Search results
Results From The WOW.Com Content Network
Animation of a Lyman-alpha blob. The giant Lyman-alpha blob LAB-1 (left) and an artist's impression of what it might look like if viewed from relatively close (right). In astronomy, a Lyman-alpha blob (LAB) is a huge concentration of a gas emitting the Lyman-alpha emission line. LABs are some of the largest known individual objects in the Universe.
Lyman-alpha blob 1 (LAB-1) is a giant cosmic cloud of gas located in the constellation of Aquarius, approximately 11.5 billion light-years from Earth with a redshift (z) of 3.09. It was discovered unexpectedly in 2000 by Charles Steidel and colleagues, [ 2 ] who were surveying for high- redshift galaxies using the 200 inch (5.08 m) Hale ...
Lyman-alpha, typically denoted by Ly-α, is a spectral line of hydrogen (or, more generally, of any one-electron atom) in the Lyman series. It is emitted when the atomic electron transitions from an n = 2 orbital to the ground state ( n = 1), where n is the principal quantum number .
Lyman-alpha blob 1 -- This massive primordial cloud of hydrogen is more than 300,000 light-years across. That's three times as big as our Milky Way galaxy. Scientists think the blob may be ...
For premium support please call: 800-290-4726 more ways to reach us
TON 618 (abbreviation of Tonantzintla 618) is a hyperluminous, broad-absorption-line, radio-loud quasar, and Lyman-alpha blob [2] located near the border of the constellations Canes Venatici and Coma Berenices, with the projected comoving distance of approximately 18.2 billion light-years from Earth.
Himiko is a large gas cloud found at redshift of z=6.6 that predates similar Lyman-alpha blobs.At the time of its discovery in 2009, researchers said it "may represent the most massive object ever discovered in the early universe". [1]
Some of these Lyman-alpha blobs have line luminosities up to ~ 10 44 erg s −1 with their spatial extents exceeding 100 proper kpc. [4] [5] But in this case, the Lyman-alpha blob structure in UM 287 is 1.5 million light-years across making it too big to be contained within the quasar's host galaxy, [6] which is found to be a massive early-type ...