Localization of SN 2005kd

Physics

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Chandra Proposal Id #08508265

Scientific paper

We propose to observe the Type IIn (narrow emission line) SN 2005kd. A recent optical spectrum shows it is similar to the extremely X-ray luminous SN 1988Z (in fact, it has a higher eq. width of Halpha than 88Z did at a similar epoch). A recent Swift observation detected emission consistent with the SN at Lx = 1.4e41 erg/s (d=61.5 Mpc). Because the SN is only 5" from the nucleus of its host galaxy, and because there may be ULXs also present in the host, we would like to determine the amount of "contamination" in the Swift emission to the 10% level. In 3ks, we will detect 75 counts from 05kd, and 7 counts from something that's 10% the flux. This will allow a conclusive association of the Swift source with the SN, as well as provide a measure of possible contaminating sources. We also plan on proposing for a deep XMM observation to obtain a high quality spectrum (it will be visible in a few weeks), and in this case as well, a measure of contamination will be invaluable.

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