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Luminous supernova-like UV/optical/infrared transients associated with ultra-long gamma-ray bursts from metal-poor blue supergiants
Kazumi Kashiyama, Daisuke Nakauchi, Yudai Suwa +2
Metal-poor massive stars may typically end up their lives as blue supergiants (BSGs). Gamma-ray bursts (GRBs) from such progenitors could have ultra-long duration of relativistic j…
Effects of photon trapping on the Lyman-alpha properties of star-forming galaxies
Hidenobu Yajima, Yuexing Li
Recent observations show that a large number of Lyman-alpha emitters (LAEs) at high redshift z >= 3 have unusually high Lya equivalent widths (EW > 400 angstrom). However, the orig…
Cold accretion in early galaxy formation and its Lyman-alpha signatures
Hidenobu Yajima, Yuexing Li, Qirong Zhu +1
The Lyman-alpha (Lya) emission has played an important role in detecting high-redshift galaxies, including recently distant ones at redshift z > 7. It may also contain important in…
Extended Lyman-alpha emission from interacting galaxies at high redshifts
Hidenobu Yajima, Yuexing Li, Qirong Zhu
Recent observations have discovered a population of extended Lya sources, dubbed Lyman-alpha blobs (LABs), at high redshift z ~ 3 - 6.6. These LABs typically have a luminosity of L…
Escape of Lyman-alpha and continuum photons from star-forming galaxies
Hidenobu Yajima, Yuexing Li, Qirong Zhu +3
A large number of high-redshift galaxies have been discovered via their narrow-band Lya line or broad-band continuum colors in recent years. The nature of the escaping process of p…