139 citations
- R. Holanda21 · h 22
- J. Spinelly12 · h 9
- J. Alcaniz3 profiles10 · h 45
- F. A. Brito4 profiles7 · h 23
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- E. R. B. de Mello5 · h 0
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- V. B. Bezerra5 · h 35
- Universidade Federal da ParaíbaBR45 papers
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- National ObservatoryBR13 papers
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- University of Science and Technology of ChinaCN3 papers
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9 papers · 1 filter
Probing the cosmic distance duality with strong gravitational lensing and supernovae Ia data
R. F. L. Holanda, V. C. Busti, J. S. Alcaniz
We propose and perform a new test of the cosmic distance-duality relation (CDDR), , where is the angular diameter distance and is the l…
Resonant frequencies of the hydrodynamic vortex
H. S. Vieira
We study the sound perturbation of the hydrodynamic vortex geometry and present an exact expression for the resonant frequencies (quasispectrum) of this geometry. Exact solution fo…
Constraints on a possible variation of the fine structure constant from galaxy cluster data
R. F. L. Holanda, S. J. Landau, J. S. Alcaniz +2
We propose a new method to probe a possible time evolution of the fine structure constant from X-ray and Sunyaev-Zeldovich measurements of the gas mass fraction () in…
Lineability in sequence and function spaces
G. Araújo, L. Bernal-González, G. A. Muñoz-Fernández +2
It is proved the existence of large algebraic structures \break --including large vector subspaces or infinitely generated free algebras-- inside, among others, the family of Lebes…
Two new tests to the distance duality relation with galaxy clusters
S. Santos-da-Costa, V. C. Busti, R. F. L. Holanda
The cosmic distance duality relation is a milestone of cosmology involving the luminosity and angular diameter distances. Any departure of the relation points to new physics or sys…
A note on multiple summing operators and applications
N. Albuquerque, G Araujo, D. Pellegrino +1
We prove a new result on multiple summing operators and among other applications, we provide a new extension of Littlewood's inequality to -linear forms.