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16 Result(s)

within M. Landini Remove this filter Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics) Remove this filter

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  1. No Access

    Article

    Loop Models from SOHO Observations

    The Coronal Diagnostic Spectrometer (CDS) on SOHO is a grazing/normal incidence spectrograph, aimed to produce stigmatic spectra of selected regions of the solar surface in six spectral windows of the extreme ...

    M. Landini, A. Brković, E. Landi, I. Rüedi, S. Solanki in Space Science Reviews (1999)

  2. No Access

    Article

    Observation of Transition Region Fine Structures with Soho/Sumer

    We present a preliminary analysis of two quiet Sun transition region areas observed with the SOHO/SUMER spectrometer, using lines from oxygen, nitrogen and silicon. The average quiet Sun physical parameters ar...

    E. Landi, H. E. Mason, M. Landini in Space Science Reviews (1999)

  3. No Access

    Article

    Soho Cds–nis in-flight intensity calibration using a plasma diagnostic method

    The internal intensity calibration of the Coronal Diagnostic Spectrometer (CDS) – Normal Incidence Spectrometer (NIS) is studied using the Arcetri diagnostic method. A large number of spectral lines observed b...

    E. Landi, M. Landini, C. D. Pike, H. E. Mason in Solar Physics (1997)

  4. No Access

    Article

    The Xray-EUV spectrum of optically thin plasmas

    The new observations of the Extreme Ultraviolet Explorer Spectrometers on EUVE and the future high resolution observation by Coronal Diagnostic Spectrometer (CDS) and SUMER on SOHO have suggested the revision ...

    B. C. Monsignori Fossi, M. Landini in Solar Physics (1994)

  5. No Access

    Article

    EXOSAT observations of late-type stars: The application of coronal loop models

    We apply solar-type coronal loop models to X-ray and UV observations of late-type stars. We derive from EXOSAT and IUE observations constraints on the temperature, pressure and size of the emitting structures.

    M. Landini, B. C. Monsignori-Fossi, R. Pallavicini in Space Science Reviews (1985)

  6. No Access

    Article

    The coronal structure of active regions

    A four-parameter model which assumes a Gaussian dependence of both temperature and pressure on distance from center is used to fit the compact part of coronal active regions as observed in X-ray photographs fr...

    M. Landini, B. C. Monsignori Fossi, A. Krieger, G. S. Vaiana in Solar Physics (1975)

  7. No Access

    Article

    Thermal models of flaring region based on observations by the SOLRAD 10 satellite

    A number of solar X-ray bursts, observed with the SOLRAD 10 satellite on 1971 September 14, 17, November 28 and 1972 August 1, have been analysed. From the differential emission measure distribution deduced fr...

    M. Landini, B. C. Monsignori Fossi, R. Pallavicini in Solar Physics (1975)

  8. No Access

    Article

    Non-thermal ionization and recombination processes during solar flares

    Ionization and recombination processes are studied for a plasma of which the electrons follow a power-law energy distribution.

    M. Landini, B. C. Monsignori Fossi, R. Pallavicini in Solar Physics (1973)

  9. No Access

    Article

    Thermal and non-thermal soft X-ray bursts

    X-ray bursts observed for energies lower than 25 keV are usually interpreted as being produced by a thermal plasma with several million degrees of temperature.

    M. Landini, B. C. Monsignori Fossi, R. Pallavicini in Solar Physics (1972)

  10. No Access

    Article

    Ionization equilibrium for ions of Na, Al, P, Cl, A, K, Ca, Cr and Mn

    M. Landini, B. C. Monsignori Fossi in Space Science Reviews (1972)

  11. No Access

    Article

    Thermal and non-thermal soft X-ray bursts

    M. Landini, B. C. Monsignori Fossi, R. Pallavicini in Space Science Reviews (1972)

  12. No Access

    Article

    A simple formula for the total dielectronic recombination coefficient

    Two simple relationships for the total dielectronic recombination coefficient are developed. The first is for isoelectronic sequences of H, He, Ne, K-Ni and the second for Li-F, Na-A and Cu-Kr. Comparison with...

    M. Landini, B. C. Monsignori Fossi in Solar Physics (1971)

  13. No Access

    Article

    Soft x-ray emitting regions in the solar corona

    The soft X-ray emission of the solar corona is investigated by comparison of the signals of several broad band photometers carried on the Solrad 9 satellite, and sensitive to the region 0.5–20 Å. Temperature f...

    M. Landini, B. C. Monsignori Fossi in Solar Physics (1971)

  14. No Access

    Article

    X-ray fluxes from Solrad 9 satellite

    M. Landini, B. C. Monsignori Fossi, G. Poletto, D. Russo… in Solar Physics (1970)

  15. No Access

    Article

    The 44–60 Å flux during the ascending period of the solar cycle no. 20 (1964–67)

    An attempt is made to separate the ‘true’ 44–60 Å flux from the ‘nominal’ one measured by the Solrad 8 satellite during 1966.

    M. Landini, B. C. Monsignori Fossi, G. Poletto, G. L. Tagliaferri in Solar Physics (1968)

  16. No Access

    Article

    Determination of the solar X-ray spectrum by using the atmospheric extinction

    Indications about the spectral distribution of the solar radiation below 20 Å are obtained by comparing the atmospheric extinction of the solar radiation measured by three ion chambers in the satellites SOLRAD...

    M. Landini in Solar Physics (1967)