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Formation of Twisted Elephant Trunks in the Rosette Nebula
KTH, Superseded Departments, Alfvén Laboratory.
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
Abstract [en]

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.
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:kth:diva-94989DOI: 10.1023/A:1015602423235ISI: 000175807100008ScopusID: 2-s2.0-0038421101OAI: diva2:526447

QC 20120618

Available from: 2012-05-11 Created: 2012-05-11 Last updated: 2013-12-04Bibliographically approved

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