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Infrared and Submillimeter Diagnostics of Activity and Flares

Published online by Cambridge University Press:  03 August 2017

A. Falchi ,
R. Falciani  and
P. Mauas
A. Falchi
Affiliation:
Osservatorio Astrofisico di Arcetri, Largo Fermi 5, I-50125 Florence, Italy
R. Falciani
Affiliation:
Dipartimento di Astronomia, Universitá di Firenze, Largo Fermi 5, I-50125 Florence, Italy
P. Mauas
Affiliation:
Osservatorio Astrofisico di Arcetri, Largo Fermi 5, I-50125 Florence, Italy

Abstract

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We give a critical review of the observations of solar activity in the IR and sub-mm range, which are quite scarce, except for the Fe I triplet at 1.56 μm and the Mg I emission lines at 12.32 μm. These, however, are mainly intended for solar magnetic field studies rather than physical diagnostics on activity phenomena. We compute the emission in some continuuum windows and in some detectable Paschen and Brackett lines in two extreme flare models, viz. a “chromospheric” and a white-light flare model. The utility of the Paschen and Brackett lines as diagnostics of the atmospheric state is questionable since more information can be obtained more easily by observing the higher Balmer lines. On the other hand, observations in various continuum windows can be of high scientific value and efficiency. We also discuss possible coordination with simultaneous visible observations, in order to increase the diagnostic efficiency of a prospective observing run.

Keywords

infrared: starsSun: activitySun: flares
Type
Part 1: Infrared Diagnostics of the Solar Atmosphere and Solar Activity
Information
Symposium - International Astronomical Union , Volume 154: Infrared Solar Physics , 1994 , pp. 113 - 123
Copyright
Copyright © Kluwer 1994 

References

Albregtsen, F., and Maltby, P.: 1981, Solar Phys. 71, 269.CrossRefGoogle Scholar
Albregtsen, F., Joras, P.B., and Maltby, P.: 1984, Solar Phys. 90, 17.CrossRefGoogle Scholar
Akabane, K., Nakajima, H., Ohki, K., Moriyama, F., and Miyaji, T.: 1973, Solar Phys. 33, 431.Google Scholar
Avrett, E.H.: 1985, in Lites, B.W. (ed.), Chromospheric diagnostics and modelling, NSO Summer Workshop, p. 67.Google Scholar
Avrett, E.H., Machado, M.E., and Kurucz, R.L.: 1986, in Neidig, D.F. (ed.), The lower atmosphere of solar flares, NSO Summer Workshop, p. 216.Google Scholar
Beckman, J.E., and Clark, C.D.: 1973, Solar Phys. 29, 25.Google Scholar
Brault, J., and Noyes, R.: 1983, Astrophys. J. (Letters) 269, L61.CrossRefGoogle Scholar
Byrne, P.B.: 1989, in Solar and Stellar Flares, IAU Colloq. 104, Solar Phys. 121, 61.Google Scholar
Cauzzi, G., Falchi, A., Falciani, R., and Smaldone, L.A.: 1992, in ESA Workshop Solar Physics and Astrophysics at Interferometric Resolution, ESA SP-344 (in press).Google Scholar
Costa, J.E.R., and Kaufmann, P.: 1986, Solar Phys. 104, 253.Google Scholar
Deming, D., Boyle, R.J., Jennings, D.E., and Wiedemann, G.: 1988, Astrophys. J. 333, 978.CrossRefGoogle Scholar
Deming, D., Hewagama, T., Jennings, D.E., Osherovich, V., Wiedemann, G., and Zirin, H.: 1990, Astrophys. J. (Letters) 364, L49.Google Scholar
Falciani, R.: 1988, Adv. Space Res. 8, 11.CrossRefGoogle Scholar
Falchi, A., Falciani, R., and Smaldone, L.A.: 1991, Adv. Space Res. 11, 85 Google Scholar
Falchi, A., Falciani, R., and Smaldone, L.A.: 1992, Astron. Astrophys. 256, 255.Google Scholar
Foukal, P., Little, R., and Mooney, J.: 1989, Astrophys. J. (Letters) 336, L33.CrossRefGoogle Scholar
Foukal, P., Little, R., Graves, J., Rabin, D., and Lynch, D.: 1990, Astrophys. J. 353, 712.Google Scholar
Hudson, H.S.: 1975, Solar Phys. 45, 69.CrossRefGoogle Scholar
Kaufmann, P., Correia, E., Costa, J.E.R., and Zodi Vaz, A.M.: 1986, Astron. Astrophys. 157, 11.Google Scholar
Kundu, M.R., White, S.M., Gopalswamy, N., and Lim, J.: 1992, in 2nd GRO Science Workshop, (in press).Google Scholar
Kurucz, R.L.: 1985, Bull. AAS 17, 640.Google Scholar
Lindsey, C., and Heasley, J.N.: 1981, Astrophys. J. 247, 348.CrossRefGoogle Scholar
Lindsey, C.A., Yee, S., Roellig, T.L., Hills, R., Brock, D., Duncan, W., Watt, G., Webster, A., and Jefferies, J.T.: 1990, Astrophys. J. (Letters) 353, L53.Google Scholar
Lindsey, C.A., and Jefferies, J.T.: 1991, Astrophys. J. 383, 443.CrossRefGoogle Scholar
Livingston, W.: 1991, in November, L.J. (ed.), Solar Polarimetry, 11th NSO Summer Workshop, p. 356.Google Scholar
Machado, M.E., Avrett, E.H., Vernazza, J.E., and Noyes, R.W.: 1980, Astrophys. J. 242, 336.Google Scholar
Mauas, P.J.D., Machado, M.E., and Avrett, E.H.: 1990, Astrophys. J. 360, 715.Google Scholar
Maltby, P., Avrett, E.H., Carlsson, M., Kjeldseth-Moe, O., Kurucz, R.L., and Loeser, R.: 1986, Astrophys. J. 306, 284.CrossRefGoogle Scholar
McClements, K.G., and Brown, J.C.: 1986, Astron. Astrophys. 165, 235.Google Scholar
Rabin, D., Jaksha, D., Plymate, C., and Wagner, J.: 1991, in November, L.J. (ed.), Solar Polarimetry, 11th NSO Summer Worshop, p. 361.Google Scholar
Shimabukuro, F.I.: 1970, Solar Phys. 15, 424.CrossRefGoogle Scholar
Shimabukuro, F.I.: 1972, Solar Phys. 23, 169.Google Scholar
Turon, P.J., and Lena, P.J.: 1970, Solar Phys. 14, 112.CrossRefGoogle Scholar
Van Ballegooijen, A.A.: 1984, Solar Phys. 91, 195.Google Scholar
Vernazza, J.E., Avrett, E.H., and Loeser, R.: 1973, Astrophys. J. 184, 605.CrossRefGoogle Scholar
Vernazza, J.E., Avrett, E.H., and Loeser, R.: 1981, Astrophys. J. Suppl. 45, 635.Google Scholar
Worden, S.P.: 1975, Solar Phys. 45, 521.Google Scholar
Zirin, H., and Popp, B.: 1990, Astrophys. J. 340, 571.Google Scholar
Zirker, J.B.: 1985, Solar Phys. 102, 33.Google Scholar