High Resolution Spectroscopy of the Accretion Disk Corona Source 4u 1822-37

Details High Resolution Spectroscopy of the Accretion Disk Corona Source 4u 1822-37 High Resolution Spectroscopy of the Accretion Disk Corona Source 4u 1822-37

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cxo..prop...80k&link_type=abstract

Chandra Proposal ID #01400227

Computer Science

Chandra Proposal Id #01400227

Scientific paper

We propose to observe 4U 1822-37 with the ACIS-S-HETG. 4U 1822-37 is the only observable accretion disk corona source in the original class of these objects. Past observations have only detected a few low equivalent width lines rather than the dense line emission expected from models of ADCs. Attempts to fit these data have been unsuccessful leaving unanswered many questions regarding the nature of the compact and companion stars and the mechanism of mass transfer and coronal formation. With the high resolution of the HETG gratings we will be able to finally resolve any existing line structure and use these diagnostics to constrain models of this peculiar form of LMXB.

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