output
20042026
most citedUtilization of photon orbital angular momentum in the low-frequency radio domain

1.1k citations

Showing 2008Show all

8 papers · 1 filter

astro-ph2008★ 28 cited

Circumstellar water vapour in M-type AGB stars: Constraints from H2O(1_10 - 1_01) lines obtained with Odin

M. Maercker, F. L. Schoeier, H. Olofsson +8

Aims: Spectrally resolved circumstellar H2O(1_10 - 1_01) lines have been obtained towards three M-type AGB stars using the Odin satellite. This provides additional strong constrain…

hep-th2008★ 22 cited

An obstacle to populating the string theory landscape

Matthew C Johnson, Magdalena Larfors

We construct domain walls and instantons in a class of models with coupled scalar fields, determining, in agreement with previous studies, that many such solutions contain naked ti…

astro-ph2008★ 50 cited

Star formation around the HII region Sh2-235

M. S. Kirsanova, A. M. Sobolev, M. Thomasson +3

We present a picture of star formation around the HII region Sh2-235 (S235) based upon data on the spatial distribution of young stellar clusters and the distribution and kinematic…

hep-th2008★ 33 cited

Field dynamics and tunneling in a flux landscape

Matthew C Johnson, Magdalena Larfors

We investigate field dynamics and tunneling between metastable minima in a landscape of Type IIB flux compactifications, utilizing monodromies of the complex structure moduli space…

physics.plasm-ph2008★ 26 cited

Neutrino orbital angular momentum in a plasma vortex

J. T. Mendonça, B. Thidé

It is shown that an electron-neutrino beam, propagating in a background plasma, can be decomposed into orbital momentum (OAM) states, similar to the OAM photon states. Coupling bet…

astro-ph2008★ 18 cited

Odin observations of the Galactic centre in the 118-GHz band. Upper limit to the O2 abundance

Aa. Sandqvist, B. Larsson, Å. Hjalmarson +6

The Odin satellite has been used to search for the 118.75-GHz line of molecular oxygen (O2)in the Galactic centre. Odin observations were performed towards the Sgr A* circumnuclear…

astro-ph2008★ 175 cited

Energetic neutral atoms as the explanation for the high velocity hydrogen around HD 209458b

M. Holmström, A. Ekenbäck, F. Selsis +3

Absorption in the stellar Lyman- (Ly-) line observed during the transit of the extrasolar planet HD 209458b reveals high velocity atomic hydrogen at great distances from the…

astro-ph2008★ 1 cited

Extragalactic H3O+: Some Consequences

Floris van der Tak, Susanne Aalto, Rowin Meijerink

We discuss some implications of our recent detection of extragalactic H3O+: the location of the gas in M82, the origin of energetic radiation in M82, and the possible feedback effe…