a radio image of messier 87 (m87), a giant elliptical galaxy in the virgo cluster by the very large...
TRANSCRIPT
![Page 1: A radio image of Messier 87 (M87), a giant elliptical galaxy in the Virgo Cluster by the Very Large Array (VLA), and an image of the center section by](https://reader036.vdocument.in/reader036/viewer/2022062620/551bbcce550346be588b47c1/html5/thumbnails/1.jpg)
![Page 2: A radio image of Messier 87 (M87), a giant elliptical galaxy in the Virgo Cluster by the Very Large Array (VLA), and an image of the center section by](https://reader036.vdocument.in/reader036/viewer/2022062620/551bbcce550346be588b47c1/html5/thumbnails/2.jpg)
A radio image of Messier 87
(M87), a giant elliptical galaxy in
the Virgo Cluster by the Very
Large Array (VLA), and an image
of the center section by a Very
Long Baseline Array (VLBA)
consisting of antennas in the US,
Germany, Italy, Finland, Sweden
and Spain. The jet of particles is
suspected to be powered by a
black hole in the center of the
galaxy.
![Page 3: A radio image of Messier 87 (M87), a giant elliptical galaxy in the Virgo Cluster by the Very Large Array (VLA), and an image of the center section by](https://reader036.vdocument.in/reader036/viewer/2022062620/551bbcce550346be588b47c1/html5/thumbnails/3.jpg)
An image of the Cosmic Microwave Background Radiation from the The COBE
(Cosmic Background Explorer) satellite
![Page 4: A radio image of Messier 87 (M87), a giant elliptical galaxy in the Virgo Cluster by the Very Large Array (VLA), and an image of the center section by](https://reader036.vdocument.in/reader036/viewer/2022062620/551bbcce550346be588b47c1/html5/thumbnails/4.jpg)
A Radar image of Hurricane Katrina. Radar stands for “Radio Detection and
Ranging”, though it in fact uses microwaves!
![Page 5: A radio image of Messier 87 (M87), a giant elliptical galaxy in the Virgo Cluster by the Very Large Array (VLA), and an image of the center section by](https://reader036.vdocument.in/reader036/viewer/2022062620/551bbcce550346be588b47c1/html5/thumbnails/5.jpg)
…we can image in Infrared…
…and produce false-colour images called ‘thermograms’…
![Page 6: A radio image of Messier 87 (M87), a giant elliptical galaxy in the Virgo Cluster by the Very Large Array (VLA), and an image of the center section by](https://reader036.vdocument.in/reader036/viewer/2022062620/551bbcce550346be588b47c1/html5/thumbnails/6.jpg)
…or we can image in ultraviolet…
…or in x-rays…
![Page 7: A radio image of Messier 87 (M87), a giant elliptical galaxy in the Virgo Cluster by the Very Large Array (VLA), and an image of the center section by](https://reader036.vdocument.in/reader036/viewer/2022062620/551bbcce550346be588b47c1/html5/thumbnails/7.jpg)
Three portraits with different spectral responses. UV on the left (335-365nm)
Visible in the middle (440-640nm) and Infrared on the right (720-850nm)
![Page 8: A radio image of Messier 87 (M87), a giant elliptical galaxy in the Virgo Cluster by the Very Large Array (VLA), and an image of the center section by](https://reader036.vdocument.in/reader036/viewer/2022062620/551bbcce550346be588b47c1/html5/thumbnails/8.jpg)
An X-ray image of a man
involved in an accident…
![Page 9: A radio image of Messier 87 (M87), a giant elliptical galaxy in the Virgo Cluster by the Very Large Array (VLA), and an image of the center section by](https://reader036.vdocument.in/reader036/viewer/2022062620/551bbcce550346be588b47c1/html5/thumbnails/9.jpg)
This is an X-ray image of a broken AC joint in the the shoulder…
![Page 10: A radio image of Messier 87 (M87), a giant elliptical galaxy in the Virgo Cluster by the Very Large Array (VLA), and an image of the center section by](https://reader036.vdocument.in/reader036/viewer/2022062620/551bbcce550346be588b47c1/html5/thumbnails/10.jpg)
Gamma ray imaging is used here to reveal regions of nuclear radiation at the Fukushima Nuclear power station.
![Page 11: A radio image of Messier 87 (M87), a giant elliptical galaxy in the Virgo Cluster by the Very Large Array (VLA), and an image of the center section by](https://reader036.vdocument.in/reader036/viewer/2022062620/551bbcce550346be588b47c1/html5/thumbnails/11.jpg)
![Page 12: A radio image of Messier 87 (M87), a giant elliptical galaxy in the Virgo Cluster by the Very Large Array (VLA), and an image of the center section by](https://reader036.vdocument.in/reader036/viewer/2022062620/551bbcce550346be588b47c1/html5/thumbnails/12.jpg)
![Page 13: A radio image of Messier 87 (M87), a giant elliptical galaxy in the Virgo Cluster by the Very Large Array (VLA), and an image of the center section by](https://reader036.vdocument.in/reader036/viewer/2022062620/551bbcce550346be588b47c1/html5/thumbnails/13.jpg)
…in fact we can create false-colour images of any data we like…
…like this image showing ozone density…
![Page 14: A radio image of Messier 87 (M87), a giant elliptical galaxy in the Virgo Cluster by the Very Large Array (VLA), and an image of the center section by](https://reader036.vdocument.in/reader036/viewer/2022062620/551bbcce550346be588b47c1/html5/thumbnails/14.jpg)
This image was obtained using a Scanning Tunnelling Microscope
![Page 15: A radio image of Messier 87 (M87), a giant elliptical galaxy in the Virgo Cluster by the Very Large Array (VLA), and an image of the center section by](https://reader036.vdocument.in/reader036/viewer/2022062620/551bbcce550346be588b47c1/html5/thumbnails/15.jpg)
…an STM measures currents resulting from the tunnelling of electrons…
…and we can use this data to produce images of a surface on an atomic/molecular scale…!
![Page 16: A radio image of Messier 87 (M87), a giant elliptical galaxy in the Virgo Cluster by the Very Large Array (VLA), and an image of the center section by](https://reader036.vdocument.in/reader036/viewer/2022062620/551bbcce550346be588b47c1/html5/thumbnails/16.jpg)
…even optical images are very often collected and stored digitally now…
…using, for example, a ccd (charge coupled device).
…the ‘photograph’ produced is actually reconstructed from the numerical values of the voltages stored in each picture element..!
![Page 17: A radio image of Messier 87 (M87), a giant elliptical galaxy in the Virgo Cluster by the Very Large Array (VLA), and an image of the center section by](https://reader036.vdocument.in/reader036/viewer/2022062620/551bbcce550346be588b47c1/html5/thumbnails/17.jpg)
…we can even use sound waves to collect data…
…and create an image of something we could not otherwise see…
![Page 18: A radio image of Messier 87 (M87), a giant elliptical galaxy in the Virgo Cluster by the Very Large Array (VLA), and an image of the center section by](https://reader036.vdocument.in/reader036/viewer/2022062620/551bbcce550346be588b47c1/html5/thumbnails/18.jpg)
…we can even use sound waves to collect data…
…and create an image of something we could not otherwise see…