A note on the survival of the sungrazing comet C/2011 W3 (Lovejoy) within the Roche limit

Details A note on the survival of the sungrazing comet C/2011 W3 (Lovejoy) within the Roche limit A note on the survival of the sungrazing comet C/2011 W3 (Lovejoy) within the Roche limit

2012-03-08

arxiv.org/abs/1203.1808v1

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

Submitted to Icarus

Scientific paper

In this work, a novel approach to explain the survival of sungrazing comets within the Roche limit is presented. It is shown that the reaction force caused by the sublimation of the icy constituents can prevent tidal splitting of cometary nuclei, even if the tensile strength of the material is low. Furthermore, this approach is used to estimate the maximum size of the nucleus of comet C/2011 W3 (Lovejoy) during perihelion.

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