Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Kann, David A."'
Autor:
Fu, Shao-Yu, Xu, Dong, Lei, Wei-Hua, Postigo, Antonio de Ugarte, Malesani, Daniele B., Kann, David Alexander, Jakobsson, Páll, Fynbo, Johan P. U., Maiorano, Elisabetta, Rossi, Andrea, Paris, Diego, Liu, Xing, Jiang, Shuai-Qing, Lu, Tian-Hua, An, Jie, Zhu, Zi-Pei, Gao, Xing, Wei, Jian-Yan
Ultra-long gamma-ray bursts (ULGRBs) are characterized by exceptionally long-duration central engine activities, with characteristic timescales exceeding 1000 seconds. We present ground-based optical afterglow observations of the ultra-long gamma-ray
Externí odkaz:
http://arxiv.org/abs/2410.15162
Autor:
Zhu, Zi-Pei, Lei, Wei-Hua, Malesani, Daniele B., Fu, Shao-Yu, Liu, Dong-Jie, Xu, Dong, D'Avanzo, Paolo, Fernández, José Feliciano Agüí, Fynbo, Johan P. U., Gao, Xing, Guelbenzu, Ana Nicuesa, Jiang, Shuai-Qing, Kann, David Alexander, Klose, Sylvio, Liu, Jin-Zhong, Liu, Xing, De Pasquale, Massimiliano, Postigo, Antonio de Ugarte, Stecklum, Bringfried, Th, Christina, Viuho, Joonas Kari Markku, Zhu, Yi-Nan, Li, Jing-Da, Gao, He, Lu, Tian-Hua, Xiao, Shuo, Zou, Yuan-Chuan, Xin, Li-Ping, Wei, Jian-Yan
High-redshift gamma-ray bursts (GRBs) provide a powerful tool to probe the early universe, but still for relatively few do we have good observations of the afterglow. We here report the optical and near-infrared observations of the afterglow of a rel
Externí odkaz:
http://arxiv.org/abs/2303.09982
Autor:
An, Zheng-Hua, Antier, S., Bi, Xing-Zi, Bu, Qing-Cui, Cai, Ce, Cao, Xue-Lei, Camisasca, Anna-Elisa, Chang, Zhi, Chen, Gang, Chen, Li, Chen, Tian-Xiang, Chen, Wen, Chen, Yi-Bao, Chen, Yong, Chen, Yu-Peng, Coughlin, Michael W., Cui, Wei-Wei, Dai, Zi-Gao, Hussenot-Desenonges, T., Du, Yan-Qi, Du, Yuan-Yuan, Du, Yun-Fei, Fan, Cheng-Cheng, Frontera, Filippo, Gao, He, Gao, Min, Ge, Ming-Yu, Gong, Ke, Gu, Yu-Dong, Guan, Ju, Guo, Dong-Ya, Guo, Zhi-Wei, Guidorzi, Cristiano, Han, Da-Wei, He, Jian-Jian, He, Jun-Wang, Hou, Dong-Jie, Huang, Yue, Huo, Jia, Ji, Zhen, Jia, Shu-Mei, Jiang, Wei-Chun, Kann, David Alexander, Klotz, A., Kong, Ling-Da, Lan, Lin, Li, An, Li, Bing, Li, Chao-Yang, Li, Cheng-Kui, Li, Gang, Li, Mao-Shun, Li, Ti-Pei, Li, Wei, Li, Xiao-Bo, Li, Xin-Qiao, Li, Xu-Fang, Li, Yan-Guo, Li, Zheng-Wei, Liang, Jing, Liang, Xiao-Hua, Liao, Jin-Yuan, Lin, Lin, Liu, Cong-Zhan, Liu, He-Xin, Liu, Hong-Wei, Liu, Jia-Cong, Liu, Xiao-Jing, Liu, Ya-Qing, Liu, Yu-Rong, Lu, Fang-Jun, Lu, Hong, Lu, Xue-Feng, Luo, Qi, Luo, Tao, Ma, Bin-Yuan, Ma, Fu-Li, Ma, Rui-Can, Ma, Xiang, Maccary, Romain, Mao, Ji-Rong, Meng, Bin, Nie, Jian-Yin, Orlandini, Mauro, Ou, Ge, Peng, Jing-Qiang, Peng, Wen-Xi, Qiao, Rui, Qu, Jin-Lu, Ren, Xiao-Qin, Shi, Jing-Yan, Shi, Qi, Song, Li-Ming, Song, Xin-Ying, Su, Ju, Sun, Gong-Xing, Sun, Liang, Sun, Xi-Lei, Tan, Wen-Jun, Tan, Ying, Tao, Lian, Tuo, You-Li, Turpin, Damien, Wang, Jin-Zhou, Wang, Chen, Wang, Chen-Wei, Wang, Hong-Jun, Wang, Hui, Wang, Jin, Wang, Ling-Jun, Wang, Peng-Ju, Wang, Ping, Wang, Wen-Shuai, Wang, Xiang-Yu, Wang, Xi-Lu, Wang, Yu-Sa, Wang, Yue, Wen, Xiang-Yang, Wu, Bo-Bing, Wu, Bai-Yang, Wu, Hong, Xiao, Sheng-Hui, Xiao, Shuo, Xiao, Yun-Xiang, Xie, Sheng-Lun, Xiong, Shao-Lin, Xiong, Sen-Lin, Xu, Dong, Xu, He, Xu, Yan-Jun, Xu, Yan-Bing, Xu, Ying-Chen, Xu, Yu-Peng, Xue, Wang-Chen, Yang, Sheng, Yang, Yan-Ji, Yang, Zi-Xu, Ye, Wen-Tao, Yi, Qi-Bin, Yi, Shu-Xu, Yin, Qian-Qing, You, Yuan, Yu, Yun-Wei, Yu, Wei, Yu, Wen-Hui, Zeng, Ming, Zhang, Bing, Zhang, Bin-Bin, Zhang, Da-Li, Zhang, Fan, Zhang, Hong-Mei, Zhang, Juan, Zhang, Liang, Zhang, Peng, Zhang, Shu, Zhang, Shuang-Nan, Zhang, Wan-Chang, Zhang, Xiao-Feng, Zhang, Xiao-Lu, Zhang, Yan-Qiu, Zhang, Yan-Ting, Zhang, Yi-Fei, Zhang, Yuan-Hang, Zhang, Zhen, Zhao, Guo-Ying, Zhao, Hai-Sheng, Zhao, Hong-Yu, Zhao, Qing-Xia, Zhao, Shu-Jie, Zhao, Xiao-Yun, Zhao, Xiao-Fan, Zhao, Yi, Zheng, Chao, Zheng, Shi-Jie, Zhou, Deng-Ke, Zhou, Xing, Zhu, Xiao-Cheng
GRB 221009A is the brightest gamma-ray burst ever detected since the discovery of this kind of energetic explosions. However, an accurate measurement of the prompt emission properties of this burst is very challenging due to its exceptional brightnes
Externí odkaz:
http://arxiv.org/abs/2303.01203
Autor:
Zhu, Zi-Pei, Xu, Dong, Fynbo, Johan P. U., Fu, Shao-Yu, Liu, Xing, Jiang, Shuai-Qing, Xiao, Shuo, Xie, Wei, Zou, Yuan-Chuan, Gao, He, Hartmann, Dieter, Postigo, Antonio de Ugarte, Kann, David Alexander, Della Valle, Massimo, Jakobsson, Pall, Zafar, Tayabba, D'Elia, Valerio, Xin, Li-Ping, Wei, Jian-Yan, Gao, Xing, Liu, Jin-Zhong, Lu, Tian-Hua, Lei, Wei-Hua
Early optical observations of gamma-ray bursts can significantly contribute to the study of the central engine and physical processes therein. However, of the thousands observed so far, still only a few have data at optical wavelengths in the first m
Externí odkaz:
http://arxiv.org/abs/2302.09722
Autor:
Ronchini, Samuele, Stratta, Giulia, Rossi, Andrea, Kann, David Alexander, Oganesyan, Gor, Dall'Osso, Simone, Branchesi, Marica, De Cesare, Giovanni
Publikováno v:
A&A 675, A117 (2023)
A large fraction of gamma-ray bursts (GRBs) shows a plateau phase during the X-ray afterglow emission, whose physical origin is still debated. In this work we define a sample of 30 GRBs with simultaneous X-ray and optical data during and after the pl
Externí odkaz:
http://arxiv.org/abs/2211.00661
Autor:
Cappellazzo, Elizabeth, Zafar, Tayyaba, Corcho-Caballero, Pablo, Kann, David Alexander, López-Sánchez, Ángel, Ahmad, Adeel
We modelled dust grain-size distributions for carbonaceous and silicates dust, as well as for free-flying iron nanoparticles in the environment of a $\gamma$-ray burst (GRB) afterglow, GRB 180325A. This GRB, at $z=2.2486$, has an unambiguous detectio
Externí odkaz:
http://arxiv.org/abs/2210.10423
Autor:
Lü, Hou-Jun, Lan, Lin, Zhang, Bing, Liang, En-Wei, Kann, David Alexander, Du, Shen-Shi, Shen, Jun
The favored progenitor model for Gamma-ray Bursts (GRBs) with Supernova (SN) association is the core collapse of massive stars. One possible outcome of such a collapse is a rapidly spinning, strongly magnetized neutron star ("magnetar"). We systemati
Externí odkaz:
http://arxiv.org/abs/1806.06249
Autor:
Kim, Sam, Schulze, Steve, Resmi, Lekshmi, González-López, Jorge, Higgins, Adam. B., Ishwara-Chandra, C. H., Bauer, Franz. E., de Gregorio-Monsalvo, Itziar, De Pasquale, Massimiliano, Postigo, Antonio de Ugarte, Kann, David A., Martín, Sergio, Oates, Samantha R., Starling, Rhaana L. C., Tanvir, Nial. R., Buchner, Johannes, Campana, Sergio, Cano, Zach, Covino, Stefano, Fruchter, Andrew S., Fynbo, Johan P. U., Hartmann, Dieter H., Hjorth, Jens, Jakobsson, Pall P., Levan, Andrew J., Malesani, Daniele, Michałowski, Michal J., Milvang-Jensen, Bo, Misra, Kuntal, O'Brien, Paul T., Sánchez-Ramírez, Rubén, Thöne, Christina C., Watson, Darach J., Wiersema, Klaas
Binary neutron-star mergers (BNSMs) are among the most readily detectable gravitational-wave (GW) sources with LIGO. They are also thought to produce short $\gamma$-ray bursts (SGRBs), and kilonovae that are powered by r-process nuclei. Detecting the
Externí odkaz:
http://arxiv.org/abs/1710.05847
Autor:
Kann, David Alexander
The number of detections as well as significantly deep non-detections of optical/NIR afterglows of Type I (short-duration population) Gamma-Ray Bursts (GRBs) has become large enough that statistically meaningful samples can now be constructed. I pres
Externí odkaz:
http://arxiv.org/abs/1212.0040
Autor:
Filgas, Robert, Greiner, Jochen, Schady, Patricia, Kruehler, Thomas, Updike, Adria C., Klose, Sylvio, Nardini, Marco, Kann, David Alexander, Rossi, Andrea, Sudilovsky, Vladimir, Afonso, Paulo M. J., Clemens, Christian, Elliott, Jonny, Guelbenzu, Ana Nicuesa, Estay, Felipe Olivares, Rau, Arne
Using high-quality, broad-band afterglow data for GRB 091127, we investigate the validity of the synchrotron fireball model for gamma-ray bursts, and infer physical parameters of the ultra-relativistic outflow. We used multi-wavelength follow-up obse
Externí odkaz:
http://arxiv.org/abs/1109.2810