XMM-Newton Proposal 02006604

Details XMM-Newton Proposal 02006604 XMM-Newton Proposal 02006604

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003xmm..prop...32m&link_type=abstract

XMM-Newton Proposal ID #02006604

Computer Science

Ngc 7674, Ngc 4968, Iras 13218+0552, Ngc 1667, Xmm-Newton Proposal 02006604

Scientific paper

With the aim of discovering more sources which change their appearance from Compton--thin (if Seyfert 2s) or unabsorbed (if Seyfert 1s) to reflection--dominated, we propose to observe, for 10 ks each, four objects which have been proposed to be the optical counterparts of X--ray sources in the Grossan LMA HEAO1 catalog. The four candidate counterparts have been later on observed with imaging X-ray instruments, and found on those occasions to be much fainter. The XMM-Newton observations, if catching the sources at much brighter fluxes than during the previous hard X--ray imaging observations, would confirm their transient nature.

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