Search Results - "Hartquist, T.W."

On the influence of plasma absorption by dust on the PMSE overshoot effect by Biebricher, A., Havnes, O., Hartquist, T.W., LaHoz, C.

“…The radar phenomenon PMSE (Polar Mesospheric Summer Echo), which is associated with the charged dust in the noctilucent clouds (NLCs), can be affected by…”
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First Simultaneous Rocket and Radar Detections of Rare Low Summer Mesospheric Clouds by Havnes, O., Latteck, R., Hartquist, T. W., Antonsen, T.

“…On 30 June 2016 a layer of dust, possibly meteoric smoke particles (MSPs), was observed with a rocket borne probe at 69.29°N, 16.02°E and altitudes of ~74 km…”
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Meter-scale variations of the charge carried by mesospheric dust by Havnes, O., Næsheim, L.I., Hartquist, T.W., Morfill, G.E., Melandsø, F., Schleicher, B., Trøim, J., Blix, T., Thrane, E.

“…Results from the first direct rocket probe measurements of the currents due to impacting mesospheric dust are reported. The observations which are corrected…”
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The Tromsø programme of in situ and sample return studies of mesospheric nanoparticles by Havnes, O., Antonsen, T., Hartquist, T.W., Fredriksen, Å., Plane, J.M.C.

“…We review some of the work performed over the past two decades with rocket-borne detectors to study mesospheric dust or nanoparticles, including meteoric smoke…”
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Generation of density inhomogeneities by magnetohydrodynamic waves by Falle, S.A.E.G., Hartquist, T.W.

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Generation of density inhomogeneities by magnetohydrodynamic waves by Falle, S.A.E.G., Hartquist, T.W.

“…We show that, in a cold plasma, one of the slow waves of the linear system is a Jordan mode, for which the density grows linearly with time. Although this mode…”
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Shock strengths in clumps impacted by winds of increasing power by Lim, A.J., Hartquist, T.W., Williams, D.A.

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Numerical simulations of tail formation in wind interactions with injected material by Falle, S.A.E.G., Coker, R.F., Pittard, J.M., Dyson, J.E., Hartquist, T.W.

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Numerical simulations of tail formation in wind interactions with injected material by Falle, S.A.E.G., Coker, R.F., Pittard, J.M., Dyson, J.E., Hartquist, T.W.

“…A numerical simulation of the interaction of a hypersonic wind with a mass source shows that, downstream of the source, the injected material occupies a cone…”
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Mach cones in dusty plasmas in planetary rings and in laboratory experiments by Havnes, O., Li, F., Hartquist, T.W., Aslaksen, T., Brattli, A.

“…We have discussed in more detail the possibilities of extracting information on the dusty plasma conditions in planetary rings and in laboratories by observing…”
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Observations of the overshoot effect during the 2004 EISCAT PMSE campaign by Havnes, O., La Hoz, C., Aylward, A., Belova, E., Hartquist, T.W., Kosch, M.J., Morfill, G., Jones, G.O.L., Næsheim, L.I., Rietveld, M.T., Rubin-Zuzic, M., Sigernes, F.

“…The radar phenomenon PMSE (Polar Mesospheric Summer Echoes), which is associated with charged dust particles, can be affected by artificial electron heating…”
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Solar-System-Scale Microstructure in the Diffuse Interstellar Medium by Hartquist, T.W., Falle, S.A.E.G., Williams, D.A.

“…The most remarkable discovery of recent years in the study of the interstellar medium has been the identification of spatial structures of sizes down to those…”
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Shock strengths in clumps impacted by winds of increasing power by Lim, A.J., Hartquist, T.W., Williams, D.A.

“…We have performed spherically symmetric and axisymetric hydrodynamic simulations of wind–clump interactions in order to determine the conditions under which a…”
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Injection of molecules from the surfaces of grains into the gas phase chemistry of an expanding cloud by Rae, J, Hartquist, T, Williams, D

“…We present model results for the chemistry in an expanding cloud or clump in which molecules are injected into the gas phase from grain surfaces when the clump…”
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The relevance of molecular observations to gamma-ray astronomy by Hartquist, T.W.

“…The interaction of cosmic rays with interstellar clouds may produce some of the observed gamma-ray sources. The use of molecular observations to estimate the…”
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