Results 31 to 40 of about 37,734 (223)

Identification of the Early Fermi LAT Gamma-Ray Bright Objects with Extragalactic VLBI sources

, 2009
A list of 205 gamma-ray strong objects was reported recently as a result of a 3-month integration with the Large Area Telescope on board the Fermi Gamma-Ray Space Telescope.
Abdo, Abdo, Atwood, Bassani, Beasley, Fey, Fomalont, Fomalont, Hartman, Healey, Healey, Helmboldt, Kovalev, Kovalev, Kovalev, Lanyi, Lee, Lister, Lister, Lovell, Lähteenmäki, Ma, Mattox, Mirabal, Mirabal, Ojha, Petrov, Petrov, Petrov, Petrov, Pollack, Sowards-Emmerd, Sowards-Emmerd, Y. Y. Kovalev   +33 more
core   +1 more source

The evolution of extragalactic radio sources

, 2010
A model for the evolution of low-luminosity radio galaxies is presented. In the model, the lobes inflated by low-power jets are assumed to expand in near pressure-balance against the external medium.
Abramowitz, Blundell, Bîrzan, Condon, Eilek, Elaine M. Sadler, Falle, Fanaroff, Fedorenko, Garrington, Gopal-Krishna, Jaffe, Kaiser, Kardashev, Longair, Melrose, Mulchaey, Qinghuan Luo, Shklovskii, Slee   +19 more
core   +1 more source

Radio Wavelength Constraints on the Sources of the Far Infrared Background [PDF]

, 1998
The cosmic far infrared background detected recently by the COBE-DIRBE team is presumably due, in large part, to the far infrared (FIR) emission from all galaxies.
Bridle A. H., Cox M. J., D. B. Haarsma, Kron R. G., Madau P., Puget J.-L., R. B. Partridge, Rieke G. H., Toffolatti L.   +8 more
core   +3 more sources

Powerful Radio Sources in the Southern Sky. III. First Results of the Optical Spectroscopic Campaign

The Astrophysical Journal Supplement Series
We recently built the G4Jy-3CRE catalog of extragalactic radio sources. This catalog lists 264 powerful radio sources selected with similar criteria to those of the revised Third Cambridge Catalog, but visible from the Southern Hemisphere.
A. García-Pérez, H. A. Peña-Herazo, A. Jimenez-Gallardo, V. Chavushyan, F. Massaro, S. V. White, A. Capetti, B. Balmaverde, W. R. Forman, C. C. Cheung, J. P. Madrid, C. Mazzucchelli, N. P. H. Nesvadba, I. Andruchow, S. Cellone, R. Grossová, A. Paggi, E. Sani, V. Reynaldi, R. P. Kraft, C. Leto   +20 more
doaj   +1 more source

A Multiwavelength Investigation of Unidentified EGRET Sources

, 2005
Statistical studies indicate that the 271 point sources of high-energy gamma rays belong to two groups: a Galactic population and an isotropic extragalactic population.
A.U. Landolt, D. Sowards-Emmerd, D. Torres, M. Lewis, O. Reimer, P. Wallace, P.M. Wallace, R.C. Hartman, S. Bloom, S.D. Bloom, S.D. Bloom, U. Borgeest   +11 more
core   +2 more sources

Summing up Ultra-High-Energy Cosmic Rays from Radio Galaxies [PDF]

, 2018
Radio galaxies are intensively discussed as the sources of cosmic rays observed above about 3 EeV, called ultra-high-energy cosmic rays (UHECRs). Here, the key issues from a recent investigation are summed up, where the individual characteristics of ...
Eichmann, Björn
core   +3 more sources

Deep Space Network Radio Science and Ground‐Based Planetary Radar in the Next Decade

Radio Science, Volume 60, Issue 7, July 2025.
Abstract The Deep Space Network (DSN) has been a core operational element of NASA's crewed and robotic exploration of the Solar System since the early 1960s. The primary role of the DSN has been to acquire telemetry and navigation data, but over the years, its radiometric and radar capabilities have expanded to form a system for obtaining unique ...
R. S. Park, J. E. Riedel, N. Rodriguez‐Alvarez, M. Brozovic, L. A. M. Benner, P. Vergados, D. Buccino, C. S. Jacobs, L. S. Locke, S. W. Asmar, R. Castano, T. J. W. Lazio, J. Jao, C. Lee   +13 more
wiley   +1 more source

Isolated Neutron Stars as Science Validation for XMM2ATHENA: Ensuring Robust Data for Future X‐Ray Astronomy

Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.
ABSTRACT The discovery of radio‐quiet, x‐ray thermally emitting isolated neutron stars (XINSs) in the ROSAT All‐Sky Survey revealed a previously overlooked component of the neutron star population. Advancements in x‐ray instrumentation and the availability of deep, wide‐area optical surveys now enable us to explore XINSs at fainter x‐ray fluxes and ...
Adriana Mancini Pires, Christian Motch, Axel Schwope, Iris Traulsen, Jean Ballet, Sudip Chakraborty, David Homan, Jan Kurpas, Ada Nebot Gomez‐Moràn, François‐Xavier Pineau, Hugo Tranin, Natalie Webb   +11 more
wiley   +1 more source

An Updated Repository of Sub-mJy Extragalactic Source-Count Measurements in the Radio Domain

Galaxies
We present an updated repository of sub-mJy extragalactic radio source counts between 150 MHz and 10 GHz, incorporating recent advances in radio surveys and observational techniques. By compiling and refining previous datasets, we provide a comprehensive
Vincenzo Galluzzi, Meriem Behiri, Marika Giulietti, Andrea Lapi   +3 more
doaj   +1 more source

Extragalactic radio surveys in the pre-Square Kilometre Array era [PDF]

Royal Society Open Science, 2017
The era of the Square Kilometre Array is almost upon us, and pathfinder telescopes are already in operation. This brief review summarizes our current knowledge of extragalactic radio sources, accumulated through six decades of continuum surveys at the ...
Chris Simpson
doaj   +1 more source