Published January 20, 2014 | Version v1
Journal article

COMPARISON OF PHOTOMETRIC VARIABILITY BEFORE AND AFTER STELLAR FLARES

Creators

  • 1. Department of Geoscience, Aarhus University, Høegh-Guldbergs Gade 2, DK-8000 Aarhus C (Denmark)
  • 2. Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C (Denmark)

Description

The energy in the solar acoustic spectrum is known to be correlated with flares, but it is not known if the same is true for stellar flares. In order to answer this question, we have analyzed 73 flares in 39 solar-like stars. These flares were identified in the 854 solar-like stars observed by the Kepler spacecraft that have stellar parameters measured with asteroseismology. Though we were not able to identify a statistically significant enhancement of the energy in the high-frequency part of the post-flare acoustic spectra compared to the pre-flare spectra of these stars, we did identify a larger variability between the energy in the high-frequency part of the post- and pre-flare acoustic spectra compared to spectra taken at random times

Availability note (English)

Available from http://dx.doi.org/10.1088/2041-8205/781/1/L22

Additional details

Identifiers

Publishing Information

Journal Title
Astrophysical Journal Letters
Journal Volume
781
Journal Issue
1
Journal Page Range
[5 p.]
ISSN
2041-8205

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
46069354
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
COMPARATIVE EVALUATIONS; ELECTRON PLASMA WAVES; EMISSION SPECTRA; ION ACOUSTIC WAVES; OSCILLATIONS; RANDOMNESS; STARS; STELLAR FLARES
Descriptors DEC
EVALUATION; ION WAVES; PLASMA WAVES; SPECTRA; STELLAR ACTIVITY