Results 31 to 40 of about 1,415 (101)

Growth of Accreting Supermassive Black Hole Seeds and Neutrino Radiation

Journal of Astrophysics, Volume 2015, Issue 1, 2015., 2015
In the framework of microscopic theory of black hole (MTBH), which explores the most important processes of rearrangement of vacuum state and spontaneous breaking of gravitation gauge symmetry at huge energies, we have undertaken a large series of numerical simulations with the goal to trace an evolution of the mass assembly history of 377 plausible ...
Gagik Ter-Kazarian, Gary Wegner
wiley   +1 more source

Kuiper belts around nearby stars [PDF]

, 2010
Context. The existence of dusty debris disks around a large fraction of solar type main-sequence stars, inferred from excess far-IR and submillimetre emission compared to that expected from stellar photospheres, suggests that leftover planetesimal belts ...
R. Nilsson, R. Liseau, A. Brandeker, G. Olofsson, G. Pilbratt, C. Risacher, J. Rodmann, J. Augereau, P. Bergman, C. Eiroa, M. Fridlund, P. Th'ebault, G. P. D. O. Astronomy, S. University, Stockholm, Sweden., O. Observatory, C. U. Technology, Onsala, E. A. Division, Estec, Noordwijk, The Netherlands., Sron, Groningen, Esaestec Space Environment, Effects Section, U. J. Fourier-CNRS, L. D. D. Grenoble, Grenoble, France., Dpto. de F'isica Te'orica, F. Ciencias, U. A. D. Madrid, Madrid, Spain., O. Paris, S. Meudon, D. Physics, Astronomy, Open University, M. Keynes, UK., Science, Technology Facilities Council, R. Laboratory, Didcot   +46 more
semanticscholar   +1 more source

VIS: the visible imager for Euclid [PDF]

Other Conferences, 2012
Euclid-VIS is a large format visible imager for the ESA Euclid space mission in their Cosmic Vision program, scheduled for launch in 2019. Together with the near infrared imaging within the NISP instrument it forms the basis of the weak lensing ...
M. Cropper, R. Cole, A. James, Y. Mellier, J. Martignac, A. D. Giorgio, S. Paltani, L. Genolet, J. Fourmond, C. Cara, J. Amiaux, P. Guttridge, D. Walton, P. Thomas, K. Rees, P. Pool, J. Endicott, A. Holland, J. Gow, N. Murray, L. Duvet, J. Auguères, R. Laureijs, P. Gondoin, T. Kitching, R. Massey, H. Hoekstra, T. A. U. S. S. Laboratory, U. London, Surrey, United Kingdom., I. Paris, Paris, France, S. d’Astrophysique, C. A. L. Atomique, Orme des Merisiers, G. Yvette, I. D. A. E. P. Spaziali, -INAF, Roma, Italy, I. D. C. F. Astrophysics, Versoix, Switzerland, I. D. Spatiale, Campus Universitaire d'Orsay, Orsay, e2v technologies plc, Essex, Centre for Medical Imaging, Planetary, S. R. Institute, T. O. University, Milton Keynes, Research, Scientific Support Department, European Space Research, Technology Centre, Noordwijk, The Netherlands Institute for Radio Astronomy, T. U. O. Edinburgh, R. Observatory, Edinburgh, Uk, Department of Astronomy Physics, D. University, Durham, L. Observatory, H. Laboratory, Leiden, The Netherlands.   +71 more
semanticscholar   +1 more source

Optimized Reputable Sensing Participants Extraction for Participatory Sensor Networks

Mathematical Problems in Engineering, Volume 2014, Issue 1, 2014., 2014
By collecting data via sensors embedded personal smart devices, sensing participants play a key role in participatory sensor networks. Using information provided by reputable sensing participants ensures the reliability of participatory sensing data.
Weiwei Yuan, Donghai Guan, Yuanfeng Jin, Lu Zhen   +3 more
wiley   +1 more source

Coherent imaging at the Diamond beamline I13

physica status solidi (a), Volume 208, Issue 11, Page 2522-2525, November 2011., 2011
Abstract The Diamond beamline I13 for imaging and coherence applications is dedicated to hard X‐ray imaging on the micro and nano‐lengthscale. Two independent stations will be operated in a separate building at a distance of 250 m from the source. The imaging branch will perform in‐line phase contrast imaging and tomography over a large field of view ...
Christoph Rau, Ulrich Wagner, Zoran Pešić, Alberto De Fanis   +3 more
wiley   +1 more source

THE DISK-OUTFLOW SYSTEM IN THE S255IR AREA OF HIGH-MASS STAR FORMATION [PDF]

, 2015
We report the results of our observations of the S255IR area with the Submillimeter Array (SMA) at 1.3 mm in the very extended configuration and at 0.8 mm in the compact configuration as well as with the IRAM 30 m at 0.8 mm.
I. Zinchenko, S.-Y. Liu, Y. Su, S. Salii, A. Sobolev, P. Zemlyanukha, H. Beuther, D. Ojha, Manash R. Samal, Y. P. A. S. C. O. L. P. I. Sciences, N. Novgorod, Russia., Lobachevsky State University of Nizhni Novgorod, I. O. Astronomy, Astrophysics, A. Sinica, Taipei, Taiwan, R.O.C., Ural Federal University, Ekaterinburg, M. Astronomie, Heidelberg, H Germany, Infrared Astronomy Group, D. O. Astronomy, T. I. O. F. Research, Mumbai, India., L. D. Marseille, France., U. Geneva, Switzerland., Purple Mountain Observatory, Cas, China   +35 more
semanticscholar   +1 more source

Overview of the Near‐IR S0 Galaxy Survey (NIRS0S)

Advances in Astronomy, Volume 2011, Issue 1, 2011., 2011
An overview of the results of the near‐IR S0 galaxy survey (NIRS0S) is presented. NIRS0S is a magnitude‐ (mB ⩽ 12.5 mag) and inclination‐ (<65∘) limited sample of ̃200 nearby galaxies, mainly S0s, but includes also Sa and E galaxies. It uses deep Ks‐band images, typically reaching a surface brightness of 23.5 mag arcsec−2.
E. Laurikainen, H. Salo, R. Buta, J. H. Knapen, Valentina Klochkova   +4 more
wiley   +1 more source

Absorption features in the spectra of X-ray bursting neutron stars [PDF]

, 2008
Context. The discovery of photospheric absorption lines in XMM-Newton spectra of the X-ray bursting neutron star in EXO 0748−676 by Cottam and collaborators allows us to constrain the neutron star mass-radius ratio from the measured gravitational ...
T. Rauch, V. Suleimanov, K. I. F. Astronomy, Astrophysics, K. C. F. Astro, P. Physics, E. University, Tuebingen, H Germany, Kazan State University, Kazan, Russia.   +11 more
semanticscholar   +1 more source

Kirkpatrick‐Baez (KB) and Lobster Eye (LE) Optics for Astronomical and Laboratory Applications

X-Ray Optics and Instrumentation, Volume 2010, Issue 1, 2010., 2010
Most of grazing incidence (reflective) X‐ray imaging systems used in astronomy and in other (laboratory) applications are based on the Wolter 1 (or modified) arrangement. But there were proposed also other designs and configurations, which are considered for future applications for both in laboratory and (finitely) in space.
René Hudec, Stephen L. O′Dell
wiley   +1 more source

MAGNETIZED NEUTRON STAR ATMOSPHERES: BEYOND THE COLD PLASMA APPROXIMATION [PDF]

, 2011
All the neutron star (NS) atmosphere models published so far have been calculated in the “cold plasma approximation,” which neglects the relativistic effects in the radiative processes, such as cyclotron emission/absorption at harmonics of cyclotron ...
V. Suleimanov, G. Pavlov, K. I. F. Astronomy, Astrophysics, K. C. F. Astro, P. Physics, E. University, Tubingen, H Germany, Kazan Federal University, Russia., P. S. University, State University, St.-Petersburg   +13 more
semanticscholar   +1 more source