1 Department of Microbiology, Technical University of Denmark2 Astrophysics, National Space Institute, Technical University of Denmark3 National Space Institute, Technical University of Denmark4 unknown
We present the result of multi-wavelength observations of the microquasar GRS 1915 + 105 in a plateau state with a luminosity of similar to7.5 x 10(38) erg s(-1) (similar to40% L-Edd), conducted simultaneously with the INTEGRAL and RXTE satellites, the ESOstarstar/NTT, the Ryle Telescope, the NRAO(starstarstar) VLA and VLBA, in 2003 April 2-3. For the first time were observed concurrently in GRS 1915 + 105 all of the following properties: a strong steady optically thick radio emission corresponding to a powerful compact jet resolved with the VLBA, bright near-IR emission, a strong QPO at 2.5 Hz in the X-rays and a power law dominated spectrum without any cutoff in the 3-400 keV range.
Astronomy and Astrophysics, 2003, Vol 409, Issue 3
stars : individual : GRS 1915+105; gamma rays : observations; ISM : jets and outflows; X-rays : binaries