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  • Xk81jp769?file=thumbnail
    Conference paper or proceedings
    Lyra, Wladimir
    Large scale anticyclonic vortices concentrate solid material in disks and may thus behave as a route for fast planet formation. The debate over their 3D stability in recent years has lead to the conclusion that they are stable to 3D perturbations prov . . .
  • Pn89db138?file=thumbnail
    Article
    Oishi, Jeffrey S.
    Radial magnetic fields that resist orbital shear can explain the outwards angular momentum transport required for accretion in non-self-gravitating disks. This generates azimuthal magnetic fields and thus Maxwell stresses that transfer angular momentu . . .
  • 9c67wr31p?file=thumbnail
    Article
    Jing, Ju
    Filament eruptions and hard X-ray (HXR) source motions are commonly observed in solar flares, which provide critical information on the coronal magnetic reconnection. This Letter reports an event on 2005 January 15, in which we found an asymmetric fil . . .
  • 5m60qw36d?file=thumbnail
    Article
    Cadavid, Ana Cristina
    Many studies have pointed out fractal and multifractal properties of photospheric magnetic fields, but placing the various approaches into context has proved difficult. Although fractal quantities are defined mathematically in the asymptotic limit of . . .
  • Work
    Article
    Cadavid, Ana Cristina
    There is a growing literature on dyonic black holes as they appear in string theory. Here we examine the correspondence limit of a dyonic black hole which is not supersymmetric. Assuming the existence of a dyon with non-supersymmetric Kerr-Schild stru . . .
  • 5999n666k?file=thumbnail
    Conference paper or proceedings
    Raettig, Natalie
    Recent years have shown that accretion disks around young stars have extended regions, which are too low ionized to couple to magnetic fields and thus the nature of the underlying turbulence cannot be exclusively magnetic. We also found that disks hav . . .
  • Work
    Book chapter
    Cadavid, Ana Cristina
    The spatial distribution of magnetic fields on the solar surface and the temporal distribution of solar magnetic activity each show the dual properties of intermittence and scaling symmetry. Both distributions therefore define measures amenable to mul . . .
  • K0698b945?file=thumbnail
    Article
    Preminger, Dora
    Analysis of the current solar cycle 23 shows a greater increase in total solar irradiance (TSI) for the early phase of this cycle than expected from measurements of the total magnetic flux and traditional solar activity indices, which indicate that cy . . .
  • 6969z401m?file=thumbnail
    Article
    Cadavid, Ana Cristina
    We analyze a unique 9 hr sequence of near-simultaneous, high-resolution and high-cadence G-band and K-line solar filtergrams, together with magnetograms of lower cadence and resolution. Our focus is on the phenomena surrounding discrete photospheric d . . .
  • 9k41zh751?file=thumbnail
    Article
    Cadavid, Ana Cristina
    We present a multifractal analysis of digital, photoelectric images of line-of-sight magnetic fields in solar active regions and quiet photosphere. We study a positive definite measure related to the Ohmic dissipation of magnetic energy. After calcula . . .