Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Roland Svensson"'
Autor:
Roland Svensson, Sergei Nayakshin
Publikováno v:
The Astrophysical Journal. 551:L67-L71
It is currently believed that the ``standard'' accretion disk theory under-predicts the observed X-ray luminosity from Soft X-ray Transients (SXT) in quiescence by as much as 4 to 6 orders of magnitude. This failure of the standard model is considere
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a92f7f73b0852b739adf72685d3dce1b
https://doi.org/10.1086/319825
https://doi.org/10.1086/319825
Publikováno v:
The Astrophysical Journal. 540:L21-L24
An off-line scan for nontriggered gamma-ray bursts (GRBs) in the BATSE daily records at 1024 ms time resolution covering about 7 yr of observations gave 1353 nontriggered and 1581 triggered GRBs. The scan efficiency was measured by adding artificial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e213830a6c15971ef8324ac8f89979c7
https://doi.org/10.1086/312873
https://doi.org/10.1086/312873
Publikováno v:
The Astrophysical Journal. 535:158-166
Power density spectra (PDSs) of long gamma-ray bursts (GRBs) provide useful information on GRBs, indicating their self-similar temporal structure. The best power-law PDSs are displayed by the longest bursts (T90 > 100 s) in which the range of self-si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::673863175cfe0ae31a9c320867048db7
https://doi.org/10.1086/308836
https://doi.org/10.1086/308836
Autor:
Roland Svensson, Felix Ryde
Publikováno v:
The Astrophysical Journal. 529:L13-L16
For the first time, the consequences of combining two well-established empirical relations, describing different aspects of the spectral evolution of observed gamma-ray burst (GRB) pulses, are explored. These empirical relations are: i) the hardness-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8da6f4912defbf1c6e632ef552eda3e9
https://doi.org/10.1086/312443
https://doi.org/10.1086/312443
Autor:
Felix Ryde, Roland Svensson
Publikováno v:
The Astrophysical Journal. 512:693-698
The discovery (Liang & Kargatis 1996), that the peak energy of time-resolved spectra of gamma-ray burst (GRB) pulses decays exponentially with fluence, is analytically shown to imply that the time-integrated photon number spectrum of a pulse should h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8501f0d6f46ba2cc2c92f528d5fda1da
https://doi.org/10.1086/306818
https://doi.org/10.1086/306818
Autor:
D. Marsden, Martin Elvis, D. R. MacDonald, D. A. Schwartz, Greg Madejski, Roland Svensson, Andrzej A. Zdziarski, Christine Done, David L. Band, Donna M. Pierce, Duane Gruber, Philip Blanco, Richard E. Rothschild, Ron Remillard, William A. Heindl, Keith Jahoda
Publikováno v:
The Astrophysical Journal. 510:651-658
The Rossi X-ray Timing Explorer made a short (10 ks) observation of the radio galaxy Centaurus A on 14 August 1996. Analysis of the combined 2.5-240 keV spectrum has revealed a heavily absorbed(NH=9.42+/-0.24 e22 cm-2) primary power law (index=1.86+/
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a2ed744abf452ac86fcb6545d31f8d8
https://doi.org/10.1086/306618
https://doi.org/10.1086/306618
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 297:348-354
The high energy continuum in Seyfert galaxies and galactic black hole candidates is likely to be produced by a thermal plasma. There are difficulties in understanding what can keep the plasma thermal, especially during fast variations of the emitted
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe592f9d3b5959c481bb5175b822f0b0
https://doi.org/10.1046/j.1365-8711.1998.01442.x
https://doi.org/10.1046/j.1365-8711.1998.01442.x
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 283:892-904
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e20d1c390f0997e2efa0eb37a4cdcdd0
https://doi.org/10.1093/mnras/283.3.892
https://doi.org/10.1093/mnras/283.3.892
Autor:
Boris E. Stern, Roland Svensson
Publikováno v:
The Astrophysical Journal. 469:L109-L113
Although the time profiles of gamma ray bursts (GRBs) show extremely diverse behavior, their average statistical properties such as the average peak-aligned profile and the auto-correlation function show simple stretched-exponential behavior. This co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c0e4bd7a22cda5d210386e83ceaa9d7
https://doi.org/10.1086/310267
https://doi.org/10.1086/310267
Autor:
Roland Svensson
Publikováno v:
Sociology of Health and Illness. 18:379-398
This paper reports on a study of the interplay between nurses and doctors in medical and surgical wards in Sweden. The social order on the wards is seen as a negotiated order, the result of a continuous negotiation between doctors and nurses. The neg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42998f22d58d793dd662fa99f9679162
https://doi.org/10.1111/1467-9566.ep10934735
https://doi.org/10.1111/1467-9566.ep10934735