X-Ray Nondetection of the Lyα Emitters at <i>z</i> ~ 4.5
X-Ray Nondetection of the Lyα Emitters at <i>z</i> ~ 4.5
The Lyα emitters found at z ∼ 4.5 by the Large Area Lyman Alpha (LALA) survey have high equivalent widths in the Lyα line, which can be produced by either narrow-lined active galactic nuclei (AGNs) or by stellar populations with a very high proportion of young, massive stars.To investigate the …