MAMMOTH-1 is a large ultraluminous
lyman Alpha
Lyman-alpha, typically denoted by Ly-α or Lyα, 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 gro ...
emitting radio-quiet
nebula
A nebula (; or nebulas) is a distinct luminescent part of interstellar medium, which can consist of ionized, neutral, or molecular hydrogen and also cosmic dust. Nebulae are often star-forming regions, such as in the Pillars of Creation in ...
located near the center of a massive galaxy overdensity named
BOSS1441 at a redshift distance of z= 2.32. The nebula has a size of 450 kiloparsecs making it one of the largest lyman-alpha nebula known comparable or even larger than the
Slug nebula.
As of to date, this nebula has the highest lyman alpha luminosity of any nebula with a luminosity of 5.2x10^44 ergs.
Reference
Nebulae
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