Luis Raul Weber Abramo
CV Lattes
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Universidade de São Paulo (USP). Instituto de Física (IF) (Institutional affiliation for the last research proposal) Birthplace: Brazil
Undergraduate degree in Physics from Universidade de São Paulo (1990), M.Sc. in Physics from Universidade de São Paulo (1993) and Ph.D. in Physics from Brown University (1997). He is currently full professor at Universidade de São Paulo. Has experience in Physics, focusing on Cosmology and Astrophysics. [ORCID: 0000-0001-8295-7022] (Source: Lattes Curriculum)
- Large-scale structure in the local universe with the S-PLUS survey, AP.R
Abstract
The main goal of the present generation of extragalactic surveys (e.g., eBOSS and DES) is the exploration of cosmological parameters, in particular the equation of state of dark energy. However, there is now an increasing realization of the subtle interplay between between cosmology, large-scale structure, and galaxy evolution. Issues such as the bias of galaxies and halos, the pattern ...
- The BINGO telescope: a new 21 cm window for exploring the dark universe and other astrophysics, AP.TEM
Abstract
BINGO is a unique radio telescope designed to make the first detection of Baryon Acoustic Oscillations (BAO) at radio frequencies. This will be achieved by measuring the distribution of neutral hydrogen gas at cosmological distances using a technique called Intensity Mapping. Along with the Cosmic Microwave Background anisotropies, the scale of BAO is one of the most powerful probes of ...
- JSPS 2018 - Cosmological challenges to dark matter, dark energy and galaxy formation | São Paulo - SP, AO.R
- Exploring new frontiers with galaxy surveys, AP.R
Abstract
Cosmology and Extragalactic Astrophysics experienced significant advances over the last few years, as they reaped the immense benefits allowed by large-area surveys such as the Sloan Digital Sky Survey (I-II-III), WiggleZ, and others. While the present generation of surveys (e.g., BOSS and DES) emphasize the exploration of cosmological parameters, in particular the attempts to measure t...
- The 3-D universe: astrophysics with large galaxy surveys, AP.TEM
Abstract
Large galaxy surveys, either spectroscopic or photometric, are changing the landscape of Astronomy, since they are the best strategy to understand one of the most profound mysteries of contemporary cosmology: the nature of dark energy, the dominant component of the Universe, responsible for the acceleration of its expansion. From a cosmological perspective, galaxy redshift surveys are n...
(Only some records are available in English at this moment)
- Cosmological covariance matrices and machine learning methods, BP.DR
Abstract
Cosmic acceleration is Cosmology's greatest puzzle: is it due to dark energy or is it a result of modified gravitational theory on large scales? Many large-scale investments in astronomical instruments (DESI, Euclid, PFS, J-PAS, and others), in 2-4 years, will lead to a dramatic increase in the quantity and quality of the cosmological data. These data sets will encompass larger volumes,...
- Forward modeling of a multi-tracer cosmological survey, BP.MS
Abstract
The great question of modern cosmology is the source of cosmic acceleration: is it some new form of matter/energy, called dark energy? Or is it due to some modification in the laws of gravity? The large investment in new astronomical instruments has been fueling a dramatic growth in the quantity and quality of cosmological data. However, the richness and complexity of that data demands ...
- Large-scale structure in the local universe with the S-PLUS survey, BP.TT
(Only some records are available in English at this moment)
- Light-cone cosmology: structure formation in spherical coordinates, BP.IC
Abstract
Our observations of the Universe represent a very particular cross-section of the large-scale structures: we have access to spherical shells that correspond to earlier epochs as the radii of those shells increase. In other words, what we see are 2D spherical sections of our past light-cone. Furthermore, we cannot really measure the distance, but only the redshift -- which includes both ...
- The halo-galaxy connection, BP.IC
Abstract
According to recent studies on galaxy formation, every galaxy forms within a dark matter halo. The study of how formation and growth of galaxies over time is connected to the growth of the halos in which they form is designated as halo-galaxy connection. The advent of large galaxy surveys as well as high-resolution cosmological simulations are providing new insight into the statistical ...
- Primordial Non-gaussianities: theory and prospects for observations, BP.MS
Abstract
Inflation produces an approximately Gaussian spectrum of scale-independent density perturbations. Deviations from scale independence and from Gaussianity are key indicators of the physical processes behind inflation, and can reveal to us the physical nature of the field(s) responsible for this phase of the Universe. Primordial non-Gaussianity is manifested both in the cosmic microwave b...
(Only some records are available in English at this moment)
- Selection of Quasar candidates based on multi-band photometric data, BE.EP.DR
Abstract
The J-PAS survey of quasars and AGNs has the potential to become the largest, most complete survey of its kind, due to its narrow-band photometric system that can resolve the broad emission lines of quasars. With this BEPE project we will test our techniques (an optimized photo-z code and a machine-learning based spectrum classifier) and determine sets of criteria that would provide us ...
- Exploring the halo-galaxy connection with VIPERS, BE.EP.PD
Abstract
This document presents a research plan for a 4-month visit to the University of Milan (Italy), to work with Prof. Luigi Guzzo. The proposal is based on the exploitation of the "VIMOS Public Extragalactic Redshift Survey" (VIPERS), of which Prof. Guzzo is the leading scientist, in the context of our FAPESP project "Unifying Galaxy Evolution and Cosmology with Massive Dark-Energy Surveys"...
- Star/quasar separation and photo-z's of quasars in narrow-band filter surveys: the role of Bayesian priors, BE.EP.MS
Abstract
Quasars are the brightest non-transient objects in the Universe. They trace some of the heaviest halos, and are abundant at high redshifts, since their luminosity function peaks around $z~2$. These two facts imply that quasars (AGNs, in a more general sense) have a huge potential to help us map the web of structures of the Universe on its largest scales. This potential has not yet been ...
(Only some records are available in English at this moment)
| 2 / 2 | Ongoing research grants |
| 9 / 7 | Completed research grants |
| 5 / 5 | Ongoing scholarships in Brazil |
| 20 / 15 | Completed scholarships in Brazil |
| 5 / 5 | Completed scholarships abroad |
| 41 / 34 | All research grants and scholarships |
| Associated processes | |
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
| Publications | 7 |
| Citations | 19 |
| Cit./Article | 2.7 |
| Data from Web of Science | |
RAUL ABRAMO, L.; BALMES, IRENE; LACASA, FABIEN; LIMA, MARCOS. Scaling of the 1-halo terms with bias. Monthly Notices of the Royal Astronomical Society, v. 454, n. 3, p. 2844-2854, DEC 11 2015. Web of Science Citations: 3.
ABRAMO, L. RAUL; AMENDOLA, LUCA. Fisher matrix for multiple tracers: model independent constraints on the redshift distortion parameter. Journal of Cosmology and Astroparticle Physics, n. 6, JUN 2019. Web of Science Citations: 0.
NIEMIEC, A.; JULLO, E.; MONTERO-DORTA, A. D.; PRADA, F.; RODRIGUEZ-TORRES, S.; PEREZ, E.; KLYPIN, A.; ERBEN, T.; MAKLER, M.; MORAES, B.; et al. Probing galaxy assembly bias with LRG weak lensing observations. Monthly Notices of the Royal Astronomical Society, v. 477, n. 1, p. L1-L5, JUN 2018. Web of Science Citations: 3.
FAVOLE, GINEVRA; MONTERO-DORTA, ANTONIO D.; PRADA, FRANCISCO; RODRIGUEZ-TORRES, SERGIO A.; SCHLEGEL, DAVID J.. The mass-size relation of luminous red galaxies from BOSS and DECaLS. Monthly Notices of the Royal Astronomical Society, v. 480, n. 1, p. 1415-1425, OCT 2018. Web of Science Citations: 2.
RAUL ABRAMO, L.; BERTACCA, DANIELE. Disentangling the effects of Doppler velocity and primordial non-Gaussianity in galaxy power spectra. Physical Review D, v. 96, n. 12, DEC 29 2017. Web of Science Citations: 11.
VALE ASARI, N.; COUTO, G. S.; CID FERNANDES, R.; STASINSKA, G.; DE AMORIM, A. L.; RUSCHEL-DUTRA, D.; WERLE, A.; FLORIDO, T. Z.. Diffuse ionized gas and its effects on nebular metallicity estimates of star-forming galaxies. Monthly Notices of the Royal Astronomical Society, v. 489, n. 4, p. 4721-4733, NOV 2019. Web of Science Citations: 0.
MENDES DE OLIVEIRA, C.; RIBEIRO, T.; SCHOENELL, W.; KANAAN, A.; OVERZIER, R. A.; MOLINO, A.; SAMPEDRO, L.; COELHO, P.; BARBOSA, C. E.; CORTESI, A.; et al. The Southern Photometric Local Universe Survey (S-PLUS): improved SEDs, morphologies, and redshifts with 12 optical filters. Monthly Notices of the Royal Astronomical Society, v. 489, n. 1, p. 241-267, OCT 2019. Web of Science Citations: 0.
(References retrieved automatically from State of São Paulo Research Institutions)
SECCO, Lucas Frozza. Estimadores do espectro de potência em levantamentos de galáxias. 2015. Dissertação (Mestrado) - Instituto de Física. Universidade de São Paulo (USP). São Paulo.
XAVIER, Henrique Scemes. Supernovas Ia: dependências ambientais e inovações observacionais. 2014. Tese (Doutorado) – Instituto de Física. Universidade de São Paulo (USP). São Paulo.
GUANDALIN, Caroline Macedo. Não-Gaussianidades Primordiais: Teoria e Perspectivas para Observações. 2018. Dissertação (Mestrado) - Instituto de Física. Universidade de São Paulo (USP). São Paulo.
REIMBERG, Paulo Henrique Flose. Polarização da radiação cósmica de fundo. 2009. Dissertação (Mestrado) - Instituto de Física. Universidade de São Paulo (USP). São Paulo.
XAVIER, Henrique Scemes. Tomografia do potencial gravitacional primordial através da polarização da radiação cósmica de fundo em aglomerados de galáxias. 2007. Dissertação (Mestrado) - Instituto de Física. Universidade de São Paulo (USP). São Paulo.
SILVA, Carolina Queiroz de Abreu. Identificação e redshifts fotométricos para quasares do tipo-I com sistemas de filtros de bandas médias e estreitas. 2015. Dissertação (Mestrado) - Instituto de Física. Universidade de São Paulo (USP). São Paulo.
REIMBERG, Paulo Henrique Flose. Aspectos físico-matemáticos no tratamento de lentes gravitacionais sobre a radiação cósmica de fundo. 2013. Tese (Doutorado) – Instituto de Física. Universidade de São Paulo (USP). São Paulo.
PEREIRA, Thiago dos Santos. Teoria inflacionária em universos anisotrópicos. 2008. Tese (Doutorado) – Instituto de Física. Universidade de São Paulo (USP). São Paulo.