Results 41 to 50 of about 834,727 (299)

The Radio Spectral Index of 3C58 [PDF]

Symposium - International Astronomical Union, 2002
We report on 74 MHz and 330 MHz VLA observations of the plerionic supernova remnant 3C58. The radio spectral index, α, is uniform across the remnant to within 0.18, indicating a single source for the accelerated electrons. We find no emission from any shell surrounding the remnant.
M. F. Bietenholz, N. Kassim, K. Weiler
openaire   +1 more source

A novel red-edge-based anomalous water detection index and diagnostic framework

International Journal of Digital Earth
Frequent water anomalies pose serious threats to human habitats. Owing to the complexity of aquatic environments and the diversity of anomaly types, satellite remote sensing still faces challenges.
Gelilan Ma, Chuanwu Zhao, Hanyi Wu, Yuan Gao, Shoujia Ren, Yaozhong Pan   +5 more
doaj   +1 more source

Second-order corrections to slow-roll inflation in the brane cosmology

, 2004
We calculate the power spectrum, spectral index, and running spectral index for the RS-II brane inflation in the high-energy regime using the slow-roll expansion. There exist several modifications.
A.R. Liddle, C.L. Bennett, D.N. Spergel, E. Ramirez, E. Stewart, E.D. Stewart, G. Calcagni, H.V. Peiris, Hyung Won Lee, Kyong Hee Kim, L. Randall, M. Sasaki, N.J. Kim, P. Binetruy, P. Binetruy, P. Mukherjee, R. Maartens, R.-G. Cai, S. Tsujikawa, S.L. Bridle, V.F. Mukhanov, V.F. Mukhanov, Y.S. Myung, Yun Soo Myung   +23 more
core   +1 more source

Second-order corrections to noncommutative spacetime inflation

, 2004
We investigate how the uncertainty of noncommutative spacetime affects on inflation. For this purpose, the noncommutative parameter $\mu_0$ is taken to be a zeroth order slow-roll parameter.
C.L. Bennett, D.N. Spergel, E. Stewart, E. Stewart, E.D. Stewart, F. Lizzi, Gil Sang Lee, H. Kodama, H.V. Peiris, Hungsoo Kim, Hungsoo Kim, Hyung Won Lee, J. Martin, J. Martin, J. Martin, J.M. Bardeen, M. Fukuma, M. Li, O. Bertolami, O. Bertolami, P. Mukherjee, Q.G. Huang, Q.G. Huang, R. Brandenberger, R. Brandenberger, S. Tsujikawa, S.L. Bridle, T. Yoneya, V.F. Mukhanov, V.N. Lukash, V.N. Lukash, Yun Soo Myung   +31 more
core   +3 more sources

HST optical spectral index map of the jet of 3C 273 [PDF]

, 2001
We present HST images at 622 nm and 300 nm of the jet in 3C273 and determine the run of the optical spectral index at 0.2" along the jet. The smoothness of spectral index changes shows that the physical conditions are varying smoothly across the jet ...
Abraham, Baade, Bahcall, Blundell, Celotti, Chartas, Conway, Conway, Dermer, Flatters, Guthrie, H.-J. Röser, Hardee, Heavens, Heinz, K. Meisenheimer, Lelièvre, Lesch, Manolakou, Marshall, Meisenheimer, Meisenheimer, Meisenheimer, Meisenheimer, Neumann, Owen, Perley, Perlman, R. Conway, R. Perley, Röser, Röser, Röser, Röser, Röser, S. Jester, Sambruna, Schwartz, Tavecchio, Thomson, van der Laan, Wilson   +41 more
core   +2 more sources

Satellite-Derived Spectral Index Analysis for Drought and Groundwater Monitoring in Doñana Wetlands: A Tool for Informed Conservation Strategies

Geographies
Climate change and increased human activity are causing the Doñana wetlands, an important ecological reserve in southern Europe, to lose water more quickly.
Emilio Ramírez-Juidias, Paula Romero-Beltrán, Clara-Isabel González-López   +2 more
doaj   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen, Calogero Virgone, Antje Redlich, Michael Abele, Ricardo Lopez‐Almaraz, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Maja Mazic Cesen, Andrea Ferrari, Malgorzata A. Krawczyk, Yves Reguerre, Dominik T. Schneider, Ines B. Brecht, Charlotte Rigaud, Bilgehan Yalcin, Rainer Claus, Christian Vokuhl, Constantin Lapa, Jörg Fuchs, Segolene Hescot, Thomas Walter, Julien Hadoux, Daniel Orbach   +23 more
wiley   +1 more source

The Viewing Angles of Broad Absorption Line Versus Unabsorbed Quasars

, 2012
It was recently shown that there is a significant difference in the radio spectral index distributions of broad absorption line (BAL) quasars and unabsorbed quasars, with an overabundance of BAL quasars with steeper radio spectra.
Becker, C. De Breuck, DiPompeo, DiPompeo, Doi, Elvis, Ghosh, Gregg, Gregg, Kunert-Bajraszewska, M. A. DiPompeo, M. S. Brotherton, Ogle, Polatidis, Wills, Zhou   +15 more
core   +1 more source

X-ray power law spectra in active galactic nuclei [PDF]

, 2010
X-ray spectra of active galactic nuclei (AGN) are usually described as power law spectra, characterized by the spectral slope $\alpha$ or photon index $\Gamma$. Here we discuss the X-ray spectral properties within the framework of clumpy accretion flows,
Courvoisier, Deluit, Ishibashi, Ishibashi, Kelly, Laor, McHardy, McLure, Middleton, Nandra, Niko▯ajuk, Page, Papadakis, Papadakis, Piconcelli, Porquet, Reeves, Risaliti, Shemmer, Shemmer, Soldi, T. J.-L. Courvoisier, Titarchuk, Titarchuk, W. Ishibashi, Zdziarski, Zdziarski, Zdziarski   +27 more
core   +1 more source

Spectral Banach Algebras of Bounded Index

Journal of Algebra, 1993
The author deals mostly with \(I\)-rings (associative rings with the property that for every non-nilpotent element \(a\) there is a non-zero \(b\) with \(b = bab\)). We mention here some results of the paper with a Banach algebra flavour. Call a Banach algebra \(A\) spectral, if for every closed ideal \(I \subset A\) the quotient \(A/I\) is an \(I ...
openaire   +2 more sources