Journal
SOLAR PHYSICS
Volume 294, Issue 2, Pages -Publisher
SPRINGER
DOI: 10.1007/s11207-019-1395-9
Keywords
Granulation; Oscillations; Solar; Waves; Acoustic
Categories
Funding
- National Science Foundation [1616538]
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1616538] Funding Source: National Science Foundation
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Observations of the solar photosphere show spatially compact large-amplitude Doppler velocity events with short lifetimes. In data from the Imaging Magnetograph eXperiment (IMaX) on the first flight of the Sunrise balloon in 2009, events with velocities in excess of 4 sigma from the mean can be identified in both intergranular downflow lanes and granular upflows. We show that the statistics of such events are consistent with the random superposition of strong convective flows and p-mode coherence patches. Such coincident superposition complicates the identification of acoustic wave sources in the solar photosphere, and may be important in the interpretation of spectral line profiles formed in solar photosphere.
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