Proposal Details - 0720035
Broad Band Variability of Microquasars: Integral observations of Cygnus X-1 and GRS 1915+105 (Wilms)

Proposal Abstract

Monitoring of microquasars such as GRS 1915+105 and Cygnus X-1 during the previous INTEGRAL AOs has revealed a wealth of new observational information. The monitoring has revealed the dynamical behavior of these sources above 20 keV on all timescales, as opposed to the snapshot observations available before. We propose to continue the monitoring of these canonical black holes with a dedicated Key Programme in INTEGRAL AO7, which will also include the soft X-rays through a strategy that allows the source to remain in the field of view of JEM-X. The proposed investigation will allow to study di erent emission models for the two extreme cases of microquasars with INTEGRAL and simultaneous optical, IR, and radio observations. This proposal is a continuation of our earlier accepted observations that started in AO1.

Observation Strategy (Recommended by TAC)

A total of 1.2 Ms in the HEX mode, split into fixed time monitoring observations as follows: 24*20 ks on GRS 1915+105 (RA, Dec = 288.798, 10.946; l, b = 10.946, -0.219) every second revolution, and 7*100 ks on Cygnus X-1 (RA, Dec = 299.59, 35.202; l, b = 71.335, 3.067) spread over AO7.

Proposal grade: B

Data Rights (Recommended by TAC)

The TAC has allocated the following specific data rights to this proposal: GRS 1915+105 and Cygnus X-1.

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.