Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Yogesh Chandola"'
Autor:
Yogesh Chandola, D. J. Saikia, Yin-Zhe Ma, Zheng Zheng, Chao-Wei Tsai, Di Li, Denis Tramonte, Hengxing Pan
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 1, p 48 (2024)
Neutral atomic hydrogen and molecular gas in the host galaxies of radio active galactic nuclei can be traced using H i 21 cm and OH-1667 MHz absorption lines to understand the fueling and feedback processes. We present the results of an H i and OH ab
Externí odkaz:
https://doaj.org/article/edc4dcb957894229a1a9a842dbf6632e
Autor:
Renzhi Su, Elizabeth K Mahony, Minfeng Gu, Elaine M Sadler, S J Curran, James R Allison, Hyein Yoon, J N H S Aditya, Yogesh Chandola, Yongjun Chen, Vanessa A Moss, Zhongzu Wu, Xi Shao, Xiang Liu, Marcin Glowacki, Matthew T Whiting, Simon Weng
We present new upgraded Giant Metrewave Radio Telescope (uGMRT) HI 21-cm observations of the ultra-luminous infrared galaxy IRAS 10565+2448, previously reported to show blueshifted, broad, and shallow HI absorption indicating an outflow. Our higher s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::259c71d0d26c1f23986027402e6fc62f
Autor:
Yun-Fan Zhou, Nick Houston, Gyula I. G. Józsa, Hao Chen, Yin-Zhe Ma, Qiang Yuan, Tao An, Yogesh Chandola, Ran Ding, Fujun Du, Shao-Guang Guo, Xiaoyuan Huang, Mengtian Li, Chandreyee Sengupta
Publikováno v:
Physical Review D. 106
Axions provide a natural and well-motivated dark matter candidate, with the capability to convert directly to photons in the presence of an electromagnetic field. A particularly compelling observational target is the conversion of dark matter axions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ea98819e9745dc46652c55ac0c1c53d
https://doi.org/10.1103/physrevd.106.083006
https://doi.org/10.1103/physrevd.106.083006
Constraints on dark matter annihilation from the FAST observation of the Coma Berenices dwarf galaxy
The Galactic center $\gamma$-ray excess, detected by the Fermi-LAT, is a very attractive tentative signal from dark matter annihilation. Searching for associated synchrotron emissions can test the dark matter interpretation for this excess. We geared
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c8a234bc9b63956c45e9f990dc3c91b
http://arxiv.org/abs/2209.15590
http://arxiv.org/abs/2209.15590
Autor:
Yun-Fan Zhou, Chandreyee Sengupta, Yogesh Chandola, O Ivy Wong, Tom C Scott, Yin-Zhe Ma, Hao Chen
We present results from an HI counterpart search using the HI Parkes All Sky Survey (HIPASS) for a sample of low surface brightness galaxies (LSBGs) and ultradiffuse galaxies (UDGs) identified from the Dark Energy Survey (DES). We aimed to establish
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e2c4a729004b871df2b8026200e4b84
Autor:
Lei Yang, Xinwen Shu, Fabao Zhang, Yogesh Chandola, Daizhong Liu, Yi Liu, Minfeng Gu, Margherita Giustini, Ning Jiang, Ya-Ping Li, Di Li, David Elbaz, Stephanie Juneau, Maurilio Pannella, Luming Sun, Ningyu Tang, Tinggui Wang, Hongyan Zhou
Publikováno v:
The Astrophysical Journal
The Astrophysical Journal, 2022, 935, ⟨10.3847/1538-4357/ac80ba⟩
The Astrophysical Journal, 2022, 935, ⟨10.3847/1538-4357/ac80ba⟩
RX J1301.9+2747 is a unique active galaxy with supersoft X-ray spectrum that lacks significant emission at energies above 2 keV. In addition, it is one of few galaxies displaying quasi-periodic X-ray eruptions that recur on a timescale of 13-20 ks. W
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7591645f5f65390be1f4633068bef385
We present results of H I absorption experiment done using the Giant Metrewave Radio Telescope (GMRT) towards 27 low- and intermediate-luminosity ($P_{\rm 1.4 GHz}$ $\sim$10$^{23}$-10$^{26}$ W Hz$^{-1}$) radio active galactic nuclei (AGN), classified
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f853d27f03b694239133f3c69b5a5b42
http://arxiv.org/abs/2004.07074
http://arxiv.org/abs/2004.07074
Autor:
Yogesh Chandola, D. J. Saikia
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 465:997-1007
H{\sc i} absorption studies of active galaxies enable us to probe their circumnuclear regions and the general interstellar medium, and study the supply of gas which may trigger the nuclear activity. In this paper, we investigate the detection rate of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a3530b5017a6db377010b43e15d3485
https://doi.org/10.1093/mnras/stw2705
https://doi.org/10.1093/mnras/stw2705
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 418:1787-1795
We present the results of HI absorption measurements towards a sample of nearby Compact Steep-Spectrum (CSS) and Giga-Hertz Peaked Spectrum (GPS) radio sources, the CORALZ sample, using the Giant Metrewave Radio Telescope (GMRT). We observed a sample
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26c18fc33d8cc02e3b65f977454d3d65
https://doi.org/10.1111/j.1365-2966.2011.19607.x
https://doi.org/10.1111/j.1365-2966.2011.19607.x
We present the results of Giant Metrewave Radio Telescope (GMRT) observations to detect H{\sc i} in absorption towards the cores of a sample of radio galaxies. From observations of a sample of 16 sources, we detect H{\sc i} in absorption towards the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48ed85a061d852e0c9bda4b03be73266