Results 191 to 200 of about 50,755 (263)

A combined optical and X-ray study of unobscured type 1 active galactic nuclei - I. Optical spectra and spectral energy distribution modelling [PDF]

, 2012
Chichuan Jin, Martin Ward, Chris Done, Jonathan Gelbord   +3 more
openalex   +1 more source

Observation of an ultra-high-energy cosmic neutrino with KM3NeT. [PDF]

Nature
KM3NeT Collaboration.
europepmc   +1 more source

X-ray properties of coronal emission in radio quiet Active Galactic Nuclei [PDF]

Sibasish Laha, Cláudio Ricci, John C. Mather, Ehud Behar, Luigi Gallo, Frédéric Marin, Rostom Mbarek, Amelia Hankla   +7 more
openalex   +1 more source

New nearby active galactic nuclei among INTEGRAL and RXTE X-ray sources [PDF]

, 2006
I. Bikmaev, R. Sunyaev, M. Revnivtsev, R. Burenin   +3 more
openalex   +1 more source

X-ray astronomy from the lunar surface. [PDF]

Philos Trans A Math Phys Eng Sci
Gandhi P.
europepmc   +1 more source

Discovery of spectacular quasar-driven superbubbles in red quasars. [PDF]

Sci Adv, 2023
Shen L, Liu G, He Z, Zakamska NL, Glikman E, Greene JE, Hu W, Mou G, Wylezalek D, Rupke DSN.   +9 more
europepmc   +1 more source

The Luminosity Function of X‐Ray–selected Active Galactic Nuclei: Evolution of Supermassive Black Holes at High Redshift [PDF]

, 2008
J. D. Silverman, Paul Green, Wayne Barkhouse, D.‐W. Kim, Minsun Kim, B. J. Wilkes, R. A. Cameron, G. Hasinger, Buell T. Jannuzi, M. G. Smith, Paul S. Smith, H. Tananbaum   +11 more
openalex   +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

Soft versus hard X-ray emission in active galactic nuclei: partialcovering and warm-plus-cold absorber models [PDF]

, 1996
M. T. Ceballos, X. Barcons
openalex   +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