4 items found
Photographer is exactly "Optical/radio superposition by Alan Bridle"
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Radio Galaxy 3C296 Radio/Optical Superposition
Creator:Legacy Astronomical Images
Series:Active Galactic Nuclei Series
Unit:Radio Galaxies Unit
Type:Legacy Astronomical Image
Description:This is a false-color image of the radio galaxy 3C296, associated with the elliptical galaxy NGC5532. Blue colors show the distribution of stars, made from an image from the Digitized Second Palomar Sky Survey, and red colors show the radio radiation as imaged by the VLA, measured at a wavelength of 20cm. Several other galaxies are seen in this image, but are not directly related to the radio source. The radio emission is from relativistic streams of high energy particles generated by the radio source in the center of the radio galaxy. Astronomers believe that the jets are fueled by material accreting onto a super-massive black hole. The high energy particles are confined to remarkably well collimated jets, and are shot into extragalactic space at speeds approaching the speed of light, where they eventually balloon into massive radio lobes. The plumes in 3C296 measure 150 kpc or 480,000 light years edge-to-edge diameter (for a Hubble constant of 100 km/s/Mpc).
FR I (plumed) radio galaxy at z=0.0237. VLA 1.45 GHz image at 4.9 arcsec resolution. [show more]
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Radio Galaxy 3C83.1B
Creator:Legacy Astronomical Images
Series:Active Galactic Nuclei Series
Unit:Radio Galaxies Unit
Type:Legacy Astronomical Image
Description:This is a false-color image of the wide-angle radio galaxy 3C83.1B, associated with the elliptical galaxy NGC1265 in the Perseus Cluster of galaxies. Blue colors show the distribution of stars, made from an image from the Digitized Second Palomar Sky Survey, and red colors show the radio radiation as imaged by the VLA, measured at a wavelength of 20cm. The galaxy is moving through the intergalactic medium of the Perseus Cluster at a velocity of about 2000 km/s. It is thought that twin beams of plasma ejected from the galactic nucleus are bent by the ram pressure exerted by the external gas, producing the 'U' shape. The radio tail extends much further than is visible in this image.
Radio data: VLA C+D array L-band (20cm) observation, 12" resolution. [show more]
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Radio/Optical Overlay Radio Galaxy 3C433
Creator:Legacy Astronomical Images
Series:Active Galactic Nuclei Series
Unit:Quasars Unit
Type:Legacy Astronomical Image
Description:False-color image of the unusual double-lobed radio galaxy 3C433. Blue colors show the distribution of stars, made from an HST WFPC2 image (from Sigrid de Koff et al. 1996, ApJSS, 107, 621), and red colors show the radio radiation as imaged by the VLA. The host galaxy is a member of a close pair in a small group. There are bright hot spots and other structure in asymmetric lobes, and a well collimated, one-sided radio jet. This radio emission is from relativistic streams of high energy particles generated by the quasar. Astronomers believe that the jets are fueled by material accreting onto a super-massive black hole at the center of the galaxy hosting the quasar. The high energy particles are shot into extragalactic space at speeds approaching the speed of light, where they eventually balloon into massive radio lobes.
Radio galaxy is at a redshift of z=0.1016 (450/h Mpc, H = 100h km/s/Mpc). The radio image is from a VLA 8.5 GHz (3.6cm) observation at 0.75 arcsec resolution. [show more]
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Radio/Optical Overlay Radio Galaxy 3C66B
Creator:Legacy Astronomical Images
Series:Active Galactic Nuclei Series
Unit:Quasars Unit
Type:Legacy Astronomical Image
Description:This image shows the optical and radio morphology of the double-lobed radio galaxy 3C66B. In this radio/optical overlay, blue colors show the distribution of stars, made from an image from the Digitized Sky Survey, and red colors show the radio radiation as imaged by the VLA, measured at a wavelength of 20cm. This radio emission is from relativistic streams of high energy particles generated by the quasar. Astronomers believe that the jets are fueled by material accreting onto a super-massive black hole at the center of the galaxy hosting the quasar. The high energy particles are shot into extragalactic space at speeds approaching the speed of light, where they eventually balloon into massive radio lobes.
FR I (plumed) radio galaxy at z=0.0215 (65/h Mpc, H = 100h km/s/Mpc). Jets and plumes extend 140/h kpc from galaxy. VLA 1.45 GHz (20cm) image at 12.5 arcsec resolution. [show more]