Results 181 to 190 of about 80,128 (249)

Ultra-High-Energy Cosmic Rays from Active Galactic Nuclei Jets: The Role of Supermassive Black Hole Growth and Accretion States [PDF]

Olmo Piana, Hung-Yi Pu
openalex   +1 more source

Optical Variability of Active Galactic Nuclei

Frontiers in Astronomy and Space Sciences, 2017
Szymon Kozłowski
doaj   +1 more source

Radiative cooling induced coherent maser emission in relativistic plasmas. [PDF]

Sci Adv
Bilbao P, Silva T, Silva LO.
europepmc   +1 more source

Stephen Hawking's Warning on Contacting Aliens: A Physics Perspective on the Intelligence Trap. [PDF]

J Biomed Phys Eng
Mortazavi SMJ, Bevelacqua JJ, Mortazavi SA, Rafiepour P, Welsh JS.   +4 more
europepmc   +1 more source

Positioning, navigation, and timing on the Moon and Mars with galactic cosmic rays. [PDF]

iScience
Leone G, Tanaka HKM, Holma M, Krishnan S, Duffy AR, Enqvist T, Kuusiniemi P, Joutsenvaara J, Cerretto G, Cantoni E, Sellone M, Marteau J, Lo Presti D, Szűcs JG, Varga D.   +14 more
europepmc   +1 more source

High-energy particle observations from the Moon. [PDF]

Philos Trans A Math Phys Eng Sci
Dandouras I, Roussos E.
europepmc   +1 more source

Fast radio bursts and the radio perspective on multi-messenger gravitational lensing. [PDF]

Philos Trans A Math Phys Eng Sci
Pastor-Marazuela I.
europepmc   +1 more source

Ensemble X-ray variability of Active Galactic Nuclei. II. Excess Variance and updated Structure Function

, 2016
F. Vagnetti, R. Middei, M. Antonucci, M. Paolillo, Roberto Serafinelli   +4 more
openalex   +2 more sources

Multiphase Gas Nature in the Sub-parsec Region of the Active Galactic Nuclei. III. Eddington Ratio Dependence on the Structures of Dusty and Dust-free Outflows [PDF]

Y. Kudoh, Keiichi Wada, Nozomu Kawakatu, Mariko Nomura   +3 more
openalex   +1 more source