The radial velocity of the sun as a star and the solar cycle

Bibcode
1986AdSpR...6...89J
DOI
10.1016/0273-1177(86)90415-1
Jimenez, A.; Palle, P. L.; Regulo, C.; Roca-Cortés, T.; Isaak, G. R.
Bibliographical reference

(COSPAR and IAU, Plenary Meeting, 26th, Symposium on Solar and Stellar Activity, 11th, Toulouse, France, June 30-July 11, 1986) Advances in Space Research (ISSN 0273-1177), vol. 6, no. 8, 1986, p. 89-92. SERC-CAICYT-supported research.

Advertised on:
0
1986
Number of authors
5
IAC number of authors
1
Citations
0
Refereed citations
0
Description
Radial velocity measurements of the sun as a star using a resonant scattering spectrometer have been obtained at Izaña (Tenerife) during long observing seasons from 1976 to 1985. Its analysis shows that except for the global oscillations with periods shorter than one day there are stable signals with longer periods: at ≡13 days with mean amplitude of ≡3 m/s (it changes with the solar cycle) and another one of ≡15 m/s amplitude which shows a temporal variation of various years related to the solar cycle. The first signal has a partial explanation as an effect produced by the passage of active regions through the visible surface of the sun but it does not completely explain the observed signal. The second one, related to the limb shift, is probably due to changes in the convection zone in connection with the solar cycle.
Type
Refereed
Radial velocity
Solar rotation
Stellar rotation
Solar oscillations

It may interest you

  • Refereed
    An ultra-short-period super-Earth with an extremely high density and an outer companion
    We present the discovery and characterization of a new multi-planetary system around the Sun-like star K2-360 (EPIC 201595106). K2-360 was first identified in K2 photometry as the host of an ultra-short-period (USP) planet candidate with a period of 0.88 d. We obtained follow-up transit photometry, confirming the star as the host of the signal
    Livingston, John H. et al.

    Advertised on:

    11
    2024
    Bibcode
    2024NatSR..1427219L
    Citations
    0
  • Refereed
    Dehydrogenation, polymerization and self-assembly in the inhibition of copper surfaces by an ultrathin imidazole film
    Here we present a joint experimental-theoretical study on the deposition of imidazole molecules on a Cu(100) surface. X-ray photoelectron spectroscopy (XPS) and Surface-enhanced Raman spectroscopy (SERS) have been carried out on samples prepared upon deposition of sublimated imidazole molecules in ultra-high vacuum (UHV). Computational studies
    Barzaga, R. et al.

    Advertised on:

    7
    2024
    Bibcode
    2024Corro.23512168B
    Citations
    0
  • Refereed
    Constraints on VHE gamma-ray emission of flat spectrum radio quasars with the MAGIC telescopes
    Flat spectrum radio quasars (FSRQs) constitute a class of jetted active galaxies characterized by a very luminous accretion disc, prominent and rapidly moving line-emitting cloud structures (broad-line region, BLR), and a surrounding dense dust structure known as dusty torus. The intense radiation field of the accretion disc strongly determines the
    Abe, S. et al.

    Advertised on:

    12
    2024
    Bibcode
    2024MNRAS.535.1484A
    Citations
    0