Also known as "Wolf relative number," "Wolf number." Ye Ruishi nineteenth century astronomer Wolf (johann rudolph wolf ,1816-1893) proposed to indicate the size of a sunspot index. The formula is as follows: r = k (10g + f) Where, r is the sunspot index, g representative of the number of sunspot groups, f is the number of sunspots, k with observation stations, related equipment and a constant observer.
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No. 2
Sunspot relative number, also known as "Wolf relative number," "Wolf number." Ye Ruishi nineteenth century astronomer Wolf (Johann Rudolph Wolf ,1816-1893) proposed to indicate the size of a sunspot index. The formula is as follows: r = k (10g + f) Where, r is the sunspot index, g representative of the number of sunspot groups, f is the number of sunspots, k with observation stations, related equipment and a constant observer. Compiled from Jan-Ove Waldner, "1610-1960 year sunspot activities", can be found 300 years of sunspot activity, including the first sunspot relative number of system data. The current daily sunspot relative number, commissioned by the International Astronomical Union Observatory Zurich summary, published in the publication of the station's "solar Quarterly" on. China measured daily sunspot relative number contained in the Beijing Observatory, published in "The Sun geophysical data". Only that the relative number of sunspots visible solar hemisphere sunspot number. It's the same sunspot group on heliocentric distance, which is projected to reduce effects caused. Solar sunspot number is based on the global development of sunspot groups and the curve estimated using the visibility function on the surface of the sun throughout the day, the sunspot number. Although it is estimated, but the benefit is not subject to day, to geometrical factors, do not show the 27-day cycle. Visibility function is a correction factor empirical distribution of sunspots. With the number of sunspot groups in the sunspots, sunspot groups are classified according to different numbers of sunspots in the calculation. Horizontal visibility map is a function of sunspots on the surface from the center of the heliocentric distance, the vertical axis is the observed average number of sunspot groups. The development of sunspot groups is based on a curve in the Zurich sunspot group classification of a certain type of time to determine. For smaller sunspot groups, because the visibility function is only roughly known, so it's growth curve is often inaccurate; and short-lived sunspot groups in the seven days of its development curve is a reliable part of the visibility function; long-lived sunspot group, observed only intermittently. Development curve of the sunspot group abscissa is time, vertical axis is the number of sunspots for each group. The size of the sunspot area is also characterized by the solar activity conditions. Some people think that sunspot area A [the area of the hemisphere to the sun in units of parts per million] and the sunspot relative number R has the following relationship: A = 16.7 R However, years of observation results, A / R is not a constant, and with the sunspot minimum years of the great years. For example, in the sunspot minimum, A-value decreases rapidly, while the R-value still changes as the number of black children, A / R is correspondingly reduced; great years in the sunspot, A value increases rapidly, but the increase in R slower than A, so A / R also increased accordingly. In addition, the observation conditions are different, A / R are not the same.
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百科 Daquan
heizi xiangduishu Sunspot relative number sunspot relative number That sunspot activity level of an index is Zurich Observatory in 1849, R. Wolf's, which is also called Wolf sunspot number. It is defined as follows: R = K (10 □ + f). Where □ is observed on the surface of the number of sunspot groups; f is the observed total number of individual sunspots; K for the conversion factor, R. Wolf's observation of his own to take K = 1. K value with the observer's observation techniques, methods of observation, the visibility and weather instruments vary. Any observer's observations with his own observations with the same period compared Zurich obtained: K = R □ / (10 □ + f), of which R □ as the Zurich sunspot relative number. Meyer compiled from Wald's "1610 to 1960, sunspot activity", it can be found 300 years of sunspot activity, including the first sunspot relative number of system data. The current daily sunspot relative number, commissioned by the International Astronomical Union Observatory Zurich summary, published in the publication of the station's "solar Quarterly" on. China measured daily sunspot relative number contained in the Beijing Observatory, published in "The Sun geophysical data". Only that the relative number of sunspots visible solar hemisphere sunspot number. It's the same sunspot group on heliocentric distance, which is projected to reduce effects caused. Solar sunspot number is based on the global development of sunspot groups and the curve estimated using the visibility function on the surface of the sun throughout the day, the sunspot number. Although it is estimated, but the benefit is not subject to day, to geometrical factors, do not show the 27-day cycle. Visibility function is a correction factor empirical distribution of sunspots. With the number of sunspot groups in the sunspots, sunspot groups are classified according to different numbers of sunspots in the calculation. Horizontal visibility map is a function of sunspots on the surface from the center of the heliocentric distance, the vertical axis is the observed average number of sunspot groups. The development of sunspot groups is based on a curve in the Zurich sunspot group classification of a certain type of time to determine. For smaller sunspot groups, because the visibility function is only roughly known, so it's growth curve is often inaccurate. The life expectancy is shorter than 7 days sunspot group, and its development curve is a reliable part of the visibility function. Long-lived sunspot group, observed only intermittently. Graph of sunspot groups developing the abscissa is time (days), the vertical axis is the number of sunspots for each group. The size of the sunspot area is also characterized by the solar activity conditions. Some people think that sunspot area A (in millionths of solar hemisphere area units) and the sunspot relative number R has the following relationship: A = 16.7R. But years of observations it seems, A / R is not a constant, with the sunspot minimum years of great years and the. For example, in the sunspot minimum, A-value decreases rapidly, while the R-value still changes as the number of black children, A / R is correspondingly reduced; great years in the sunspot, A value increases rapidly, but the increase in R slower than A, so A / R will also increase accordingly. Observing conditions are different, A / R are not the same. (Zou instrument new Zhao Aidi)
