Zobrazeno 1 - 10
of 884
pro vyhledávání: '"Kumar Brajesh"'
Autor:
Cheng, Yehao, Pan, Yu, Yang, Yuan-Pei, Zhang, Jinghua, Du, Guowang, Fang, Yuan, Kumar, Brajesh, Guo, Helong, Er, Xinzhong, Chen, Xinlei, Liu, Chenxu, Wang, Tao, Qin, Zhenfei, Jin, Yicheng, Zou, Xingzhu, Han, Xuhui, Zhang, Pinpin, Xin, Liping, Wu, Chao, Lian, Jianhui, Liu, Xiangkun, Liu, Xiaowei
Gamma-ray bursts (GRBs) are the most luminous transients in the universe. The interaction of the relativistic jet with the circumburst medium produces an afterglow and generates multiwavelength emission. In this work, we present simultaneous multiban
Externí odkaz:
http://arxiv.org/abs/2409.14716
Autor:
Rawat, Vineet, Samal, M. R., Ojha, D. K., Kumar, Brajesh, Sharma, Saurabh, Jose, J., Sagar, Ram, Yadav, R. K.
We present a detailed near-infrared study of an embedded cluster located in the hub of the giant molecular cloud G148.24+00.41 of mass $\sim$10$^5$ $M_\odot$, with the TANSPEC instrument mounted on the 3.6 m Devasthal Optical Telescope. The hub is lo
Externí odkaz:
http://arxiv.org/abs/2408.12969
We report and discuss phase-shift and phase travel time of low-frequency ({\nu} < 5.0 mHz) acoustic waves estimated within the photosphere and photosphere-chromosphere interface regions, utilizing multi-height velocities in the quiet Sun. The bisecto
Externí odkaz:
http://arxiv.org/abs/2406.19789
Autor:
Yang, Yuan-Pei, Liu, Xiangkun, Pan, Yu, Er, Xinzhong, Liu, Dezi, Fang, Yuan, Du, Guowang, Cai, Yongzhi, Xu, Xian, Chen, Xinlei, Zou, Xingzhu, Guo, Helong, Liu, Chenxu, Cheng, Yehao, Kumar, Brajesh, Liu, Xiaowei
SN 2023ixf, recently reported in the nearby galaxy M101 at a distance of $6.85~{\rm Mpc}$, was one of the closest and brightest core-collapse supernovae (CCSNe) in the last decade. In this work, we present multi-wavelength photometric observation of
Externí odkaz:
http://arxiv.org/abs/2405.08327
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
Publikováno v:
ApJL, 2024, 971:L2
We present early-phase good-cadence (hour-to-day) simultaneous multiband ($ugi$ and $vrz$ bands) imaging of the nearby supernova SN~2024ggi, which exploded in the nearby galaxy, NGC 3621. A quick follow-up was conducted within less than a day after t
Externí odkaz:
http://arxiv.org/abs/2405.07964
Publikováno v:
Green Processing and Synthesis, Vol 6, Iss 1, Pp 23-30 (2017)
This report describes a rapid, facile and an ecofriendly synthesis of silver nanoparticles (AgNps) using fruit extracts of Shora (Capparis petiolaris) and further as-synthesized AgNps were characterized by UV-vis spectroscopy, transmission electron m
Externí odkaz:
https://doaj.org/article/ac39c66208814692be99785a99c1d9e0
Autor:
Liu, Chenxu, Chen, Xinlei, Er, Xinzhong, Zeimann, Gregory R., Vinko, Jozsef, Wheeler, J. Craig, Cooper, Erin Mentuch, Davis, Dustin, Farrow, Daniel J., Gebhardt, Karl, Guo, Helong, Hill, Gary J., House, Lindsay, Kollatschny, Wolfram, Kong, Fanchuan, Kumar, Brajesh, Liu, Xiangkun, Tuttle, Sarah, Endl, Michael, Duke, Parker, Cochran, William D., Zhang, Jinghua, Liu, Xiaowei
Supernova (SN) 2023ixf was discovered on May 19th, 2023. The host galaxy, M101, was observed by the Hobby Eberly Telescope Dark Energy Experiment (HETDEX) collaboration over the period April 30, 2020 -- July 10, 2020, using the Visible Integral-field
Externí odkaz:
http://arxiv.org/abs/2311.10400
Autor:
Surdej, Jean, Ailawadhi, Bhavya, Akhunov, Talat, Borra, Ermanno, Dubey, Monalisa, Dukiya, Naveen, Fu, Jiuyang, Grewal, Baldeep, Hickson, Paul, Kumar, Brajesh, Misra, Kuntal, Negi, Vibhore, Pospieszalska-Surdej, Anna, Pranshu, Kumar, Sun, Ethen
The present article is based upon an invited talk delivered at the occasion of the inauguration of the 4m International Liquid Mirror Telescope (ILMT) which took place in Devasthal (ARIES, Uttarakhand, India) on 21st of March 2023. We present hereaft
Externí odkaz:
http://arxiv.org/abs/2311.05623
Autor:
Sun, Ethen, Ailawadhi, Bhavya, Akhunov, Talat, Borra, Ermanno, Dubey, Monalisa, Dukiya, Naveen, Fu, Jiuyang, Grewal, Baldeep, Hickson, Paul, Kumar, Brajesh, Misra, Kuntal, Negi, Vibhore, Pranshu, Kumar, Surdej, Jean
Recent research suggests a correlation between the variability and intrinsic brightness of quasars. If calibrated, this could lead to the use of quasars on the cosmic distance ladder, but this work is currently limited by lack of quasar light curve d
Externí odkaz:
http://arxiv.org/abs/2311.05622
Autor:
Fu, Jiuyang, Ailawadhi, Bhavya, Akhunov, Talat, Borra, Ermanno, Dubey, Monalisa, Dukiya, Naveen, Grewal, Baldeep, Hickson, Paul, Kumar, Brajesh, Misra, Kuntal, Negi, Vibhore, Pranshu, Kumar, Sun, Ethen, Surdej, Jean
Low surface brightness (LSB) galaxies make up a significant fraction of the luminosity density of the local universe. Their low surface brightness suggests a different formation and evolution process compared to more-typical high-surface-brightness g
Externí odkaz:
http://arxiv.org/abs/2311.05621