We have made timing observations of binary pulsar PSR B1534+12 with radio telescopes at Arecibo, Green Bank, and Jodrell Bank. By combining our new observations with data collected up to seven years earlier, we obtain a significantly improved solution for the astrometric, spin, and orbital parameters of the system. For the first time in any binary pulsar system, no fewer than five relativistic ...

purpose: to determine the normal values of bony inter- and intra-orbital distances in an iranian adult population by orbital ct scan. methods: the study was conducted on all adults who were referred to farabi eye hospital from march 2003 to june 2005 for ct scan ordered for complaints unrelated to craniofacial or orbital abnormalities. patients were excluded in the presence of any pathology of ...

The dynamical characterization of the Millisecond Pulsar (MSP) parameters is a key issue in understanding these systems. We present an analytical analysis orbital binary MSPs with long periods (Porb > 2 d) and circular (e < 0.1) orbits, produced by asymmetric kick model imparted during Accretion Induced Collapse (AIC) white dwarfs process. It turns out that distribution orbits peaks up to P_orb...

We have obtained measurements of the scintillation parameters of the relativistic binary PSR J1141−6545 over a period of two years. The longterm aims of this experiment are: a measurement of the advance of periastron, a detection of the motion of the Earth, and an estimation of the binary orientation in the plane of the sky. We present data from several epochs throughout this two-year period an...

We consider conditions of structural stability under which the array of singular beams preserves its topological structure and intensity distribution while slightly perturbing its intrinsic parameters. The orbital angular momentum of the array as a function of the array parameters is a characteristic function, and its extreme points correspond to stable and unstable array states.

We have made timing observations of binary pulsar PSR B1534+12 with radio telescopes at Arecibo, Green Bank, and Jodrell Bank. By combining our new observations with data collected up to seven years earlier, we obtain a signiicantly improved solution for the astrometric, spin, and orbital parameters of the system. For the rst time in any binary pulsar system, no fewer than ve relativistic or \p...