Zobrazeno 1 - 10
of 258
pro vyhledávání: '"Lin, Weikang"'
Autor:
Lin, Weikang
Several galaxy-scale observations challenge the predictions of the cold dark matter paradigm based on cosmological simulations. The cusp-core problem is one of the most outstanding. However, current simulations are unable to consider quantum statisti
Externí odkaz:
http://arxiv.org/abs/2407.01690
Autor:
Zhang, Zhijian, Lin, Weikang
The suppression of small-scale matter power spectrum is a distinct feature of Warm Dark Matter (WDM), which permits a constraint on the WDM mass from galaxy surveys. In the thermal relic WDM scenario, quantum statistical effects are not manifest. In
Externí odkaz:
http://arxiv.org/abs/2406.02159
Autor:
Chen, Xinlei, Kumar, Brajesh, Er, Xinzhong, Guo, Helong, Yang, Yuan-Pei, Lin, Weikang, Fang, Yuan, Du, Guowang, Liu, Chenxu, Zhao, Jiewei, Zhang, Tianyu, Bao, Yuxi, Zou, Xingzhu, Pan, Yu, Wang, Yu, Zhu, Xufeng, Chatterjee, Kaushik, Liu, Xiangkun, Liu, Dezi, Lagioia, Edoardo P., Rangwal, Geeta, Zhong, Shiyan, Zhang, Jinghua, Lian, Jianhui, Cai, Yongzhi, Zhang, Yangwei, Liu, Xiaowei
We present early-phase good cadence simultaneous multi-band ($ugi$, $vrz$--bands) imaging of nearby supernova SN 2024ggi, which exploded in the nearby galaxy, NGC~3621. A quick follow-up was conducted within less than a day after the explosion and co
Externí odkaz:
http://arxiv.org/abs/2405.07964
Autor:
Cui, Yuzhu, Hada, Kazuhiro, Kawashima, Tomohisa, Kino, Motoki, Lin, Weikang, Mizuno, Yosuke, Ro, Hyunwook, Honma, Mareki, Yi, Kunwoo, Yu, Jintao, Park, Jongho, Jiang, Wu, Shen, Zhiqiang, Kravchenko, Evgeniya, Algaba, Juan-Carlos, Cheng, Xiaopeng, Cho, Ilje, Giovannini, Gabriele, Giroletti, Marcello, Jung, Taehyun, Lu, Ru-Sen, Niinuma, Kotaro, Oh, Junghwan, Ohsuga, Ken, Sawada-Satoh, Satoko, Sohn, Bong Won, Takahashi, Hiroyuki R., Takamura, Mieko, Tazaki, Fumie, Trippe, Sascha, Wajima, Kiyoaki, Akiyama, Kazunori, An, Tao, Asada, Keiichi, Buttaccio, Salvatore, Byun, Do-Young, Cui, Lang, Hagiwara, Yoshiaki, Hirota, Tomoya, Hodgson, Jeffrey, Kawaguchi, Noriyuki, Kim, Jae-Young, Lee, Sang-Sung, Lee, Jee Won, Lee, Jeong Ae, Maccaferri, Giuseppe, Melis, Andrea, Melnikov, Alexey, Migoni, Carlo, Oh, Se-Jin, Sugiyama, Koichiro, Wang, Xuezheng, Zhang, Yingkang, Chen, Zhong, Hwang, Ju-Yeon, Jung, Dong-Kyu, Kim, Hyo-Ryoung, Kim, Jeong-Sook, Kobayashi, Hideyuki, Li, Bin, Li, Guanghui, Li, Xiaofei, Liu, Zhiyong, Liu, Qinghui, Liu, Xiang, Oh, Chung-Sik, Oyama, Tomoaki, Roh, Duk-Gyoo, Wang, Jinqing, Wang, Na, Wang, Shiqiang, Xia, Bo, Yan, Hao, Yeom, Jae-Hwan, Yonekura, Yoshinori, Yuan, Jianping, Zhang, Hua, Zhao, Rongbing, Zhong, Weiye
Publikováno v:
2023, Nature, 621, 711-715
The nearby radio galaxy M87 offers a unique opportunity to explore the connections between the central supermassive black hole and relativistic jets. Previous studies of the inner region of M87 revealed a wide opening angle for the jet originating ne
Externí odkaz:
http://arxiv.org/abs/2310.09015
The f\'eeton is the gauge boson of the $U(1)_{B-L}$ gauge theory. If the gauge coupling constant is extremely small, it becomes a candidate for dark matter. We show that its decay to a pair of electron and positron explains the observed Galactic 511-
Externí odkaz:
http://arxiv.org/abs/2310.05420
Cosmology and astrophysics provide various ways to study the properties of dark matter even if they have negligible non-gravitational interactions with the Standard Model particles and remain hidden. We study a type of hidden dark matter model in whi
Externí odkaz:
http://arxiv.org/abs/2305.08943
Autor:
Lin, Weikang, Yanagida, Tsutomu T.
Recently, arXiv:2210.05659 shows that a photon-axion like particle (ALP) oscillation can boost the survival rate of the high energy photons associated with the observed GRB221009A event. Here, we show that the proposed ALP is consistent with the elec
Externí odkaz:
http://arxiv.org/abs/2210.08841
One of the simplest ways to account for the observed W-boson mass shift is to introduce the $SU(2)_L$ triplet Higgs boson with zero hypercharge, whose vacuum expectation value is about 3 GeV. If the triplet is heavy enough at $\mathcal{O}(1)$ TeV, it
Externí odkaz:
http://arxiv.org/abs/2209.12281
If dark matter resides in a hidden sector minimally coupled to the Standard Model, another particle within the hidden sector might dominate the energy density of the early universe temporarily, causing an early matter-dominated era (EMDE). During an
Externí odkaz:
http://arxiv.org/abs/2209.02735
Autor:
Lin, Weikang, Yanagida, Tsutomu T.
We revisit the constraint from the recently reported cosmic birefringence on axion-like particles with a general decay constant. A particular attention is paid to the naturalness of the model parameter space, which has been overlooked in the literatu
Externí odkaz:
http://arxiv.org/abs/2208.06843