Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aps..apr.w3002b&link_type=abstract
American Physical Society, April Meeting, 2004, May 1-4, 2004, Denver, Colorado April 2004, MEETING ID: APR04, abstract #W3.002
Astronomy and Astrophysics
Astrophysics
Scientific paper
A multi-institutional, multi-faceted laboratory astrophysics program is being carried out at the Livermore electron beam ion trap facility using various unique capabilities, such as a Maxwellian plasma simulator, an assortment of crystal and grating spectrometers, including a 45 m grazing incidence spectrometer, and a 6x6 microcalorimeter array from the ASTRO-E mission. Our measurements aim to address specific issues associated with recent X-ray observations. In particular, we are conducting complete spectral surveys to identify and catalog unknown emission lines from L-shell ions that fall into the 20--100 Å region. We are also measuring the stationary wavelengths of K-shell absorption lines needed for determining the flows of absorbers surrounding AGNs. Our measurements calibrate diagnostic line ratios, including those of in Fe XVII, and have discovered the first X-ray diagnostic for magnetic field strength. We have also successfully simulated the X-ray emission of comets C/Linear 1999 S4 and C/McNaught-Hartley 1999 T1. An overview of recent results will be given, including recent measurements obtained with the X-ray microcalorimeter from the upcoming ASTRO-E2 mission. This work was supported by NASA SARA and Planetary Atmospheres programs and performed under the auspices of the DOE by UC-LLNL under Contract W-7405-Eng-48.
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