The visible helium spectrum of a white-light flare

Bibcode
1986lasf.conf..101L
Lites, B. W.; Meidig, D. F.; Trujillo Bueno, J.
Bibliographical reference

IN: The lower atmosphere of solar flares; Proceedings of the Solar Maximum Mission Symposium, Sunspot, NM, Aug. 20-24, 1985 (A87-26201 10-92). Sunspot, NM, National Solar Observatory, 1986, p. 101-116.

Advertised on:
0
1986
Number of authors
3
IAC number of authors
0
Citations
0
Refereed citations
0
Description
The intensities obtained by measurement of the emission lines of neutral and ionized He at visible wavelengths in the April 24, 1981 white light flare are used as an observational basis for future radiative transfer models of such flares. Absolute peak and integrated intensities are given for the 14 lines of He I, as well as for the He II line at 4686 A. A comparison of these white light emitting region lines with intensities measured in a flare kernel that does not show significant continuum emission indicates that the white light emission arises from material at chromospheric temperatures, and not from temperatures greater than 20,000 K.
Type
Non-refereed
Solar flares

It may interest you

  • Non-refereed
    Workshop summary: Kaons@CERN 2023

    Kaon physics is at a turning point - while the rare-kaon experiments NA62 and KOTO are in full swing, the end of their lifetime is approaching and the future experimental landscape needs to be defined. With HIKE, KOTO-II and LHCb-Phase-II on the table and under scrutiny, it is a very good moment in time to take stock and contemplate about the

    Anzivino, G. et al.

    Advertised on:

    4
    2024
    Bibcode
    2024EPJC...84..377A
    Citations
    0
  • Non-refereed
    3.5 years of observing exoplanet day sides with CHEOPS

    Characterising Exoplanets Satellite (CHEOPS) is the first ESA exoplanet space mission. The satellite carries a 30cm telescope, optimised to deliver exquisite (ppm-level) photometry of bright exoplanetary systems at optical wavelengths. CHEOPS has spent approximately 20% of its observing time during its 3.5-year long nominal mission studying

    Lendl, Monika et al.

    Advertised on:

    4
    2024
    Bibcode
    2024ESS.....510204L
    Citations
    0
  • Non-refereed
    Finding Water Worlds with Transit Timing Variations

    Models predict that planets with water-rich compositions may be common around low-mass stars, but definitive evidence for the existence of water worlds has remained elusive. Precise mass and radius measurements for small planets allow us to identify candidate water worlds that have bulk densities too low to be consistent with a rocky composition

    Greklek-McKeon, Michael et al.

    Advertised on:

    4
    2024
    Bibcode
    2024ESS.....560502G
    Citations
    0
Go back