Phase Dependent Spectral Variability of 4U1907+09 (2001)
Roberts, Mallory S. E., Michelson, Peter F., Leahy, Denis A., Hall, Tony A., Finley, John P., Cominsky, Lynn R., ...
We report on ASCA, RXTE, and archival observations of the high mass X-ray binary pulsar 4U1907+09. Spectral measurements of the absorption and flux were made at all phases of the X-ray pulsar orbit,...