Decay rates of sunspot groups from 1874 to 1976

Bibcode
1990Ap&SS.170....3P
DOI
10.1007/BF00652636
Martinez Pillet, V.; Moreno-Insertis, F.; Vázquez, M.
Referencia bibliográfica

Astrophysics and Space Science, Volume 170, Issue 1-2, pp. 3-7

Fecha de publicación:
8
1990
Revista
Astrophysics and Space Science
Número de autores
3
Número de autores del IAC
0
Número de citas
0
Número de citas referidas
0
Descripción
The global behaviour and fine structure of the distribution of sunspot decay rates from activity cycle 13 to 20 are presented. It is shown that the distribution of this parameter is lognormal. Statistically significantly lower values of decay rates are found in cycles 13, 14, and 18 for isolated spots. The complex groups had no appreciable changes.
Tipo
Sin árbitro

Te puede interesar

  • Sin árbitro
    The Gravitational-wave Optical Transient Observer (GOTO)
    The Gravitational-wave Optical Transient Observer (GOTO) is a project dedicated to identifying optical counterparts to gravitational-wave detections using a network of dedicated, wide-field telescopes. After almost a decade of design, construction, and commissioning work, the GOTO network is now fully operational with two antipodal sites: La Palma
    Dyer, Martin J. et al.

    Fecha de publicación:

    8
    2024
    Bibcode
    2024SPIE13094E..1XD
    Número de citas
    1
  • Sin árbitro
    Innovative solution for upgrading commercial bearings for use in cryogenic instruments
    Infrared instruments for astronomy require many bearings for motion that must move in cryogenic conditions. There are poor and expensive options for this, and the companies with qualified bearings only supply after a long time. To attend these constrains, the Instituto de Astrofísica de Canarias (IAC) started to develop a procedure to upgrade
    Luján, Alejandro et al.

    Fecha de publicación:

    8
    2024
    Bibcode
    2024SPIE13100E..73L
    Número de citas
    0
  • Sin árbitro
    NIRPS first light and early science: breaking the 1 m/s RV precision barrier at infrared wavelengths
    The Near-InfraRed Planet Searcher or NIRPS is a precision radial velocity spectrograph developed through collaborative efforts among laboratories in Switzerland, Canada, Brazil, France, Portugal and Spain. NIRPS extends to the 0.98-1.8 μm domain of the pioneering HARPS instrument at the La Silla 3.6-m telescope in Chile and it has achieved
    Artigau, Étienne et al.

    Fecha de publicación:

    7
    2024
    Bibcode
    2024SPIE13096E..0CA
    Número de citas
    0