97 citations · 367 across the 14 of their papers we have counts for
6 papers · 1 filter
On the Subclasses in Swift Long Gamma-Ray Bursts: A Clue to Different Central Engines
Ryo Tsutsui, Toshikazu Shigeyama
Analyzing light curves of a complete sample of bright Swift long gamma-ray bursts (LGRBs) of which the peak photon fluxes constructed with the bin width of 1 second in the Swift 15…
Universal scaling law in long gamma-ray bursts
Ryo Tsutsui, Toshikazu Shigeyama
Overwhelming diversity of long gamma-ray bursts (LGRBs), discovered after the launch of {\it Swift} satellite, is a major obstacle to LGRB studies. Recently, it is shown that the p…
Possible existence of Ep-Lp and Ep-Eiso correlations for Short Gamma-Ray Bursts with a factor 5 to 100 dimmer than those for Long Gamma-Ray Bursts
Ryo Tsutsui, Daisuke Yonetoku Takashi Nakamura, Keitaro Takahashi +1
We analyzed correlations among the rest frame spectral peak energy , the observed frame 64ms peak isotropic luminosity and the isotropic energy …
Possible Origins of Dispersion of the Peak Energy--Brightness Correlations of Gamma-Ray Bursts
Daisuke Yonetoku, Toshio Murakami, Ryo Tsutsui +3
We collect and reanalyze about 200 GRB data of prompt-emission with known redshift observed until the end of 2009, and select 101 GRBs which were well observed to have good spectra…
Intrisic Dispersion of Correlations among Ep, Lp, and Eiso of Gamma Ray Bursts depends on the quality of Data Set
Ryo Tsutsui, Takashi Nakamura, Daisuke Yonetoku +2
We reconsider correlations among the spectral peak energy (), 1-second peak luminosity () and isotropic energy (\Eiso), using the database constructed by \citet{yonetoku1…
Testing two-component jet models of GRBs with orphan afterglows
Kohei Inayoshi, Ryo Tsutsui
In the \swift era, two-component jet models were introduced to explain the complex temporal profiles and the diversity of early afterglows. In this paper, we concentrate on the two…