AAS 207th Meeting, 8-12 January 2006
Session 14 Highlights and Discoveries from INTEGRAL
Poster, Monday, 9:20am-7:00pm, January 9, 2006, Exhibit Hall

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[14.03] A Comprehensive Search for Unpredicted Gamma-ray Lines with INTEGRAL/SPI

K. Watanabe (NASA/GSFC/UMD), B.J. Teegarden (NASA/GSFC)

ESA's INTEGRAL mission was launched in October, 2002. The on-board Spectrometer SPI is the most sensitive high resolution gamma-ray spectrometer thus far flown in space. We have undertaken a global search of the first year of the SPI data for unpredicted gamma-ray lines. We utilize the SPIROS software to obtain individual spectra from point sources on the Bright Source Catalog available at http://lheawww.gsfc.nasa.gov/users/beckmann/INTEGRAL_bright_sources.html. We also search for lines from diffuse emission using the light bucket method with careful background subtraction. We find no new significant astrophysical lines. Our upper limits vary between a few X 10-5cm-2s-1 and a few X 10-3cm-2s-1 depending on line energy, width and exposure.

The author(s) of this abstract have provided an email address for comments about the abstract: watanabe@lheapop.gsfc.nasa.gov

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