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Filtering by: Creator Mathioudakis, Mihalis Remove constraint Creator: Mathioudakis, Mihalis Resource type Article Remove constraint Resource type: Article

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  • T722hd33d?file=thumbnail
    Article
    Mathioudakis, Mihalis
    The Rapid Oscillations in the Solar Atmosphere instrument reveals solar atmospheric fluctuations at high frequencies. Spectra of variations of the G-band intensity (IG ) and Ca IIK-line intensity (IK ) show correlated fluctuations above white noise to . . .
  • 2514nq43g?file=thumbnail
    Article
    Antolin, Patrick
    We present observational evidence of compressible MHD wave modes propagating from the solar photosphere through to the base of the transition region in a solar magnetic pore. High cadence images were obtained simultaneously across four wavelength band . . .
  • Q524js434?file=thumbnail
    Article
    Keenan, Francis P.
    The Rapid Oscillations in the Solar Atmosphere (ROSA) instrument is a synchronized, six-camera high-cadence solar imaging instrument developed by Queen's University Belfast. The system is available on the Dunn Solar Telescope at the National Solar Obs . . .
  • 0c483n81x?file=thumbnail
    Article
    Keys, Peter H.
    We use images of high spatial and temporal resolution, obtained with the Rapid Oscillations in the Solar Atmosphere instrument at the Dunn Solar Telescope, to reveal how the generation of transverse waves in Type I spicules is a direct result of longi . . .
  • 3n2042673?file=thumbnail
    Article
    Vennes, Stephane
    We report the detection of a new late-type spectroscopic binary, EUVE J224415.9 (HD 215341) using the 0.6 meter Coude auxiliary telescope and Hamilton echelle spectrograph at Lick observatory.
  • 8336h537w?file=thumbnail
    Article
    Keenan, Francis P.
    Magnetic bright points (MBPs) are among the smallest observable objects on the solar photosphere. A combination of G-band observations and numerical simulations is used to determine their area distribution. An automatic detection algorithm, employing . . .
  • W6634701r?file=thumbnail
    Article
    Mullan, D.J.
    Dynamo activity in stars of different types is expected to generate magnetic fields with different characteristics. As a result, a differential study of the characteristics of magnetic loops in a broad sample of stars may yield information about dynam . . .
  • 6d570075k?file=thumbnail
    Article
    Mathioudakis, Mihalis
    We present observations of a strong flare from EUVE J0613-23.9B, a source serendipitously detected with the EUVE Deep Survey Telescope 2.5' south of HD 43162. Optical spectroscopy revealed EUVE J0613-23.9B to be an active dM3.5e star. A dM4e star was . . .
  • Bg257j673?file=thumbnail
    Article
    Keenan, Francis P.
    High-cadence, multiwavelength observations and simulations are employed for the analysis of solar photospheric magnetic bright points (MBPs) in the quiet Sun. The observations were obtained with the Rapid Oscillations in the Solar Atmosphere (ROSA) im . . .
  • 70795b94d?file=thumbnail
    Article
    Mathioudakis, Mihalis
    We investigate if the super-saturation phenomenon observed at X-ray wavelengths for the corona exists in the chromosphere for rapidly rotating late-type stars. Moderate resolution optical spectra of fast-rotating EUV- and X-ray-selected late-type star . . .