Essential Radio Astronomy
The 100-m Green Bank Telescope (GBT). Image credit: NRAO/AUI/NSF.
The 305-m Arecibo Telescope. Image courtesy of the NAIC–Arecibo Observatory, a facility of the NSF.
The Westerbork Synthesis Radio Telescope (WSRT) is an east–west linear array of equatorially mounted dishes. Image courtesy of Adrian Renting.
The 1 km “D” configuration of the Jansky Very Large Array (VLA) of 27 25-m telescopes located on the plains of San Augustin in New Mexico at 2100 m elevation. Image credit: NRAO/AUI/NSF.
The Atacama Large Millimeter Array (ALMA) is on an extremely high (5000 m) and dry desert plain near Cerro Chajnator in Chile. Image credit: ALMA (ESO/NAOJ/NRAO), J. Guarda (ALMA).
The CSIRO Australian Square Kilometre Array Pathfinder (ASKAP) with its multibeam phased-array feed designed to survey the sky rapidly. Image credit: CSIRO and Natasha Hurley-Walker.
One tile of the Murchison Widefield Array (MWA).
Image credit: CSIRO.
The core of LOFAR (LOw Frequency Array for Radio astronomy). Image credit: ASTRON and Top-Foto, Assen.
Dust emission from the protoplanetary disk of HL Tau. Image credit: ALMA (NRAO/ESO/NAOJ); C. Brogan, B. Saxton (NRAO/AUI/NSF).
Composite image of the Crab Nebula. Blue indicates X-rays (from Chandra), green is optical (from the HST), and red is radio (from the VLA). Image credit: J. Hester (ASU), CXC, HST, NRAO, NSF, NASA.
The 21-cm H
line highlights cold hydrogen tidally torn from the galaxies in the M81 group
. Image credit: NRAO/AUI/NSF Investigators: Min S. Yun, Paul T. P. Ho, & K. Y. Lo.
The interaction history of the Antennae Galaxies NGC 4038 and NGC 4039 is revealed by their long H
tidal tails (blue) and obscured star formation traced by CO emission (orange insert). Image credit: B. Saxton (NRAO/AUI/NSF) from data provided by ALMA (ESO/NAOJ/NRAO) and NASA/ESA.
Radio continuum emission from M82. Image credit: Josh Marvil (NM Tech/NRAO), Bill Saxton (NRAO/AUI/NSF), Hubble (NASA/ESA/STScI).
The radio galaxy Hercules A (3C 348). Image credit: NASA, ESA, S. Baum and C. O’Dea (RIT), R. Perley and W. Cotton (NRAO/AUI/NSF), and the Hubble Heritage Team (STScI/AURA).
The radio source (red) in the galaxy cluster MS0735.6+7421 has displaced the X-ray emitting gas (blue)
. Image credit: NASA, ESA, CXC, STScI, B. McNamara, NRAO/AUI/NSF, and L. Birzan & team.
Cosmic microwave background fluctuations