Gamma-Ray Bursts and X-Ray Melting of Material as a Potential Source of Chondrules and Planets

Details Gamma-Ray Bursts and X-Ray Melting of Material as a Potential Source of Chondrules and Planets Gamma-Ray Bursts and X-Ray Melting of Material as a Potential Source of Chondrules and Planets

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.552..623d&link_type=abstract

Proceedings of the 5th INTEGRAL Workshop on the INTEGRAL Universe (ESA SP-552). 16-20 February 2004, Munich, Germany. Scientific

Astronomy and Astrophysics

Astrophysics

Scientific paper

The intense radiation from a gamma-ray burst (GRB) is shown to be capable of melting stony material at dis- tances up to 300 light years which subsequently cool to form chondrules. These conditions were created in the laboratory for the first time when millimeter sized pel- lets were placed in a vacuum chamber in the white syn- chrotron beam at the European Synchrotron Radiation Facility (ESRF). The pellets were rapidly heated in the X- ray and gamma-ray furnace to above 1400 ° C melted and cooled. This process heats from the inside unlike normal furnaces. The melted spherical samples were examined with a range of techniques and found to have microstruc- tural properties similar to the chondrules that come from meteorites. This experiment demonstrates that GRBs can melt precursor material to form chondrules that may sub- sequently influence the formation of planets. This work extends the field of laboratory astrophysics to include high power synchrotron sources. Key words: Gamma ray bursts, chondrules, planetary formation, laboratory astrophysics, X-ray melting, Syn- chrotron radiation.

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