نتایج جستجو برای: σ hole

تعداد نتایج: 83507  

1998
JOHN KORMENDY DOUGLAS RICHSTONE

This paper is a study of the mass distribution in the central 35 ≃ 1.7 kpc of the E5 galaxy NGC 3377. Stellar rotation velocity and velocity dispersion profiles (seeing σ∗ = 0. 20 – 0. 56) and V -band surface photometry (σ∗ = 0. 20 – 0. 26) have been obtained with the Canada-France-Hawaii Telescope. NGC 3377 is kinematically similar to M32: the central kinematic gradients are steep. There is an...

Journal: :Soft matter 2018
J Szydłowska A Sitkiewicz E Nazaruk D Pociecha P Krzyczkowska A Krówczyński E Gorecka

Mesogenic dibenzophenazine derivatives have been synthesized and their liquid crystalline, fluorescent and electrochemical properties have been studied. All compounds form the Colhd phase, one of them (4-hydroxyphenyl 2,3,6,7-tetrakisoctyloxy-dibenzo[a,c]phenazine-11-carboxylate, 4) additionally shows an unusual columnar structure with p2mg symmetry, which is a partially lamellarized columnar p...

Journal: :Physical chemistry chemical physics : PCCP 2017
Baoshun Liu Jingjing Yang Xiujian Zhao Jiaguo Yu

In this research, a combination of in situ photoconductivity (σ) and kinetic simulations was used to study the role of electron interfacial transfer (IT) in the gaseous photocatalysis of formic acid by mesoporous nanocrystalline TiO2. The effects of light intensity, initial formic acid concentrations, oxygen amounts, and temperature on the in situ σ and the photocatalytic courses were studied i...

2005
Hubert L. Bray André Neves HUBERT L. BRAY ANDRÉ NEVES

In this paper we compute the σ-invariants (sometimes also called the smooth Yamabe invariants) of RP and RP × S1 (which are equal) and show that the only prime 3-manifolds with larger σ-invariants are S3, S2 × S1, and S2×̃S1 (the nonorientable S2 bundle over S1). More generally, we show that any 3-manifold with σ-invariant greater than RP is either S3, a connect sum with an S2 bundle over S1, or...

2013
Mariusz P. Mitoraj Artur Michalak

In the present study we have characterized the halogen bonding in selected molecules H3N-ICF3 (1-NH 3 ), (PH3)2C-ICF3 (1-CPH 3 ), C3H7Br-(IN2H2C3)2C6H4 (2-Br), H2-(IN2H2C3)2C6H4 (2-H 2 ) and Cl-(IC6F5)2C7H10N2O5 (3-Cl), containing from one halogen bond (1-NH 3 , 1-CPH 3 ) up to four connections in 3-Cl (the two Cl-HN and two Cl-I), based on recently proposed ETS-NOCV analysis. It was found base...

2008
FRANCESCO SHANKAR MARIANGELA BERNARDI

We utilize the local velocity dispersion function (VDF) of spheroids, together with their inferred age– distributions, to predict the VDF at higher redshifts (0 < z ∼< 6), under the assumption that (i) most of the stars in each nearby spheroid formed in a single episode, and (ii) the velocity dispersion σ remained nearly constant afterward. We assume further that a supermassive black hole (BH) ...

2009
J Szavits-Nossan

We consider the totally asymmetric simple exclusion process (TASEP) on the periodic chain in the presence of a single impurity site that is inaccessible to other particles and therefore acts as a static defect. Particles are allowed to advance any distance l ≥ 1 on the right with a probability that decays as l−(1+σ), where σ > 1. Despite the long range of the hopping, we find the same type of p...

2005
Eylee Jung SungHoon Kim D. K. Park

The condition for the existence of the superradiance modes is derived for the incident scalar, electromagnetic and gravitational waves when the spacetime background is a higher-dimensional rotating black hole with multiple angular momentum parameters. The final expression of the condition is 0 < ω < ∑ i miΩi, where Ωi is an angular frequency of the black hole and, ω and mi are the energy of the...

2008
C. J. Grier B. M. Peterson M. C. Bentz K. D. Denney J. D. Eastman M. Dietrich R. W. Pogge J. L. Prieto D. L. DePoy R. J. Assef D. W. Atlee J. Bird M. E. Eyler M. S. Peeples

We present the results of a recent reverberation-mapping campaign undertaken to improve measurements of the radius of the broad line region and the central black hole mass of the quasar PG2130+099. Cross correlation of the 5100 Å continuum and Hβ emission-line light curves yields a time lag of 22.9 −4.3 days, corresponding to a central black hole mass MBH = (3.8 ± 1.5)×10M⊙. This value supports...

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