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321 papers · 1 filter
In search of progenitors for supernova-less GRBs 060505 and 060614: re-examination of their afterglows
D. Xu, R. L. C. Starling, J. P. U. Fynbo +6
GRB060505 and GRB060614 are nearby long-duration gamma-ray bursts (LGRBs) without accompanying supernovae (SNe) down to very strict limits. They thereby challenge the conventional…
Fermi LAT Observations of the Vela Pulsar
A. A. Abdo
The Vela pulsar is the brightest persistent source in the GeV sky and thus is the traditional first target for new gamma-ray observatories. We report here on initial Fermi Large Ar…
Modeling the X-ray emission of SN 1993J
Tanja K. Nymark, Poonam Chandra, Claes Fransson
We investigate the effects of radiative shocks on the observed X-ray emission from the Type II supernova SN 1993J. To this end, the X-ray emission is modeled as a result of the int…
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…
Gamma-ray and Radio Constraints of High Positron Rate Dark Matter Models Annihilating into New Light Particles
Lars Bergstrom, Gianfranco Bertone, Torsten Bringmann +2
The possibility of explaining the positron and electron excess recently found by the PAMELA and ATIC collaborations in terms of dark matter (DM) annihilation has attracted consider…
Evolution in the properties of Lyman-alpha emitters from redshifts z ~ 3 to z ~ 2
Kim K. Nilsson, Christian Tapken, Palle Moeller +5
Context: Narrow-band surveys for Ly-alpha emitters (LAEs) is a powerful tool in detecting high, and very high, redshift galaxies. Even though samples are growing at redshifts z = 3…