An interpretation of the I-V phase background based on observed plasma jets

Details An interpretation of the I-V phase background based on observed plasma jets An interpretation of the I-V phase background based on observed plasma jets

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002a%26a...395..293m&link_type=abstract

Astronomy and Astrophysics, v.395, p.293-296 (2002)

Astronomy and Astrophysics

Astrophysics

2

Sun: Oscillations, Sun: Flares

Scientific paper

The presence of a solar background in the phase difference between the intensity and velocity (I-V) p-mode oscillation signals recently has been interpreted in terms of downflows due to convection (Skartlien & Rast \cite{Skartlien00}) or due to chromospheric explosive events (Moretti et al. \cite{Moretti01}a). In support of the latter, we present I and V characteristics of impulsive brightenings observed in the NaI D lines, show that these reproduce the frequency dependence of the I-V modulation background, and show that explanations invoking more frequently occurring phenomena such as seismic events are not likely in low-l modulation data.

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