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Your search keyword '"Yang, XiaoLong"' showing total 10 results
Start Over Author "Yang, XiaoLong" Search Limiters Full Text Publication Year Range Last 10 years Journal monthly notices of the royal astronomical society
10 results on '"Yang, XiaoLong"'

2. The radio detection and accretion properties of the peculiar nuclear transient AT 2019avd

Author

Wang, Yanan, primary, Baldi, Ranieri D, additional, del Palacio, Santiago, additional, Guolo, Muryel, additional, Yang, Xiaolong, additional, Zhang, Yangkang, additional, Done, Chris, additional, Castro Segura, Noel, additional, Pasham, Dheeraj R, additional, Middleton, Matthew, additional, Altamirano, Diego, additional, Gandhi, Poshak, additional, Qiao, Erlin, additional, Jiang, Ning, additional, Yan, Hongliang, additional, Giroletti, Marcello, additional, Migliori, Giulia, additional, McHardy, Ian, additional, Panessa, Francesca, additional, Jin, Chichuan, additional, Shen, Rongfeng, additional, and Dai, Lixin, additional

Published
2023
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5. compact symmetric ejection from the low mass AGN in the LINER galaxy NGC 4293.

Author

Yang, Xiaolong, Wang, Ruiling, and Guo, Quan

Subjects
*RADIO galaxies, *ACTIVE galactic nuclei, *GALAXIES, *BLACK holes, *ANGULAR distance, *ACTIVE galaxies
Abstract

We conducted a Very Long Baseline Array (VLBA) observation of the low mass active galactic nucleus (AGN) in galaxy NGC 4293 (z  = 0.003). The object is associated with a low-ionization nuclear emission-line region (LINER). Its black hole mass is estimated as ∼105 or |${\sim}10^7 \, \mathrm{M}_\odot$|⁠. The VLBA 1.5 GHz image shows an inverse symmetric structure with two discrete radio blobs separated by an angular distance of ∼120 mas, corresponding to ∼7 parsec. Furthermore, its integrated radio spectrum has a turnover at the frequency of ∼0.44 GHz. Based on the compactness and spectrum, the nuclear radio source in NGC 4293 belongs to a sample of (megahertz) peaked spectrum (PS/MPS) radio sources with compact symmetric morphologies. NGC 4293 has 1.4 GHz radio power of only |${\sim}10^{20}\, \mathrm{W\, Hz^{-1}}$| with the VLBA observation, which is consistent with local AGNs but lower than the current PS samples. One of the two blobs has a steep radio spectrum α = −0.62 ± 0.08 (S ν ∝ ν+α), while the other one has an inverted spectrum α = 0.32 ± 0.10. The VLBA 1.5 GHz luminosity ratio of the two blobs is 3.23 and both blobs show lateral-flowing structures where the hotspots reside at the edge of each radio lobe. This can be explained as jet interactions with dense circumnuclear medium. We estimate the black hole mass of NGC 4293 through the Fundamental Plane of black hole activity, which constrains the black hole mass to be |${\lesssim}10^6\, \mathrm{M}_\odot$|⁠. It supports that the object is a low-mass AGN and a potential candidate for accreting and ejecting IMBHs. [ABSTRACT FROM AUTHOR]

Published
2022
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8. J2102+6015: a young radio source at z = 4.575

Author

Zhang, Yingkang, primary, An, Tao, additional, Frey, Sándor, additional, Yang, Xiaolong, additional, Krezinger, Máté, additional, Titov, Oleg, additional, Melnikov, Alexey, additional, de Vicente, Pablo, additional, Shu, Fengchun, additional, and Wang, Ailing, additional

Published
2021
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9. The obstructed jet in Mrk 231

Author

Wang, Ailing, primary, An, Tao, additional, Jaiswal, Sumit, additional, Mohan, Prashanth, additional, Wang, Yuchan, additional, Baan, Willem A, additional, Zhang, Yingkang, additional, and Yang, Xiaolong, additional

Published
2021
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