output
19922026
most citedObservation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC

10.9k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions
Showing 1997 · astro-phShow all

12 papers · 2 filters

astro-ph1997

Unification of Spectral States of Accreting Black Holes

Juri Poutanen, Paolo Coppi

Several galactic black holes show transitions between spectral states. In this paper we present a unifying radiation transfer model that can fit the spectral data in both states. W…

astro-ph1997★ 5 cited

An SPH code for galaxy formation problems; Presentation of the code

John Hultman, Daniel Kaellander

We present and test a code for two-fluid simulations of galaxy formation, one of the fluids being collision-less. The hydrodynamical evolution is solved through the SPH method whil…

astro-ph1997★ 160 cited

Abundances in metal-rich stars - Detailed abundance analysis of 47 G and K dwarf stars with [Me/H] 0.10 dex

Sofia Feltzing, Bengt Gustafsson

We have derived elemental abundances of O, Na, Mg, Al, Si, Ca, Ti, Cr, Mn, Fe, Co, Ni for 47 G and K dwarf, with [Me/H]>0.1 dex. The selection of stars was based on their kinematic…

astro-ph1997★ 57 cited

Near-infrared narrow-band photometry of M-giant and Mira stars: models meet observations

R. Alvarez, B. Plez

From near-infrared, narrow-band photometry of 256 oxygen-rich Mira variables we obtain evidence about the loops that these stars follow in colour-colour diagrams. We also find a ph…

astro-ph1997

Physical Characteristics of the Spectral States of Galactic Black Holes

Juri Poutanen, Julian H. Krolik, Felix Ryde

Using simple analytical estimates we show how the physical parameters characterizing different spectral states of the galactic black hole candidates can be determined using spectra…

astro-ph1997★ 4 cited

The rise and fall of the NaMgAl stars

Jocelyn Tomkin, Bengt Edvardsson, David L. Lambert +1

We have made new abundance determinations for a sample of NaMgAl stars. These stars, which are a subgroup of the nearby metal-rich field F and G disk dwarfs, were first identified…

astro-ph1997★ 2 cited

Two-phase spectral modelling of 1E1740.7-2942

O. Vilhu, J. Nevalainen, J. Poutanen +5

Combined ASCA and SIGMA data of 1E1740.7-2942 during the standard state (September 1993 and 1994) were fitted with two-phase models (ISMBB/Poutanen at al. and ADAF/Narayan et al.).…

astro-ph1997★ 2 cited

50 TeV HEGRA Sources and Infrared Radiation

V. Berezinsky, Lars Bergström, H. R. Rubinstein

The recent observations of 50 TeV gamma radiation by HEGRA have the potential of determining the extragalactic flux of infrared radiation. The fact that radiation is observed in th…

astro-ph1997★ 6 cited

A stellar endgame -- the born-again Sakurai's object

M. Asplund, B. Gustafsson, D. L. Lambert +1

The surface chemical composition of this remarkable star shows that it is hydrogen-deficient, carbon-rich and enriched in the light s-process elements. Spectra taken in May and Oct…

astro-ph1997★ 15 cited

Brightness Dependent Properties of Gamma Ray Bursts

Boris Stern, Juri Poutanen, Roland Svensson

Brightness dependent correlations have been conclusively detected in the average time profiles of gamma-ray bursts (GRBs). Determining the time constants of the stretched exponenti…

astro-ph1997★ 37 cited

Astrophysical-Neutrino Detection with Angular and Energy Resolution

L. Bergstrom, J. Edsjo, M. Kamionkowski

We investigate the improvement in sensitivity to astrophysical point sources of energetic ( GeV) neutrinos which can be achieved with angular and/or energy resolution of…

astro-ph1997★ 2 cited

Two-phase pair corona model for AGN: physical modelling and diagnostics

Juri Poutanen, Roland Svensson, Boris Stern

The predictions of the two-phase accretion disc-corona models for active galactic nuclei are compared with observations. We discuss the possibility to use X-ray spectral slopes, eq…