Formation of Twisted Elephant Trunks in the Rosette Nebula
2002 (English)In: Astrophysics and Space Science, ISSN 0004-640X, E-ISSN 1572-946X, Vol. 280, no 4, 405-412 p.Article in journal (Refereed) Published
New observations show that dark elephant trunks in the Rosette nebula are often built up by thin filaments. In several of the trunks the filaments seem to form a twisted pattern. This pattern is hard to reconcile with current theory. We propose a new model for the formation of twisted elephant trunks in which electromagnetic forces play an important role. The model considers the behaviour of a twisted magnetic filament in a molecular cloud, where a cluster of hot stars has been recently born. As a result of stellar winds, and radiation pressure, electromagnetic forces, and inertia forces part of the filament can develop into a double helix pointing towards the stars. The double helix represents the twisted elephant trunk. A simple analogy experiment visualizes and supports the trunk model.
Place, publisher, year, edition, pages
2002. Vol. 280, no 4, 405-412 p.
Astronomy, Astrophysics and Cosmology
IdentifiersURN: urn:nbn:se:kth:diva-94989DOI: 10.1023/A:1015602423235ISI: 000175807100008ScopusID: 2-s2.0-0038421101OAI: oai:DiVA.org:kth-94989DiVA: diva2:526447
QC 201206182012-05-112012-05-112013-12-04Bibliographically approved