Active processes in cometary nucleus and new meteoroid swarms

Ibadinov, Kh. I.; Buriev, A. M.; Safarov, A. G.; Rahmonov, A. A.

doi:10.1016/j.asr.2015.03.033

“…In [20] space observations confirmed that some cometary nuclei show signs of partial coverage by a refractory crust. In addition, some of these comets are considered active ones [14][15][16][17]26], because the flare activity of comets located in the plane of the ecliptic can be caused by a collision with meteoroid swarms. This phenomenon may be the reason in the cases where our analysis does not reveal the strong dependence between some comets' activity and solar activity.…”

Section: Discussionmentioning

confidence: 99%

Determination of the correlation coefficient of selected short-periodic comets of the Jupiter family and solar activity

Safarov¹,

Ayubov²

2022

Adv.Astron.Spa.Physics

0

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The paper presents the study of the dependence between photometric parameters of selected short-period comets of the Jupiter family and the activity of the Sun. As a quantity of solar activity, we used the sunspot area, the Wolf number, the annual mean solar radio flux, the solar flare index (full disk), and the annual mean AA-index solar activity. To study the correlation between cometary and solar activity the Dobrovolsky method was used. It has been found no direct correlation between the absolute stellar magnitude and the photometric parameter of comets with individual parameters of solar activity. Moreover, the correlation coefficients show that some comets are not associated with solar activity.

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“…In [20] space observations confirmed that some cometary nuclei show signs of partial coverage by a refractory crust. In addition, some of these comets are considered active ones [14][15][16][17]26], because the flare activity of comets located in the plane of the ecliptic can be caused by a collision with meteoroid swarms. This phenomenon may be the reason in the cases where our analysis does not reveal the strong dependence between some comets' activity and solar activity.…”

Section: Discussionmentioning

confidence: 99%

Untitled

2022

Adv.Astron.Spa.Physics

0

View full text Add to dashboard Cite

The paper presents the study of the dependence between photometric parameters of selected short-period comets of the Jupiter family and the activity of the Sun. As a quantity of solar activity, we used the sunspot area, the Wolf number, the annual mean solar radio flux, the solar flare index (full disk), and the annual mean AA-index solar activity. To study the correlation between cometary and solar activity the Dobrovolsky method was used. It has been found no direct correlation between the absolute stellar magnitude and the photometric parameter of comets with individual parameters of solar activity. Moreover, the correlation coefficients show that some comets are not associated with solar activity.

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“…We have studied the dependence of anomalous cometary tails on some parameters of their orbit, in particular, on the heliocentric distance r and on the geocentric distance of comet ρ, on the perihelion distance of the orbit q, on the inclination of the comet's orbit plane to the ecliptic plane i and on (rq). Some results are presented in Figure 3-6 (Safarov 2018; Ibadinov et al 2012).…”

Section: Statistical Studies Of Anomalous Tail Of Cometsmentioning

confidence: 99%

Conditions for the formation of anomalous tail of comet

Safarov¹,

Ibadinov²

2019

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The time and velocity of ejection of dust particles of anomalous tails from cometary nuclei are determined. It is revealed that some comets cause the formation of an anomalous tail is the collision of their comet nucleus with other bodies of the Solar System. An investigation of the formation conditions of the anomalous tail shows that the dust ejection velocity from the comet nucleus C/1851 U1, C/1885 X2, C/1921 E1, C/1925 V1, C/1930 D1, C/1975 V2, 2P/1924, 6P/1950 and 1976, 10P/1930, 7P/1933 and 35P/1939 O1 can be explained by the sublimation of the ice of the nucleus and the removal of dust by molecules. It was found that the comets C/1823 Y1, C/1882 R1, C/1883 D1, C/1888 R1, C/1892 E1, D/1894 F1, C/1932 M1, C/1954 O1, C/1968 H1, C/1969 T1, C/1973 E1, C/1995 O1, C/1999 S4, C/2004 Q2, 7P/1869 G1, 10P/1930, 19P/1918, 26P/1927 F1, 67P/1982, 73P/1930 J1, 96P/1986 J1 and 109P/1862 O1, formation of the anomalous tail and splitting of the comet nucleus was observed in one appearance. Nuclear splitting 70% of these comets occurred as a result of a collision of the comet’s nucleus with a meteoroid or fragments of their nuclei.

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Active processes in cometary nucleus and new meteoroid swarms

Cited by 4 publications

References 2 publications

Determination of the correlation coefficient of selected short-periodic comets of the Jupiter family and solar activity

Determination of the correlation coefficient of selected short-periodic comets of the Jupiter family and solar activity

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Conditions for the formation of anomalous tail of comet

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