Tootfinder

No apparent forbidden/permitted narrow emission lines in the broad line quasar SDSS J1251 0613
Zhang XueGuang (GXU)
https://arxiv.org/abs/2506.18400 https:…

No apparent forbidden/permitted narrow emission lines in the broad line quasar SDSS J1251+0613
Strong both broad and narrow emission lines from central broad emission line regions (BLRs) and narrow emission line regions (NLRs) are fundamental spectroscopic characteristics of broad line Active Galactic Nuclei (BLAGNs). Lack of central BLRs leads to the identified true Type-2 AGNs without central hidden BLRs, providing clues on formation/suppression of AGN BLRs. Whether were there BLAGNs with lack of central NLRs is still an open question. Here, in the blue quasar SDSS J1251+0613, both blu…

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