Institution
Sofia University
Education•Sofia, Bulgaria•
About: Sofia University is a education organization based out in Sofia, Bulgaria. It is known for research contribution in the topics: Large Hadron Collider & Laser. The organization has 8533 authors who have published 15730 publications receiving 306320 citations. The organization is also known as: University of Sofia & BFUS.
Topics: Large Hadron Collider, Laser, Population, Standard Model, Adsorption
Papers published on a yearly basis
Papers
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INAF1, Saint Petersburg State University2, Pulkovo Observatory3, Harvard University4, National Central University5, Abastumani Astrophysical Observatory6, University of Michigan7, Ohio University8, Masaryk University9, Helsinki University of Technology10, Korea Astronomy and Space Science Institute11, University of Turku12, Institution of Engineers, Sri Lanka13, University of Crete14, Spanish National Research Council15, Max Planck Society16, Bulgarian Academy of Sciences17, University of Bordeaux18, Centre national de la recherche scientifique19, Ariès20, Dublin Institute for Advanced Studies21, Boston University22, Sofia University23, University College Dublin24, Sapienza University of Rome25, University of Colorado Denver26, Cork Institute of Technology27
TL;DR: In this paper, the authors present and analyse the WEBT multifrequency observations of 3C 454.3 in the 2007-2008 observing season, including XMM-Newton observations and near-IR spectroscopic monitoring, and compare the recent emission behaviour with the past one.
Abstract: We present and analyse the WEBT multifrequency observations of 3C 454.3 in the 2007-2008 observing season, including XMM-Newton observations and near-IR spectroscopic monitoring, and compare the recent emission behaviour with the past one. In the optical band we observed a multi-peak outburst in July-August 2007, and other faster events in November 2007 - February 2008. During these outburst phases, several episodes of intranight variability were detected. A mm outburst was observed starting from mid 2007, whose rising phase was contemporaneous to the optical brightening. A slower flux increase also affected the higher radio frequencies, the flux enhancement disappearing below 8 GHz. The analysis of the optical-radio correlation and time delays, as well as the behaviour of the mm light curve, confirm our previous predictions, suggesting that changes in the jet orientation likely occurred in the last few years. The historical multiwavelength behaviour indicates that a significant variation in the viewing angle may have happened around year 2000. Colour analysis reveals a complex spectral behaviour, which is due to the interplay of different emission components. All the near-IR spectra show a prominent Halpha emission line, whose flux appears nearly constant. The analysis of the XMM-Newton data indicates a correlation between the UV excess and the soft-X-ray excess, which may represent the head and the tail of the big blue bump, respectively. The X-ray flux correlates with the optical flux, suggesting that in the inverse-Compton process either the seed photons are synchrotron photons at IR-optical frequencies or the relativistic electrons are those that produce the optical synchrotron emission. The X-ray radiation would thus be produced in the jet region from where the IR-optical emission comes.
109 citations
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TL;DR: In this paper, numerical simulations reveal that variations in wind stress and heat fluxes can induce significant interannual fluctuations in the circulation of the upper layers of the Mediterranean, and the current anomalies persist for many months after a Winter atmospheric anomalous disturbance has occurred over the basin.
Abstract: Numerical simulations reveal that variations in wind stress and heat fluxes can induce significant interannual fluctuations in the circulation of the upper layers of the Mediterranean. From January 1980 to November 1988, the atmosphere shows changes in the structure and magnitude of the surface winds and in the air temperatures which induce modifications in the upper ocean structure and currents. The model prediction of the interannual fluctuations of the Sicily Strait baroclinic westward volume transport is in agreement with observations and the variability is explained as a function of the wind curl forcing in the region. The current anomalies persist for many months after a Winter atmospheric anomalous disturbance has occurred over the basin. The Eastern Mediterranean basin is the area where the interannual ocean response is most pronounced.
109 citations
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Max Planck Society1, Heidelberg University2, Katholieke Universiteit Leuven3, CERN4, University of Liverpool5, University of Edinburgh6, University of the West of Scotland7, Sofia University8, Technische Universität Darmstadt9, Bulgarian Academy of Sciences10, Petersburg Nuclear Physics Institute11, University of Manchester12, Technische Universität München13, Spanish National Research Council14, Frankfurt Institute for Advanced Studies15, University of Surrey16, Lund University17, Australian National University18, University of Mainz19, Complutense University of Madrid20, University of Helsinki21, University of Jyväskylä22, Goethe University Frankfurt23, Ludwig Maximilian University of Munich24, Michigan State University25, Chinese Academy of Sciences26, University of York27, Chalmers University of Technology28, University of Groningen29, Daresbury Laboratory30, Beihang University31, University of Warsaw32, University of Cologne33, Aarhus University34, Columbia University35, Lawrence Livermore National Laboratory36, Stockholm University37, Weizmann Institute of Science38, University of Jena39, Helmholtz Institute Jena40, Saitama University41, Dresden University of Technology42
TL;DR: In this article, the authors proposed to install a storage ring at an ISOL-type radioactive beam facility for the first time, which can provide a capability for experiments with stored secondary beams that is unique in the world.
Abstract: We propose to install a storage ring at an ISOL-type radioactive beam facility for the first time. Specifically, we intend to setup the heavy-ion, low-energy ring TSR at the HIE-ISOLDE facility in CERN, Geneva. Such a facility will provide a capability for experiments with stored secondary beams that is unique in the world. The envisaged physics programme is rich and varied, spanning from investigations of nuclear ground-state properties and reaction studies of astrophysical relevance, to investigations with highly-charged ions and pure isomeric beams. The TSR might also be employed for removal of isobaric contaminants from stored ion beams and for systematic studies within the neutrino beam programme. In addition to experiments performed using beams recirculating within the ring, cooled beams can also be extracted and exploited by external spectrometers for high-precision measurements. The existing TSR, which is presently in operation at the Max-Planck Institute for Nuclear Physics in Heidelberg, is well-suited and can be employed for this purpose. The physics cases as well as technical details of the existing ring facility and of the beam and infrastructure requirements at HIE-ISOLDE are discussed in the present technical design report.
109 citations
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Julie McEnery1, Alexander J. van der Horst2, Aaron Dominguez3, Alexander Moiseev +179 more•Institutions (52)
TL;DR: The All-sky Medium Energy Gamma-ray Observatory (AMEGO) is a probe class mission concept that will provide essential contributions to multimessenger astrophysics in the late 2020s and beyond.
Abstract: The All-sky Medium Energy Gamma-ray Observatory (AMEGO) is a probe class mission concept that will provide essential contributions to multimessenger astrophysics in the late 2020s and beyond. AMEGO combines high sensitivity in the 200 keV to 10 GeV energy range with a wide field of view, good spectral resolution, and polarization sensitivity.
109 citations
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TL;DR: Plasmacytoid variant of urothelial carcinoma is an aggressive variant associated with poor prognosis that presents at an advanced clinical stage and may be misdiagnosed as chronic cystitis or plasmacytoma, a pitfall further compounded by CD138 expression in some cases.
109 citations
Authors
Showing all 8600 results
Name | H-index | Papers | Citations |
---|---|---|---|
Michael Tytgat | 134 | 1449 | 94133 |
Leander Litov | 133 | 1424 | 92713 |
Eric Conte | 132 | 1206 | 84593 |
Georgi Sultanov | 132 | 1493 | 93318 |
Plamen Iaydjiev | 131 | 1285 | 87958 |
Anton Dimitrov | 130 | 1236 | 86919 |
Jordan Damgov | 129 | 1195 | 85490 |
Borislav Pavlov | 129 | 1245 | 86458 |
Jean-Laurent Agram | 128 | 1221 | 84423 |
Cristina Botta | 128 | 1160 | 79070 |
Jean-Charles Fontaine | 128 | 1190 | 84011 |
Peicho Petkov | 128 | 1111 | 83495 |
Muhammad Ahmad | 128 | 1187 | 79758 |
Roumyana Hadjiiska | 126 | 1003 | 73091 |
Mircho Rodozov | 124 | 972 | 70519 |