This site will be out of service for maintenance on Monday, May 6 from 7:30 to 8:00.

Photometry of sunspot penumbrae

Bibcode
1988A&A...195..315C
Collados, M.; del Toro Iniesta, J. C.; Vazquez, M.
Bibliographical reference

Astronomy and Astrophysics (ISSN 0004-6361), vol. 195, no. 1-2, April 1988, p. 315-326.

Advertised on:
4
1988
Number of authors
3
IAC number of authors
3
Citations
10
Refereed citations
9
Description
The authors present the results of a statistical analysis of the penumbra of sunspots. The intensity distribution, and several parameters derived from it, is analysed at different heliocentric angles and positions on the spot. It has revealed, on the one hand, that a two-component model is compatible with the observations and that both components lie at the same height, and on the other, that the penumbral asymmetry found by Collados et al. (1987) is confirmed under a photometrical point of view, the western penumbra being slightly shorter than the eastern one.
Type
Refereed
Solar activity
Sunspots
Solar atmosphere
Telescopes

It may interest you

  • Refereed
    Identification of the Top TESS Objects of Interest for Atmospheric Characterization of Transiting Exoplanets with JWST
    JWST has ushered in an era of unprecedented ability to characterize exoplanetary atmospheres. While there are over 5000 confirmed planets, more than 4000 Transiting Exoplanet Survey Satellite (TESS) planet candidates are still unconfirmed and many of the best planets for atmospheric characterization may remain to be identified. We present a sample
    Hord, Benjamin J. et al.

    Advertised on:

    5
    2024
    Bibcode
    2024AJ....167..233H
    Citations
    0
  • Refereed
    High-resolution Spectroscopic Reconnaissance of a Temperate Sub-Neptune
    The study of temperate sub-Neptunes is the new frontier in exoplanetary science. A major development in the past year has been the first detection of carbon-bearing molecules in the atmosphere of a temperate sub-Neptune, K2-18 b, a possible Hycean world, with the James Webb Space Telescope (JWST). The JWST is poised to characterize the atmospheres
    Cabot, Samuel H. C. et al.

    Advertised on:

    5
    2024
    Bibcode
    2024ApJ...966L..10C
    Citations
    0
  • Refereed
    Nonlinear Wave Damping by Kelvin–Helmholtz Instability-induced Turbulence
    Magnetohydrodynamic kink waves naturally form as a consequence of perturbations to a structured medium, for example, transverse oscillations of coronal loops. Linear theory has provided many insights into the evolution of linear oscillations, and results from these models are often applied to infer information about the solar corona from observed
    Hillier, Andrew et al.

    Advertised on:

    5
    2024
    Bibcode
    2024ApJ...966...68H
    Citations
    0