Navegação Ciências Exatas e da Terra por Assunto "X-ray active galactic nuclei"

Resultados 1-6 de 6

    • BASS. XXII : the BASS DR2 AGN catalog and data 

      Koss, Michael; Riffel, Rogério; Williams, Jonathan (2022) [Artigo de periódico]
      We present the active galactic nucleus (AGN) catalog and optical spectroscopy for the second data release of the Swift BAT AGN Spectroscopic Survey (BASS DR2). With this DR2 release we provide 1449 optical spectra, of which ...

    • BASS. XXIV : the BASS DR2 spectroscopic line measurements and AGN demographics 

      Oh, Kyuseok; Koss, Michael; Ueda, Yoshihiro; Stern, Daniel; Ricci, Claudio; Trakhtenbrot, Benny; Powell, Meredith; Brok, Jakob den; Lamperti, Isabella; Mushotzky, Richard; Ricci, Federica; Bär, Rudolf; Rojas, Alejandra; Ichikawa, Kohei; Riffel, Rogério; Treister, Ezequiel; Harrison, Fiona Anne; Urry, C. Megan; Bauer, Franz Erik; Schawinski, Kevin (2022) [Artigo de periódico]
      We present the second catalog and data release of optical spectral line measurements and active galactic nucleus (AGN) demographics of the BAT AGN Spectroscopic Survey, which focuses on the Swift-BAT hard X-ray detected ...

    • BASS. XXIX : the near-infrared view of the broad-line region (BLR) : the effects of obscuration in BLR characterization 

      Ricci, Federica; Riffel, Rogério; Veilleux, Sylvain (2022) [Artigo de periódico]
      Virial black hole (BH) mass (MBH) determination directly involves knowing the broad-line region (BLR) clouds' velocity distribution, their distance from the central supermassive BH (RBLR), and the virial factor (f). ...

    • BASS. XXXV.: The MBH–σ* Relation of 105Month Swift-BAT Type 1 AGNs 

      Caglar, Turgay; Riffel, Rogério; Urry, C. Megan (2023) [Artigo de periódico]
      We present two independent measurements of stellar velocity dispersions (σå) from the Ca II H+K λ3969, 3934 and Mg I b λ 5183, 5172, 5167 region (3880–5550 Å) and the calcium triplet region (8350–8750 Å) for 173 hard ...

    • Termination shocks and the extended X-ray emission in Mrk 78 

      Fornasini, Francesca; Elvis, Martin; Maksym, W. Peter; Fabbiano, Giuseppina; Storchi-Bergmann, Thaisa; Gandhi, Poshak; Whittle, Mark (2022) [Artigo de periódico]
      Subarcsecond imaging of the X-ray emission in the type 2 active galactic nucleus (AGN) Mrk 78 with Chandra shows complex structure with spectral variations on scales from ∼200 pc to ∼2 kpc. Overall the X-ray emission is ...

    • A UFO Seen Edge-on? : resolving Ultrafast Outflow Emission on ∼200 pc Scales with Chandra in the Active Nucleus of Mrk 34 

      Maksym, W. Peter; Elvis, Martin; Fabbiano, Giuseppina; Falcão, Anna Luiza Trindade; Kraemer, S. B.; Fischer, Travis C.; Crenshaw, Daniel Michael; Storchi-Bergmann, Thaisa (2023) [Artigo de periódico]
      We present Chandra ACIS imaging spectroscopy of the nucleus of the Seyfert 2 Galaxy Mrk 34. We identify spatially and spectrally resolved features in the band that includes Fe Kα, Fe xxv, and Fe xxvi. These features suggest ...