Results 121 to 130 of about 184,376 (200)

CHANG-ES. XXX. 10 kpc Radio Lobes in the Sombrero Galaxy

The Astrophysical Journal
We report the discovery of the 10 kpc scale radio lobes in the Sombrero galaxy (NGC 4594), using data from the Continuum Halos in Nearby Galaxies—an Expanded Very Large Array Survey project.
Yang Yang, Jiang-Tao Li, Theresa Wiegert, Zhiyuan Li, Fulai Guo, Judith Irwin, Q. Daniel Wang, Ralf-Juergen Dettmar, Rainer Beck, Jayanne English, Li Ji   +10 more
doaj   +1 more source

Possibleγ-ray Signals from Low-luminosity Active Galactic Nuclei [PDF]

, 2012
Hajime Takami
openalex   +1 more source

The High-mass X-Ray Binary Luminosity Functions of Dwarf Galaxies

The Astrophysical Journal
Drawing from the Chandra archive and using a carefully selected set of nearby dwarf galaxies, we present a calibrated high-mass X-ray binary (HMXB) luminosity function in the low-mass galaxy regime and search for an already hinted at dependence on ...
Robel Geda, Andy D. Goulding, Bret D. Lehmer, Jenny E. Greene, Anish Kulkarni   +4 more
doaj   +1 more source

The diffuse gamma-ray flux from clusters of galaxies. [PDF]

Nat Commun, 2023
Hussain S, Alves Batista R, de Gouveia Dal Pino EM, Dolag K.   +3 more
europepmc   +1 more source

The Intrinsic Sizes of Odd Radio Circles

The Astrophysical Journal
A new class of sources, the so-called odd radio circles (ORCs), have been discovered by recent sensitive, large-area radio continuum surveys. The distances of these sources have so far relied on photometric redshifts of optical galaxies found at the ...
David S. N. Rupke, Alison L. Coil, Kelly E. Whalen, John Moustakas, Christy A. Tremonti, Serena Perrotta   +5 more
doaj   +1 more source

The cosmic ray ionization and γ-ray budgets of star-forming galaxies. [PDF]

Mon Not R Astron Soc, 2023
Krumholz MR, Crocker RM, Offner SSR.
europepmc   +1 more source

The Origin of Radio Emission in Low-Luminosity Active Galactic Nuclei: Jets, Accretion Flows, or Both?

, 2002
J. S. Ulvestad, Luis C. Ho
openalex   +1 more source

Circular Polarization of Simulated Images of Black Holes

The Astrophysical Journal
Models of the resolved Event Horizon Telescope (EHT) sources Sgr A* and M87* are constrained by observations at multiple wavelengths, resolutions, polarizations, and time cadences.
Abhishek V. Joshi, Ben S. Prather, Chi-kwan Chan, Maciek Wielgus, Charles F. Gammie   +4 more
doaj   +1 more source

CONSTRAINING THE MAGNETIC FIELD IN THE ACCRETION FLOW OF LOW-LUMINOSITY ACTIVE GALACTIC NUCLEI

Publications of The Korean Astronomical Society, 2015
Observations show that the accretion ows in low-luminosity active galactic nuclei (LLAGNs) probably have a two-component structure with an inner hot, optically thin, advection dominated accretion ow (ADAF) and an outer truncated cool, optically thick accretion disk. As shown by Taam et al. (2012), within the framework of the disk evaporation model, the
openaire   +3 more sources

Chandra Detects Low-luminosity Active Galactic Nucleus with MBH = 104–106 M⊙ in Nearby (z < 0.5) Dwarf and Star-forming Galaxies

The Astrophysical Journal
We searched the Chandra and XMM archives for 900 Green Pea galaxies to identify signs of active galactic nuclei (AGN). Green peas are low-mass, emission-line galaxies that resemble high-redshift dwarf galaxies. From 29 observations, we detected X-rays in
Mainak Singha, Julissa Sarmiento, Sangeeta Malhotra, James E. Rhoads, L. Y. Aaron Yung, Junxian Wang, Zhen-Ya Zheng, Ruqiu Lin, Keunho Kim, Jialai Kang, Santosh Harish   +10 more
doaj   +1 more source