We have used the integral field spectrograph OSIRIS and laser guide star adaptive optics at Keck Observatory to obtain high angular resolution (0. 06), moderate spectral resolution (R ≃ 3800) images of the bipolar jet from the Herbig Ae star LkHα 233, seen in near-IR [Fe II] emission at 1.600 & 1.644 μm. This jet is narrow and tightly collimated, with an opening angle of only 9 degrees, and has...

Constraints on chemical heterogeneities in the upper mantle may be derived from studying seismically observable impedance contrasts that they produce. Away subduction zones, several causal mechanisms are possible to explain intermittently observed X-discontinuity (X) at 230–350 km depth: coesite-stishovite phase transition, enstatite clinoenstatite and/or carbonated silicate melting, all requir...

Karymskoye caldera lake is a nearly circular body of water with a diameter of approximately 4 km and a depth of up to 60 m. The sublacustrine, Surtseyan-type eruption in the lake on 2–3 January 1996 included a series of underwater explosions. A field survey conducted the following summer showed signs of tsunami wave runup around the entire coastline of the lake, with a maximum of 29 m runup at ...

2 ABSTRACT A six-moment microphysics module for sulfate aerosols based on the quadrature method of moments has been incorporated in a host 3-D regional model, the Multiscale Air Quality Simulation Platform (MAQSIP). Model performance was examined and evaluated by comparison with the in-situ observations over the eastern US for 40-day period from July 19 to August 28, 1995. The model generally r...

We analyze two simultaneous NuSTAR and SWIFT data of the Atoll type neutron star (NS) X-ray binary 4U 1728–34 observed on 1 and 3 October, 2013. Based on power density spectra, hardness ratio and colour-colour diagram, we infer that the first and second observations belong to the island state and lower banana state, respectively. During island state, a low-frequency quasi-periodic oscillation (...

snn = 17GeV a sudden increase in the pion source volume is observed for central PbPb collisions. This seems to imply that the pion phase density has reached a limit. The source size of different particles decreases with mass when the transverse velocity is held constant but increases with mass when mT is held constant. The antiproton source radius is larger than the proton source radius. So far...

A modeling system has been developed relying on plume diffusion theory to yield the upwind source area and emissions responsible for a measured downwind concentration. Three steps comprise this modeling strategy. Application of the MM5 meteorological model to yield a regional wind field, processing of the wind field through the Models-3/CMAQ meteorological processor (MCIP), inversion of the res...

We present the first case of strong gravitational lensing by a QSO: SDSS J0013+1523 at z = 0.120. The discovery is the result of a systematic search for emission lines redshifted behind QSOs, among 22 298 spectra of the SDSS data release 7. Apart from the z = 0.120 spectral features of the foreground QSO, the spectrum of SDSS J0013+1523 also displays the [O ii] and Hβ emission lines and the [O ...