Proposal Details - 0720014
INTEGRAL searches for change in hard X-ray spectrum during primary eclipse of galactic superaccreting microquasar SS433 (Cherepashchuk)

Proposal Abstract

We propose to conduct two fixed-time observations (237 ks + 150 ks) of the galactic microquasar SS433 covering the egress from the primary orbital eclipse and ingress into the following primary eclipse near the face-on disk precessional phase of the source in November 2010. The main scientific goal is to carry out hard X-ray spectroscopy of the primary eclispe ingress/egress and to study its highly variable form. The phase-resolved spectroscopy will be used to probe the structure and physical parameters of a 20 keV rarefied corona around the center of the supercritical accretion disk in SS433 discoverd in previous INTEGRAL observations. The proposal is not associated with the AO-7 Key Programs.

Observation Strategy (Recommended by TAC)

Total of 370 ks in the standard 5x5 mode centred on RA, Dec = 287.957, 4.983 (l, b = 39.694, -2.245), split in two observations of 220 and 150 ks, respectively. SS 433 will be observed at specific times: the aim is to cover the egress and ingress of its primary orbital eclipse near the face-on disk precessional phase of the source in November 2010.

Proposal grade: A

Data Rights (Recommended by TAC)

The TAC has allocated the following specific data rights to this proposal: SS 433.

Consult the Data Rights policy for more information on Russian Federation proposals.

Exposure Map

The exposure maps are in galactic coordinates and units of ksec, and the colour scale is indicated at the bottom. The green lines provide the 100 ksec contour.