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SPI/INTEGRAL observation of 1809 keV gamma-ray line emission from the Cygnus X region
J. Knödlseder, M. Valsesia, M. Allain +10
We present first results on the observation of 1809 keV gamma-ray line emission from the Cygnus X region with the SPI imaging spectrometer. Our analysis is based on data from the p…
Search for gamma-ray line emission from the radioactive decay of 60Fe with SPI
J. Knodlseder, E. Cisana, R. Diehl +11
The search for gamma-ray line emission from the radioactive decay of 60Fe figures among the prime scientific objectives of the INTEGRAL mission. 60Fe is believed to be primarily pr…
Cygnus OB2 - a young globular cluster in the Milky Way
J. Knodlseder
The morphology and stellar content of the Cygnus OB2 association has been determined using 2MASS infrared observations in the J, H, and K bands. The analysis reveals a spherically…
COMPTEL limits on 26Al 1.809 MeV line emission from gamma^2 Velorum
U. Oberlack, U. Wessolowski, R. Diehl +7
The Wolf-Rayet binary system gamma^2 Vel (WR 11} is the closest known Wolf-Rayet (WR) star. Recently, its distance has been redetermined by parallax measurements with the HIPPARCOS…
Image Reconstruction of COMPTEL 1.8 MeV 26Al Line Data
J. Knodlseder, D. Dixon, K. Bennett +7
We present a new algorithm, called Multiresolution Regularized Expectation Maximization (MREM), for the reconstruction of gamma-ray intensity maps from COMPTEL data. The algorithm…