NOAA and GOES, we present a comprehensive ...
Zhenxia Zhang, Fang Zhang, Lu Wang, Xinqiao Li, Zeren Zhima, Yongfu Wang, Yanyan Yang, Dehe Yang, Shujie Li, Wei Chu, Na Zhou, Dedong Wang, Dali Zhang, Roberto Battiston, Roberto Iuppa, Xuhui Shen   +15 more
wiley   +1 more source

Radio Galaxy Spectra [PDF]

arXiv, 2001
Radio spectra of radio galaxies are often ascribed a simple power law form ($S_{\nu} \propto \nu^{\alpha}$) with the spectral index, $\alpha$, being of order -0.7. However, all radio galaxies deviate from this simple power law behaviour. In this paper we derive simple expressions for the average rest-frame spectra of FRI and FRII radio galaxies.
arxiv  

Diagnostic Modalities in Sleep Disordered Breathing: Current and Emerging Technology and Its Potential to Transform Diagnostics

Respirology, Volume 30, Issue 4, Page 286-302, April 2025.
ABSTRACT Underpinned by rigorous clinical trial data, the use of existing home sleep apnoea testing is now commonly employed for sleep disordered breathing diagnostics in most clinical sleep centres globally. This has been a welcome addition for the field given the considerable burden of disease, cost, and access limitations with in‐laboratory ...
Lucía Pinilla, Ching Li Chai‐Coetzer, Danny J. Eckert   +2 more
wiley   +1 more source

Cosmic Rays and the Askaryan Effect Reveal Subsurface Structure and Buried Ice on the Moon

Geophysical Research Letters, Volume 52, Issue 6, 28 March 2025.
Abstract We present the first full‐wavelength numerical simulations of the electric field generated by cosmic ray impacts into the Moon. Billions of cosmic rays fall onto the Moon every year. Ultra‐high energy cosmic ray impacts produce secondary particle cascades within the regolith and subsequent coherent, wide‐bandwidth, linearly‐polarized radio ...
E. S. Costello, R. R. Ghent, A. Romero‐Wolf, P. W. Gorham, P. G. Lucey, C. J. Tai Udovicic, P. Linton, A. Ludwig, K. McBride, C. Miki, E. Oberla, J. Rolla, A. Jung   +12 more
wiley   +1 more source

Cosmic ray feedback in galaxies and galaxy clusters: A pedagogical introduction and a topical review of the acceleration, transport, observables, and dynamical impact of cosmic rays. [PDF]

Astron Astrophys Rev, 2023
Ruszkowski M, Pfrommer C.
europepmc   +1 more source

Forming intracluster gas in a galaxy protocluster at a redshift of 2.16. [PDF]

Nature, 2023
Di Mascolo L, Saro A, Mroczkowski T, Borgani S, Churazov E, Rasia E, Tozzi P, Dannerbauer H, Basu K, Carilli CL, Ginolfi M, Miley G, Nonino M, Pannella M, Pentericci L, Rizzo F.   +15 more
europepmc   +1 more source

The Ellis-Baldwin test. [PDF]

Philos Trans A Math Phys Eng Sci
Secrest NJ.
europepmc   +1 more source

Polarized thermal emission from dust in a galaxy at redshift 2.6. [PDF]

Nature, 2023
Geach JE, Lopez-Rodriguez E, Doherty MJ, Chen J, Ivison RJ, Bendo GJ, Dye S, Coppin KEK.   +7 more
europepmc   +1 more source

A decade of sub-arcsecond imaging with the International LOFAR Telescope. [PDF]

Astrophys Space Sci
Morabito LK, Jackson N, de Jong J, Escott E, Groeneveld C, Mahatma V, Petley J, Sweijen F, Timmerman R, van Weeren RJ.   +9 more
europepmc   +1 more source