113 citations · 460 across the 13 of their papers we have counts for
10 papers · 1 filter
Singly-Peaked P-Cygni type Ly from starburst galaxies
Sang-Hyeon Ahn
We present results of Monte Carlo calculations for the Lya line transfer in an expanding dusty supershell, where Lya source is a well-localized star cluster in a starburst galaxy.T…
Meteors And Showers A Millennium Ago
Sang-Hyeon Ahn
Meteors can be classified into either sporadic meteors or showery meteors. We compile the meteor records in the astronomical archives in the Chronicle of the Koryo dynasty (918-139…
Lya Polarisation in Thick H I Media
Hee-Won Lee, Sang-Hyeon Ahn
We have investigated the linear polarisation of Lya transferred in a static, dustless, and thick plane-parallel slab that is uniformly filled with neutral hydrogen. Because the sca…
P-Cygni Type Lya from Starburst Galaxies
Sang-Hyeon Ahn, Hee-Won Lee, Hyung Mok Lee
P-Cygni type Lya profiles exhibited in nearly half of starburst galaxies, both nearby and high-z, are believed to be formed by an expanding supershell surrounding a star-forming re…
GRB Explosion in a Galactic Supershell : GRB 971214
Sang-Hyeon Ahn
Among a number of gamma-ray bursts whose host galaxies are known, GRB971214 stands out for its high redshift(z=3.25) and the Lya emission line having a P-Cygni type profile. which…
Profiles of the Resonance Doublets Formed in Bipolar Winds in Symbiotic Stars
Jerry Jaiyul Yoo, Hee-Won Lee, Sang-Hyeon Ahn
We compute the profiles of resonance doublet lines formed in bipolar winds with velocity greater than the doublet separation in symbiotic stars. Particular attention has been paid…