Are the cometary outbursts caused by impacts with interplanetary vagabonds probable?

Gronkowski, P.

doi:10.1002/asna.200310172

Cited by 16 publications

(18 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This one has recently been shown indeed in the paper by Gronkowski (2004a). A short summary of the results obtained in that paper is presented below.…”

Section: Impacts Of Comets With Other Small Bodies Moving In the Solasupporting

confidence: 72%

“…The Deep Impact mission to the Comet 9P/Tempel 1, generally have confirmed many presumptions related to the physics of comets (A'Hearn et al 2005). That is why calculations which were carried out and reviewed in this paper and which are based on the hitherto existing model of a cometary impact with a meteoroid (Gronkowski 2004a), are quite proper to describe the results of such events at least as far as the changes in the cometary brightness are concerned.…”

Section: Remarksmentioning

confidence: 51%

“…The simulated changes of the brightness of the comet were calculated in a similar way as in the papers by Gronkowski & Smela (1998) and Gronkowski (2002Gronkowski ( , 2004aGronkowski ( , 2004b, and for that reason only the formula for ∆m is presented here:…”

Section: The Jump Of the Brightness Of A Cometmentioning

confidence: 99%

See 2 more Smart Citations

The search for a cometary outbursts mechanism: a comparison of various theories

Gronkowski

2007

Astron Nachr

Self Cite

View full text Add to dashboard Cite

In the paper the potential sources of energy of cometary outbursts have been reviewed. Considerations focus on four probable sources of the outbursts' energy. These are the polymerization of hydrogen cyanide HCN, impacts with the meteoroids, destruction of cometary grains in the field of strong solar wind and the transformation of amorphous water ice into the crystalline one. The values of released energy and jumps of cometary brightness caused by these mechanisms have been discussed. A modern approach to the problem of the thermodynamical evolution of the comet nucleus which includes amorphous water ice is considered as the starting point in the discussion presented in the paper. The main characteristics of an outburst of a hypothetical comet belonging to the Jupiter family comet are calculated. The obtained results are in a good agreement with the characteristics observed during the real outbursts of comets. The main conclusion of this paper confirms a general presumption that the cometary outbursts can have different causes. However, the hypothesis concerning the amorphous water ice transformation appears to be the most probable one.

show abstract

“…This one has recently been shown indeed in the paper by Gronkowski (2004a). A short summary of the results obtained in that paper is presented below.…”

Section: Impacts Of Comets With Other Small Bodies Moving In the Solasupporting

confidence: 72%

Section: Remarksmentioning

confidence: 51%

See 1 more Smart Citation

The search for a cometary outbursts mechanism: a comparison of various theories

Gronkowski

2007

Astron Nachr

Self Cite

View full text Add to dashboard Cite

show abstract

“…Therefore the destruction processes connected with three hypothetical comets type 'a', 'b' and 'c' which represent the following groups of comets 'Jupiter family comets', 'Halley type comets' and 'long period comets' respectively are considered. The orbital parameters of these objects are the same as in the papers of Gronkowski (2004aGronkowski ( , 2004b.…”

Section: Introductionmentioning

confidence: 94%

Thermal destruction of cometary materials - application to activity of comets

Gronkowski¹

2005

Astron. Nachr.

Self Cite

View full text Add to dashboard Cite

Abstract. Destruction mechanisms connected with thermodynamical behaviour of cometary material are reviewed with a special consideration of their effects on activity of comets. Consequences of thermal stresses which occur in the interior of a comet are discussed with reference to changes in the cometary brightness. Moreover, thermal destruction of grains placed in the head of the comet as well as on the surface of the nucleus is considered. It has been shown that the destruction of the cometary material can lead to an essential increase in the activity of the comet. Calculations have been carried out for a large assumed range of cometary parameters. The obtained simulated changes in the brightness of comets are consistent with the ones observed during the real variations and outbursts of brightness.

show abstract

“…Several outburst mechanisms have been proposed, including polymerization of HCN (Rettig et al 1992) and meteoroid impacts (Gronkowski 2004). However, the perhaps most reasonable explanation put forward to date is crystallization of amorphous water ice (Smoluchowski 1981;Prialnik & Bar-Nun 1987).…”

Section: The Origin and Nature Of Sw1 Outburstsmentioning

confidence: 99%

Outburst activity in comets

Trigo-Rodríguez

García-Melendo

Davidsson

et al. 2008

A&A

View full text Add to dashboard Cite

Aims. We carried out a continuous monitoring of comet 29P/Schwassmann-Wachmann 1 by using medium aperture telescopes with the aim of studying the activity and outburst mechanisms of this comet on the basis of photometric variations. Methods. We used a standardized method to obtain the coma photometry in the R filter of the Johnson-Kron-Cousins system. Some abrupt changes observed in the brightness of SW1 suggest important variations in surface activity with time.Results. During our 2002−2007 observational campaign we detected 28 outbursts (of 1 mag or larger) in 29P/SchwassmannWachmann 1. A typical outburst is characterized by a rapid increase towards maximum (in a few hours) and a slower decrease toward the quiescent level (in 3−4 days). Given the effective observing time, the average outburst rate is 7.3 events per year. Despite well-sampled data, no signs of a clear periodicity in the outburst occurrence has been found, thus confirming the unpredictability of the activity of this comet.

show abstract

Are the cometary outbursts caused by impacts with interplanetary vagabonds probable?

Cited by 16 publications

References 45 publications

The search for a cometary outbursts mechanism: a comparison of various theories

The search for a cometary outbursts mechanism: a comparison of various theories

Thermal destruction of cometary materials - application to activity of comets

Outburst activity in comets

Contact Info

Product

Resources

About