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• W2108900979 abstract "We report a new double-double radio quasar, DDRQ, J0746$+$4526 which exhibits two cycles of episodic activity. From radio continuum observations at 607 MHz using the GMRT and 1400 MHz from the FIRST survey we confirm its episodic nature. We examine the SDSS optical spectrum and estimate the black hole mass to be (8.2$pm$0.3)$times$10$^7$M$_odot$ from its observed MgII emission line, and the Eddington ratio to be 0.03. The black hole mass is significantly smaller than for the other reported DDRQ, J0935+0204, while the Eddington ratios are comparable. The SDSS spectrum is significantly red continuum dominated suggesting that it is highly obscured with ${E(B-V)}_{host}=0.70pm0.16$ mag. This high obscuration further indicates the existence of a large quantity of dust and gas along the line of sight, which may have a key role in triggering the recurrent jet activity in such objects." @default.
• W2108900979 created "2016-06-24" @default.
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• W2108900979 date "2014-06-10" @default.
• W2108900979 modified "2023-09-25" @default.
• W2108900979 title "DISCOVERY OF A RED QUASAR WITH RECURRENT ACTIVITY" @default.
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• W2108900979 doi "https://doi.org/10.1088/0004-637x/789/1/16" @default.
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