Proposal Details - 1020016
INTEGRAL study of jet nutation of SS433: looking into the supercritical disk funnel (Cherepashchuk)

Proposal Abstract

We propose fixed-time observations of the galactic microquasar SS433during two consecutive INTEGRAL orbits (240 ks + 240 ks) around the orbital hard X-ray eclipse at the disk precessional phase$\Psi\approx 0.2$ of the source in March 2013. The main scientific goal of new observations is to investigate hard X-ray flux variations before and after the X-ray eclipse to investigate disk nutation effects, discovered by previousINTEGRAL observations which were carried out at the maximum disk opening angle, at different precession phases of the source. The observations will also be used to search for spectralchanges with precession phase. The results will allow us to put stringent constraints on physical parameters of the funnel of supercritical accretion disk and hot scattering corona discovered by INTEGRAL in SS433, a unique feature of SS433 among other galactic microquasars. The proposal is not associated with any of the AO10 Key Programs.

Observation Strategy (Recommended by TAC)

Total of 440 ks (2 INTEGRAL revolutions) in the standard 5x5 dither pattern centered on RA, Dec (J2000.0, in degrees) = 287.957, 4.983 (l, b = 39.694, -2.245 degrees). SS 433 will be observed at specific times: the observations will be centered around the primary orbital eclipses in two consecutive precessional maxima of SS 433 (in March 2013).

Proposal grade: B

Data Rights (Recommended by TAC)

Data rights were granted on SS 433.

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Exposure Map

The exposure maps are in galactic coordinates using the Aitoff projection and units of seconds, and the colour scale is indicated at the bottom. The green lines provide the 50, 200, 350, 500 and 650 ksec contour.