Zobrazeno 1 - 10
of 1 477
pro vyhledávání: '"Yamada Shinya"'
Autor:
Kimura, Mariko, Negoro, Hitoshi, Yamada, Shinya, Iwakiri, Wataru, Sako, Shigeyuki, Ohsawa, Ryou
We performed shot analyses of X-ray and optical sub-second flares observed during the low/hard state of the 2018 outburst in MAXI J1820$+$070. Optical shots were less spread than X-ray shots. The amplitude of X-ray shots was the highest at the onset
Externí odkaz:
http://arxiv.org/abs/2411.03602
Publikováno v:
The Astrophysical Journal, Volume 974, Number 2, 245 (2024)
Decadal changes in a nearby supernova remnant (SNR) were analyzed using a multiepoch maximum likelihood estimation (MLE) approach. To achieve greater accuracy in capturing the dynamics of SNRs, kinematic features and point-spread function effects wer
Externí odkaz:
http://arxiv.org/abs/2410.15072
Autor:
Ninoyu, Kaito, Uchida, Yuusuke, Yamada, Shinya, Kohmura, Takayoshi, Igarashi, Taichi, Hayakawa, Ryota, Kawamura, Tenyo
We systematically investigate the variability of polarized X-rays on a timescale of a few seconds in the low/hard state of the black hole binary Cygnus X-1. The correlation between polarization degrees and angles with X-Ray intensity was analyzed usi
Externí odkaz:
http://arxiv.org/abs/2408.00980
Autor:
Sakai, Yusuke, Yamada, Shinya, Sato, Toshiki, Hayakawa, Ryota, Higurashi, Ryota, Kominato, Nao
Richardson-Lucy (RL) deconvolution is one of the classical methods widely used in X-ray astronomy and other areas. Amid recent progress in image processing, RL deconvolution still leaves much room for improvement under a realistic situations. One dir
Externí odkaz:
http://arxiv.org/abs/2306.13355
Autor:
Kimura, Mariko, Kashiyama, Kazumi, Shigeyama, Toshikazu, Tampo, Yusuke, Yamada, Shinya, Enoto, Teruaki
We present timing and spectral analysis results of the {\it NICER} and {\it NuSTAR} observations of the dwarf nova MASTER OT J030227.28$+$191754.5 during the 2021--2022 outburst. The soft X-ray component was found to be dominated by blackbody radiati
Externí odkaz:
http://arxiv.org/abs/2305.15994
Autor:
Yan, Daikang, Weber, Joel C., Guruswamy, Tejas, Morgan, Kelsey M., O'Neil, Galen C., Wessels, Abigail L., Bennett, Douglas A., Pappas, Christine G., Mates, John A., Gard, Johnathon D., Becker, Daniel T., Fowler, Joseph W., Swetz, Daniel S., Schmidt, Daniel R., Ullom, Joel N., Okumura, Takuma, Isobe, Tadaaki, Azuma, Toshiyuki, Okada, Shinji, Yamada, Shinya, Hashimoto, Tadashi, Quaranta, Orlando, Miceli, Antonino, Gades, Lisa M., Patel, Umeshkumar M., Paul, Nancy, Bian, Guojie, Indelicato, Paul
Superconducting transition-edge sensor (TES) microcalorimeters have great utility in x-ray applications owing to their high energy resolution, good collecting efficiency and the feasibility of being multiplexed into large arrays. In this work, we dev
Externí odkaz:
http://arxiv.org/abs/2207.10845
The central strong activities in core-collapse supernovae expect to produce the overturning of the Fe- and Si/O-rich ejecta during the supernova explosion based on multi-dimensional simulations. X-ray observations of the supernova remnant Cassiopeia
Externí odkaz:
http://arxiv.org/abs/2205.04748
Discovery of Stable Titanium at the Northeastern Jet of Cassiopeia A: Need for a Weak Jet Mechanism?
Autor:
Ikeda, Takuma, Uchiyama, Yasunobu, Sato, Toshiki, Higurashi, Ryota, Tsuchioka, Tomoya, Yamada, Shinya
The origin of the jet-like structures observed in Cassiopeia A is still unclear, although it seems to be related to its explosion mechanism. X-ray observations of the characteristic structures could provide us useful information on the explosive nucl
Externí odkaz:
http://arxiv.org/abs/2201.03753
Autor:
Yamada, Shinya, Sakai, Kazuya, Kubo, Masayuki, Okumura, Hirokazu, Asakura, Hidesaku, Miyamoto, Toshihiro, Matsumoto, Masanori
Publikováno v:
In Research and Practice in Thrombosis and Haemostasis July 2024 8(5)
Autor:
Yamada, Michihiro, Suzuki, Shota, Osaka, Ai I., Sumi, Kazuaki, Inoue, Takahiro, Hattori, Azusa N., Yamada, Shinya, Sawano, Kentarou, Dhamrin, Marwan, Hamaya, Kohei
Publikováno v:
In Materials Science in Semiconductor Processing May 2024 174