Chandra HETG View of an ULX Associated with an SNR in Holmberg II

Details Chandra HETG View of an ULX Associated with an SNR in Holmberg II Chandra HETG View of an ULX Associated with an SNR in Holmberg II

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004cxo..prop.1823d&link_type=abstract

Chandra Proposal ID #06620848

Physics

Chandra Proposal Id #06620848

Scientific paper

We propose to obtain a 100ks Chandra HETG spectrum of a bright and unique ultra-luminous X-ray source Holmberg II X-1, which has shown evidences for X-ray emission lines in the ASCA, Chandra, and XMM-Newton CCD data, suggestive of its association with a supernova remnant. Holmberg II X-1 is well known for its long term X-ray variability, unusual high/hard - low/soft X-ray spectral variations, and optical emission line nabulae. The main objective is to confirm the presence of X-ray emission lines with the HETG, and investigate its association with a supernova/hypernova remnant decisively. The 100ks long observation will also enable us to search for spectral variations, QPOs and break in the power density spectrum, which will help determining the mass of the black hole.

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