Results 141 to 150 of about 37,389 (216)

A Reverberation Mapping Study of a Highly Variable Active Galactic Nucleus 6dFGS gJ022550.0-060145

The Astrophysical Journal
We use LCOGT observations (MJD 59434−59600) with a total exposure time of ≃50 hr and a median cadence of 0.5 day to measure the interband time delays (with respect to u ) in the g , r , and i continua of a highly variable active galactic nucleus (AGN ...
Danyang Li, Mouyuan Sun, Junfeng Wang, Jianfeng Wu, Zhixiang Zhang   +4 more
doaj   +1 more source

Mid-infrared Variability-based Active Galactic Nucleus Selection Using the Multiepoch Photometric Data from WISE

The Astrophysical Journal
We assess the systematics and efficiency of an active galactic nucleus (AGN) selection method based on mid-infrared (MIR) variability. To this end, we utilize various types of active and inactive galaxies from the Sloan Digital Sky Survey, matching them ...
Shinyu Kim, Minjin Kim, Suyeon Son, Luis C. Ho   +3 more
doaj   +1 more source

Resolving a Candidate Dual Active Galactic Nucleus with ∼100 pc Separation in MCG-03-34-64

The Astrophysical Journal
We report the serendipitous multiwavelength discovery of a candidate dual black hole system with a separation of ∼100 pc, in the gas-rich luminous infrared galaxy MCG-03-34-64 ( z = 0.016).
Anna Trindade Falcão, T. J. Turner, S. B. Kraemer, J. Reeves, V. Braito, H. R. Schmitt, L. Feuillet   +6 more
doaj   +1 more source

Polarized thermal emission from dust in a galaxy at redshift 2.6. [PDF]

Nature, 2023
Geach JE, Lopez-Rodriguez E, Doherty MJ, Chen J, Ivison RJ, Bendo GJ, Dye S, Coppin KEK.   +7 more
europepmc   +1 more source

A tidal disruption event from an intermediate-mass black hole revealed by comprehensive multi-wavelength observations. [PDF]

Nat Commun
Wang J, Huang M, Xue Y, Jiang N, Huang S, Wang Y, Zhu J, Zhu S, Dai L, Jin C, Luo B, Shu X, Sun M, Wang T, Zou F.   +14 more
europepmc   +1 more source

Programmed cell death and redox metabolism protect Chlamydomonas reinhardtii populations from the galactic cosmic environment on the Artemis-1 mission. [PDF]

Sci Rep
Hammond TG, Panikkanvalappil SR, Allen PL, Gaikani HK, Nislow C, Giaever G, Zhang Y, Levine HG, Gaza R, Dimapilis D, Wells HW, Russick JM, Durand PM, Birdsall HH.   +13 more
europepmc   +1 more source

Asymmetric eROSITA bubbles as the evidence of a circumgalactic medium wind. [PDF]

Nat Commun, 2023
Mou G, Sun D, Fang T, Wang W, Zhang R, Yuan F, Sofue Y, Wang T, He Z.   +8 more
europepmc   +1 more source

Proton Acceleration with Relativistic Electromagnetic Shock. [PDF]

Adv Sci (Weinh)
Xiao T, Zhang X, Kong F, Zheng X, Gong Z, Shen B.   +5 more
europepmc   +1 more source

Strong long-term variability in active galactic nuclei affects virial black hole mass measurements. [PDF]

Nat Commun
Amrutha N, Wolf C, Onken CA, Hon WJ, Lai S, Raithel D, Tan AHT, Webster R.   +7 more
europepmc   +1 more source

CONfirm: A Spectacular Galactic Scale MHD Powered Wind in ESO~320-G030

, 2023
Gorski M, Aalto S, König S, Wethers C, Yang C, Onishi K, Falstad N, Barcos-Muñoz L, Combes F, Dìaz-Santos T, Evans A, Gallagher J, Garcia-Burillo S, González-Alfonso E, Harada N, Henkel C, Imanishi M, Linden S, Muller S, Sato M, Mangum J, Martin S, Stanley F, Werf Pvd, Viti S, Wada K.   +25 more
europepmc   +1 more source