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astro-ph1999
Giant Stellar Arcs as the imprint of Precessing Gamma Jets by Gamma-Ray Bursts
Yuri Efremov, Daniele Fargion
Precessing Gamma Jets, originated by Neutron Stars or Black Holes, may blaze to the observer leading to Gamma Bursts (GRBs) and Soft Gamma repeaters (SGRs). The thin gamma jet is b…
astro-ph1999
Gamma Ray Bursts versus OB Associations: do they trigger star formation?
Yu. N. Efremov, S. Ehlerova, J. Palous
We discuss differences in shapes, expansion velocities and fragmentation times of structures created by an energy deposition from a single Gamma Ray Burst (GRB) or an OB associatio…
astro-ph1999
Observations and Theory of Star Cluster Formation
B. G. Elmegreen, Y. N. Efremov, R. E. Pudritz +1
Young stars form on a wide range of scales, producing aggregates and clusters with various degrees of gravitational self-binding. The loose aggregates have a hierarchical structure…