Results 201 to 210 of about 78,490 (277)

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

Total Flux Density Variations in Extragalactic Radio Sources. III. Doppler Boosting Factors, Lorentz Factors, and Viewing Angles for Active Galactic Nuclei [PDF]

, 1999
A. Lähteenmäki, E. Valtaoja
openalex   +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

Unified Schemes for Radio-Loud Active Galactic Nuclei

, 1995
C. M. Urry, P. Padovani
openalex   +1 more source

An X‐Ray Spectral Survey of Radio‐loud Active Galactic Nuclei withASCA [PDF]

, 1999
R. M. Sambruna, Michael Eracleous, R. F. Mushotzky   +2 more
openalex   +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

Optical evidence for the unification of active galactic nuclei and quasi-stellar objects. [PDF]

Proc Natl Acad Sci U S A, 1995
Miller JS.
europepmc   +1 more source

X‐Ray Lines in Active Galactic Nuclei and Photoionized Gases [PDF]

, 1996
H. Netzer
openalex   +1 more source

Optical Variability of Active Galactic Nuclei

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