Monitoring the X-ray emission of V1118 Ori during its outburst

Details Monitoring the X-ray emission of V1118 Ori during its outburst Monitoring the X-ray emission of V1118 Ori during its outburst

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005cxo..prop.1888a&link_type=abstract

Chandra Proposal ID #07200317

Physics

Chandra Proposal Id #07200317

Scientific paper

We propose to use Chandra to monitor the young EXor star V1118 Ori which underwent an optical outburst in Jan. 2005 due to a dramatic increase in its accretion rate. The Chandra observations in 2006 will supplement our X-ray monitoring now underway in the early stage of the outburst. We have secured frequent optical/near-IR coverage as well. Our first Chandra and XMM-Newton observations have already provided exciting results. The X-ray spectrum of V1118 Ori softened after the outburst, but this spectral change may have lagged the optical brightening by a few weeks. The softening of the X-ray spectrum may reflect changes in the magnetic structure near the star as a result of the increased accretion load.

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