Have stellar and supernovae radiations altered the pristine nature of comets?

Details Have stellar and supernovae radiations altered the pristine nature of comets? Have stellar and supernovae radiations altered the pristine nature of comets?

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990em%26p...49..239y&link_type=abstract

Earth, Moon, and Planets (ISSN 0167-9295), vol. 49, June 1990, p. 239-245.

Computer Science

Comet Nuclei, Radiation Effects, Stellar Radiation, Supernovae, Halley'S Comet, Oort Cloud, Radiation Dosage

Scientific paper

Effect of stellar and supernova radiations on cometary nuclei in the Oort cloud is investigated. Radiation dose received by a comet is calculated and compared with the one which Halley's comet receives by one perihelion passage. Stellar radiation provides 10 to 50 percent of Halley unit over 4 billion years. Inclusion of sublimation of volatile molecules such as CO or N2 does not allow the temperature to rise to 30 K by irradiation of bright OB stars, contrary to the claim of Stern and Shull. A chance encounter with an SN provides radiation dose which is just sufficient to raise to 30 K the surface layer which is 1 m thick on the assumption that the radiation is wholly communicated to the interior. Thus, the comets remain pristine under the effect of stellar and SN radiations.

Affiliated with

Also associated with

No associations

Rating

Have stellar and supernovae radiations altered the pristine nature of comets? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Have stellar and supernovae radiations altered the pristine nature of comets?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Have stellar and supernovae radiations altered the pristine nature of comets? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-985354