Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Akiko Kawachi"'
Autor:
Yuki Moritani, Akiko Kawachi
Publikováno v:
Universe, Vol 7, Iss 9, p 320 (2021)
Optical and near-infrared observations are compiled for the three gamma-ray binaries hosting Be stars: PSR B1259−63, LSI+61 303, and HESS J0632+057. The emissions from the Be disk are considered to vary according to the changes in its structure, so
Externí odkaz:
https://doaj.org/article/866c36b473404e96867975c0a43598a4
Autor:
Katsuki HIRAI, Yuki KAWAMOTO, Shuusuke KAWAMATA, Shotaro NARA, Shun TAKAHASHI, Akiko KAWACHI, Shun OKAZAKI, Hideyuki FUKE
Publikováno v:
The Proceedings of The Computational Mechanics Conference. :23-06
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbbf23ae940af156c8386730ccb1b742
https://doi.org/10.1299/jsmecmd.2022.35.23-06
https://doi.org/10.1299/jsmecmd.2022.35.23-06
We have performed the near-infrared photometric monitoring observations of two TeV gamma-ray binaries with O-stars (LS 5039 and 1FGL J1018.6-5856), using IRSF/SIRIUS at SAAO, in order to study the stellar parameters and their perturbations caused by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::361ff81aa1bbacc82e25d4cb2a9a523e
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 1049:168102
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a59ff2675e020672ba1368386684d3bc
https://doi.org/10.1016/j.nima.2023.168102
https://doi.org/10.1016/j.nima.2023.168102
The binary of the pulsar PSRB1259$-$63 and the Be star LS 2883 has been observed at the 2010 and 2014 periastron passages in the near-infrared (NIR) bands using the IRSF/SIRIUS and SIRPOL. The light curves in the J-,H-, and Ks-bands are almost identi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c915ed8958f3fb2e5ea123eac6d1a55
http://arxiv.org/abs/2103.04895
http://arxiv.org/abs/2103.04895
Publikováno v:
Publications of the Astronomical Society of Japan. 72
We report Atacama Large Millimeter/submillimeter Array (ALMA) observations of the gamma-ray binary system containing the pulsar PSR B1259-63 orbiting around a massive star LS 2883 in an inactive period between the 2017 and 2021 periastron passages. W
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da0038a937aadfc87e8463ec30278755
https://doi.org/10.1093/pasj/psaa067
https://doi.org/10.1093/pasj/psaa067
Publikováno v:
2019 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC).
A low-power, large-scale, and efficient cooling system has been developed to cool lithium-drifted silicon [Si(Li)] detectors distributed in a balloon payload of the General Anti-Particle Spectrometer (GAPS). The system is composed of a multi-loop hea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f6ad8db922150e7501e966694601762
https://doi.org/10.1109/nss/mic42101.2019.9059635
https://doi.org/10.1109/nss/mic42101.2019.9059635
We report Atacama Large Millimeter/submillimeter Array (ALMA) observations of the binary system containing the pulsar PSR B1259-63 orbiting around a Be star LS 2883 after the 2017 periastron passage. We detected radio continuum emission from the bina
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99a90fdaf6b50b04fb2856e861207dd7
Autor:
T. Kawano, Yuki Moritani, Hiromitsu Takahashi, Alex C. Carciofi, Jumpei Takata, Akiko Kawachi, Sho Chimasu
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
High-dispersion spectroscopic monitoring of HESS J0632+057 has been carried out over four orbital cycles in order to search for orbital modulation, covering the entire orbital phase. We have measured radial velocity of H$\alpha$ emission line with th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ea7c6f2ea79283b5a2569e0cdfa8e4e
https://doi.org/10.1093/pasj/psy053
https://doi.org/10.1093/pasj/psy053
Autor:
Florian Gahbauer, Ralph Bird, N. Saffold, William W. Craig, Charles J. Hailey, A. Yoshida, Gianluigi Zampa, G. Osteria, R. A. Ong, Mirko Boezio, F. Rogers, Yuki Shimizu, Shun Okazaki, S. Quinn, R. Carr, Steven E. Boggs, Hideyuki Fuke, Akiko Kawachi, C. Gerrity, Lorenzo Fabris, Jeffrey Zweerink, Masayoshi Kozai, K. Perez, Tetsuya Yoshida, J.L. Ryan, Philip von Doetinchem, Kazuoki Munakata, Tsuguo Aramaki, A. Lowell, Isaac Mognet, Chihiro Kato, Valerio Re, A. Stoessl
Experiments aiming to directly detect dark matter (DM) particles have yet to make robust detections, thus underscoring the need for complementary approaches such as searches for new particles at colliders, and indirect DM searches in cosmic-ray spect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bdaac180f25fcfef49628026ce6c2af9