An Active Galactic Nucleus Recognition Model based on Deep Neural Network

Chen, Bo Han; Goto, Tomotsugu; Kim, Seong Jin; Wang, Ting Wen; Santos, Daryl Joe D; Ho, Simon C-C; Hashimoto, Tetsuya; Poliszczuk, Artem; Pollo, Agnieszka; Trippe, Sascha; Miyaji, Takamitsu; Toba, Yoshiki; Malkan, Matthew; Serjeant, Stephen; Pearson, Chris; Hwang, Ho Seong; Kim, Eunbin; Shim, Hyunjin; Lu, Ting Yi; Hsiao, Yu-Yang; Huang, Ting-Chi; Herrera-Endoqui, Martín; Bravo-Navarro, Blanca and Matsuhara, Hideo (2021). An Active Galactic Nucleus Recognition Model based on Deep Neural Network. Monthly Notices of the Royal Astronomical Society, 501(3) pp. 3951–3961.



To understand the cosmic accretion history of supermassive black holes, separating the radiation from active galactic nuclei (AGNs) and star-forming galaxies (SFGs) is critical. However, a reliable solution on photometrically recognising AGNs still remains unsolved. In this work, we present a novel AGN recognition method based on Deep Neural Network (Neural Net; NN). The main goals of this work are (i) to test if the AGN recognition problem in the North Ecliptic Pole Wide (NEPW) field could be solved by NN; (ii) to shows that NN exhibits an improvement in the performance compared with the traditional, standard spectral energy distribution (SED) fitting method in our testing samples; and (iii) to publicly release a reliable AGN/SFG catalogue to the astronomical community using the best available NEPW data, and propose a better method that helps future researchers plan an advanced NEPW database. Finally, according to our experimental result, the NN recognition accuracy is around 80.29% - 85.15%, with AGN completeness around 85.42% - 88.53% and SFG completeness around 81.17% - 85.09%.

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  • Item ORO ID
  • 74540
  • Item Type
  • Journal Item
  • ISSN
  • 1365-2966
  • Academic Unit or School
  • Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
    Faculty of Science, Technology, Engineering and Mathematics (STEM)
  • Copyright Holders
  • © 2020 Bo Han Chen, © 2020 Tomotsugu Goto, © 2020 Seong Jin Kim, © 2020 Ting Wen Wang, © 2020 Daryl Joe D. Santos, © 2020 Simon C.-C. Ho, © 2020 Tetsuya Hashimoto, © 2020 Artem Poliszczuk, © 2020 Agnieszka Pollo, © 2020 Sascha Trippe, © 2020 Takamitsu Miyaji, © 2020 Yoshiki Toba, © 2020 Matthew Malkan, © 2020 Stephen Serjeant, © 2020 Chris Pearson, © 2020 Ho Seong Hwang, © 2020 Eunbin Kim, © 2020 Hyunjin Shim, © 2020 Ting Yi Lu, © 2020 Yu-Yang Hsiao, © 2020 Ting-Chi Huang, © 2020 MartÃŋn Herrera-Endoqui, © 2020 Blanca Bravo-Navarro, © 2020 Hideo Matsuhara
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