Sentences with phrase «blazars with»
«Now, based on independent confirmation by two groups of astronomers, we see these three blazars with apparent speeds greater than 25 times that of light,» Piner added.
https://public.nrao.edu/ Not exact matches
At the heart of a blazar lies a supersized black hole with millions of times the sun's mass surrounded by a disk of hot gas and dust.
Related sites Abstract of paper, with link to full text Chandra X-ray Observatory FUSE satellite, used in similar studies of lower - temperature gas Observations of Markarian 421 blazar Shull's home page
J1415 +1320 is what's known as a blazar, a bright galaxy with a gluttonous supermassive black hole at its center (SN: 3/4/17, p. 13).
This behaviour and further findings from observations can be best explained with an interesting assumption: Although the brightness variations in the gamma ray region also originate from the flare ups in the blazar, they are amplified to different degrees by the gravitational lens effect of individual stars in the foreground galaxy.
Blazars periodically flare when the supermassive black holes in some active galaxies» cores fill with dust and gas, releasing massive amounts of energy.
Piner and his colleagues observed the blazars again in 2002 and 2003 with much longer observations, and were able to confirm the high - speed motions in the faint blazar jets.
The researchers hope to test this hypothesis with larger blazar samples.
The discovery of five blazars from the universe's youth means there must be hundreds more similar objects, said astronomer Roopesh Ojha, with NASA's Goddard Space Flight Center in Greenbelt, Md..