Proposal Details - 0720039
Study of the Large Magellanic Cloud and Supernova 1987A (Grebenev)

Proposal Abstract

We propose a deep 3.0 Msec exposure of the Large Magellanic Cloud in order to finally detect the flux from SN 1987A in the direct-escape lines of radioactive $^{44}$Ti (lines at 67.9, 78.4 and 511 keV), to study the possible hard X-ray emission produced by cosmic-rays accelerated in the ejecta blast wave interacting with the ``inner equatorial ring'' of circumstellar material of SNR 1987A, to search for hard emission from the stellar remnant of this supernova (or significantly improve the existing upper limit). In addition, we will try to detect electron-positron annihilation line from the dark bulge of the LMC (testing the hipotesis that it can be produced in the LMC and in the Galactic center by dark matter annihilation). We will also investigate a number of compact X-ray sources present in the field and search for new X-ray sources and transients. Observation of the LMC make the best use of the unique INTEGRAL capabilities and undoubtedly are the most efficient investment of its precious observing time. Should this proposal be accepted, the data will be made available during the proprietary period to scientists of major astrophysical institutions of Russia.

Observation Strategy (Recommended by TAC)

2 Ms in the standard 5x5 dithering mode centred on RA, Dec = 83.867 -69.27 (l, b = 279.703, -31.937).

Proposal grade: C

Data Rights (Recommended by TAC)

The TAC has allocated the following specific data rights to this proposal: 44Ti decay lines at 67.9 and 78.4 keV, and positron/electron annihilation (511 keV) lineas well as ortho-positronium continuum emission. In addition, the PIs of the observation have data rights on the following individual sources: LMC Central Bulge, SN 1987A, SNR N103B, SNR 0509-67.5 and SNR 0519-69.01

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.