Yan S.-P.,Chinese Academy of Sciences |
Yan S.-P.,University of Chinese Academy of Sciences |
Yan S.-P.,Opening Laboratory of Cosmic Ray and High Energy Astrophysics |
Qu J.-L.,Chinese Academy of Sciences |
And 12 more authors.
Astrophysics and Space Science | Year: 2012
Systematically studying all the RXTE/PCA observations for GRS 1915+105 before November 2010, we have discovered three additional patterns in the relation between Quasi-Periodic Oscillation (QPO) frequency and photon energy, extending earlier outcomes reported by Qu et al. (Astrophys. J. 710:836, 2010). We have confirmed that as QPO frequency increases, the relation evolves from the negative correlation to positive one. The newly discovered patterns provide new constraints on the QPO models. © 2011 Springer Science+Business Media B.V.