Results 181 to 190 of about 256,920 (281)

Artificial Broadcasts as Galactic Populations. II. Comparing Individualist and Collective Bounds on Broadcast Populations in Single Galaxies

open access: yesThe Astrophysical Journal
The search for extraterrestrial intelligence includes efforts to constrain populations of artificial broadcasts in other galaxies. Previous efforts use individualist methods, searching for single broadcasts with high signal-to-noise ratio. These would be
Brian C. Lacki
doaj   +1 more source

Extragalactic Magnetism with SOFIA (SALSA Legacy Program). VII. A Tomographic View of Far-infrared and Radio Polarimetric Observations through MHD Simulations of Galaxies

open access: yesThe Astrophysical Journal
The structure of magnetic fields in galaxies remains poorly constrained, despite the importance of magnetism in the evolution of galaxies. Radio synchrotron and far-infrared (FIR) polarization and polarimetric observations are the best methods to measure
Sergio Martin-Alvarez   +19 more
doaj   +1 more source

POWERFUL X-RAY EMISSION OF RADIO GALAXIES [PDF]

open access: green, 1967
Виталий Л. Гинзбург
openalex   +1 more source

Minor-merger-induced Star Formation Rejuvenation in an Elliptical Radio-loud Quasar Host, 3C 59

open access: yesThe Astrophysical Journal
We report a rare case where an elliptical radio-loud quasar host, 3C 59, rejuvenates star formation activity through minor mergers with its nearby satellite galaxies.
Yijun Wang   +5 more
doaj   +1 more source

Mid-infrared Properties of Narrow-line Seyfert 1 Galaxies Detected by LoTSS DR2

open access: yesThe Astrophysical Journal
Narrow-line Seyfert 1 galaxies (NLS1s), a subclass of active galactic nuclei (AGNs) in an early stage of the accretion process, are also found to host relativistic jets. However, currently known jetted NLS1s are rare. The majority of NLS1s are undetected
Xu-Liang Fan
doaj   +1 more source

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