Zobrazeno 1 - 10
of 74 755
pro vyhledávání: '"A. Hirai"'
Autor:
Dohi, Akira, Nishimura, Nobuya, Hirai, Ryosuke, Takeda, Tomoshi, Iwatari, Wataru, Tamagawa, Toru, Aoyama, Amira, Enoto, Teruaki, Iwata, Satoko, Kato, Yo, Kitaguchi, Takao, Mhira, Tatehiro, Ota, Naoyuki, Takahashi, Takuya, Watanabe, Sota, Yamasaki, Kaede
In February and March 2024, several Type I X-ray bursts from the accreting neutron star SRGA J144459.2$-$60420 were detected by multiple X-ray satellites, with the first reports coming from INTEGRAL and NinjaSat. These observations reveal that after
Externí odkaz:
http://arxiv.org/abs/2411.10993
Autor:
Takeda, Tomoshi, Tamagawa, Toru, Enoto, Teruaki, Kitaguchi, Takao, Kato, Yo, Mihara, Tatehiro, Iwakiri, Wataru, Numazawa, Masaki, Ota, Naoyuki, Watanabe, Sota, Jujo, Arata, Aoyama, Amira, Iwata, Satoko, Takahashi, Takuya, Yamasaki, Kaede, Hu, Chin-Ping, Takahashi, Hiromitsu, Dohi, Akira, Nishimura, Nobuya, Hirai, Ryosuke, Yoshida, Yuto, Sato, Hiroki, Hayashi, Syoki, Zhou, Yuanhui, Uchiyama, Keisuke, Odaka, Hirokazu, Tamba, Tsubasa, Taniguchi, Kentaro
The CubeSat X-ray observatory NinjaSat was launched on 2023 November 11 and has provided opportunities for agile and flexible monitoring of bright X-ray sources. On 2024 February 23, the NinjaSat team started long-term observation of the new X-ray so
Externí odkaz:
http://arxiv.org/abs/2411.10992
Autor:
Hirashima, Keiya, Moriwaki, Kana, Fujii, Michiko S., Hirai, Yutaka, Saitoh, Takayuki R., Makino, Junnichiro, Steinwandel, Ulrich P., Ho, Shirley
We introduce new high-resolution galaxy simulations accelerated by a surrogate model that reduces the computation cost by approximately 75 percent. Massive stars with a Zero Age Main Sequence mass of about 8 solar masses and above explode as core-col
Externí odkaz:
http://arxiv.org/abs/2410.23346
Autor:
Orlando, S., Greco, E., Hirai, R., Matsuoka, T., Miceli, M., Nagataki, S., Ono, M., Chen, K. -J., Milisavljevic, D., Patnaude, D., Bocchino, F., Elias-Rosa, N.
We investigate SN 2014C using three-dimensional hydrodynamic modeling, focusing on its early interaction with dense circumstellar medium (CSM). Our objective is to uncover the pre-supernova (SN) CSM structure and constrain the progenitor star's mass-
Externí odkaz:
http://arxiv.org/abs/2410.17699
Autor:
Hirai, Yutaka, Beers, Timothy C., Lee, Young Sun, Wanajo, Shinya, Roederer, Ian U., Tanaka, Masaomi, Chiba, Masashi, Saitoh, Takayuki R., Placco, Vinicius M., Hansen, Terese T., Ezzeddine, Rana, Frebel, Anna, Holmbeck, Erika M., Sakari, Charli M.
We study the formation of stars with varying amounts of heavy elements synthesized by the rapid neutron-capture process ($r$-process) based on our detailed cosmological zoom-in simulation of a Milky Way-like galaxy with an $N$-body/smoothed particle
Externí odkaz:
http://arxiv.org/abs/2410.11943
Autor:
Iwahara, Naoya, Soh, Jian-Rui, Hirai, Daigorou, Živković, Ivica, Wei, Yuan, Zhang, Wenliang, Galdino, Carlos, Yu, Tianlun, Ishii, Kenji, Pisani, Federico, Malanyuk, Oleg, Schmitt, Thorsten, Rønnow, Henrik M
Quantum entanglement between the spin, orbital and lattice degrees of freedom in condensed matter systems can emerge due to an interplay between spin-orbit and vibronic interactions. Heavy transition metal ions decorated on a face-centered cubic latt
Externí odkaz:
http://arxiv.org/abs/2409.08095
Autor:
Zivkovic, Ivica, Soh, Jian-Rui, Malanyuk, Oleg, Yadav, Ravi, Pisani, Federico, Tehrani, Aria M., Tolj, Davor, Pasztorova, Jana, Hirai, Daigorou, Wei, Yuan, Zhang, Wenliang, Galdino, Carlos, Yu, Tianlun, Ishii, Kenji, Demuer, Albin, Yazyev, Oleg V., Schmitt, Thorsten, Ronnow, Henrik M.
Publikováno v:
Nature Communications 15, 8587 (2024)
Exotic quantum phases, arising from a complex interplay of charge, spin, lattice and orbital degrees of freedom, are of immense interest to a wide research community. A well-known example of such an entangled behavior is the Jahn-Teller effect, where
Externí odkaz:
http://arxiv.org/abs/2409.01436
We construct a semi-analytical model that describes the convective core mass evolution of massive stars experiencing mass loss during the main-sequence stage. We first conduct a suite of 1D stellar evolution calculations to build insight into how con
Externí odkaz:
http://arxiv.org/abs/2409.00460
In previous papers I and II under the same title, we proposed a practical method called Efficient stairway up to the Sky, and apply it to some typical finite groups $G$, with Schur multiplier $M(G)$ containing prime number 3, to construct explicitly
Externí odkaz:
http://arxiv.org/abs/2408.14727
In the previous paper, we proposed a practical method of constructing explicitly representation groups $R(G)$ for finite groups $G$, and apply it to certain typical finite groups $G$ with Schur multiplier $M(G)$ containing prime number 3. In this pap
Externí odkaz:
http://arxiv.org/abs/2408.03486