Zobrazeno 1 - 10
of 99
pro vyhledávání: '"Wagoner, Robert V."'
In a previous paper, we reported evidence for quasi-periodicities in the \textsl{TESS} light curves of BL Lacerate and two other blazars found serendipitously in the SDSS AGN catalog. In this work, we find tentative evidence for quasi-periodic featur
Externí odkaz:
http://arxiv.org/abs/2402.04352
We report the time series analysis of TESS light curves of three blazars, BL Lacertae, 1RXS J111741.0+254858, and 1RXS J004519.6+212735, obtained using a customized approach for extracting AGN light curves. We find tentative evidence for quasi-period
Externí odkaz:
http://arxiv.org/abs/2312.14144
Autor:
Wagoner, Robert V., Tandon, Celia R.
Publikováno v:
2021 Res. Notes AAS 5, 274
We compare some predictions of Wagoner & Tandon (2021) with the results of the hydrodynamic and magnetohydrodynamic (MHD) simulations of Reynolds & Miller (2009). It appears that the MHD simulations were not run for long enough and the numerical damp
Externí odkaz:
http://arxiv.org/abs/2112.01415
Autor:
Wagoner, Robert V., Tandon, Celia R.
Publikováno v:
Astrophysical Journal 920:114 (2021)
We investigate the effects of subsonic turbulence on a normal mode of oscillation [a possible origin of the high-frequency quasi-periodic oscillations (HFQPOs) within some black hole accretion disks]. We consider perturbations of a time-dependent bac
Externí odkaz:
http://arxiv.org/abs/2107.13546
Publikováno v:
2021ApJ...906...92S
We compile observations of high-frequency quasi-periodic oscillations (QPOs) around black holes, both stellar and supermassive, and compare their positions in the parameter space of black hole mass, spin, and oscillation frequency. We find that super
Externí odkaz:
http://arxiv.org/abs/2011.05346
We report evidence for a quasi-periodic oscillation (QPO) in the optical light curve of KIC 9650712, a narrow-line Seyfert 1 galaxy in the original Kepler field. After the development and application of a pipeline for Kepler data specific to active g
Externí odkaz:
http://arxiv.org/abs/1805.12154
Autor:
Aschwanden, Markus J., Scholkmann, Felix, Bethune, William, Schmutz, Werner, Abramenko, Valentina, Cheung, Mark, Mueller, Daniel, Benz, Arnold, Kurths, Juergen, Chernov, Guennadi, Kritsuk, Alexei G., Scargle, Jeffrey D., Melatos, Andrew, Wagoner, Robert V., Trimble, Virginia, Green, William
Publikováno v:
Space Science Reviews (2018), Vol. 214: 55
Self-organization is a property of dissipative nonlinear processes that are governed by an internal driver and a positive feedback mechanism, which creates regular geometric and/or temporal patterns and decreases the entropy, in contrast to random pr
Externí odkaz:
http://arxiv.org/abs/1708.03394
Autor:
Ortega-Rodríguez, Manuel, Solís-Sánchez, Hugo, Arguedas-Leiva, J. Agustín, Wagoner, Robert V., Levine, Adam
Publikováno v:
The Astrophysical Journal 809:15 (2015)
Diskoseismology, the theoretical study of normal mode oscillations in geometrically thin, optically thick accretion disks, is a strong candidate to explain some QPOs in the power spectra of many black hole X-ray binary systems. The existence of g-mod
Externí odkaz:
http://arxiv.org/abs/1506.08314
Akademický článek
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Autor:
Wagoner, Robert V.
Publikováno v:
Ap.J. 752, L18 (2012)
We compare the determinations of the angular momentum of stellar mass black holes via the continuum and line methods with those from diskoseismology. The assumption being tested is that one of the QPOs (quasi-periodic oscillations) in each binary X-r
Externí odkaz:
http://arxiv.org/abs/1205.1783