TOTANI, Tomonori, D.Sc. (Univ. Tokyo), Astrophysics and Cosmology

Totani is working on several fields in Astrophysics and Cosmology, including
high redshift galaxies and galaxy formation/evolution, (very) high energy
radiation including cosmic rays and neutrinos from astronomical sources such
as gamma-ray bursts, supernovae, or galaxy clusters, and study of dark matter
using gravitational lensing. His study is mostly theoretical, but closely
related with latest and cutting-edge observations. Often he organizes an
observing team by himself.  His recent research topics include theoretical
study and interpretation of high-z galaxies found in deep fields observed by
latest telescopes such as Subaru, theoretical study of gamma-ray bursts,
their afterglows, and connection to supernovae, a search for dark matter
MACHOs in galaxy clusters by using gravitational microlensing observation by
Subaru telescope, and gamma-ray emission by strucutre formation shocks in
galaxy clusters.

Recent Papers (2001-2003)

Tomonori Totani 2003, ApJ in press, astro-ph/0303621
A Failed Gamma-Ray Burst with Dirty Energetic Jets Spirited Away? New
Implications for the GRB-SN Connection from Supernova 2002ap

Tomonori Totani 2003, ApJ, 586, 735
Cluster-Cluster Microlensing as a Probe of Intracluster Stars, MACHOs, and
Remnants of the First-Generation Stars

Tomonori Totani & Alin Panaitescu, 2002, ApJ, 576, 120
Orphan Afterglows of Collimated Gamma-Ray Bursts: Rate Predictions and
Prospects for Detection

Wataru Kawasaki & Tomonori Totani 2002, ApJ, 576, 679
Positional Coincidence between the High-Latitude Steady Unidentified
Gamma-Ray Sources and Possibly Merging Clusters of Galaxies

Tomonori Totani, Yuzuru Yoshii, Fumihide Iwamuro, Toshinori Maihara,
and Kentaro Motohara, 2001, The Astrophysical Journal, 550, L137
Diffuse Extragalactic Background Light versus Deep Galaxy Counts in the
Subaru Deep Field: Missing Light in the Universe?