Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Carvalho, Joel"'
The search for a space-time variation of the fundamental constants has been explored over the years to test our physical theories. In this paper, we use the dispersion measure ($DM$) of fast radio bursts (FRB) combined with type Ia supernovae (SNe) d
Externí odkaz:
http://arxiv.org/abs/2406.11691
Publikováno v:
Eur. Phys. J. C 83 (2023) 1128
Fast Radio Bursts (FRBs) are millisecond transient radio events with a high energy. By identifying the origin of the \textbf{burst}, it is possible to measure the redshift of the host galaxy, which can be used to constrain cosmological and astrophysi
Externí odkaz:
http://arxiv.org/abs/2307.06911
Measurements of the characteristic length scale $r_s$ of the baryon acoustic oscillations (BAO) provide a robust determination of the distance-redshift relation. Currently, the best (sub-per cent) estimate of $r_s$ at the drag epoch is provided by Co
Externí odkaz:
http://arxiv.org/abs/2303.15066
Publikováno v:
Eur. Phys. J. C 83 (2023) 138
Fast Radio Bursts (FRBs) are millisecond-duration radio transients with an observed dispersion measure ($DM$) greater than the expected Milky Way contribution, which suggests that such events are of extragalactic origin. Although some models have bee
Externí odkaz:
http://arxiv.org/abs/2205.07926
Autor:
Andrade, Uendert, Gonçalves, Rodrigo S., Carvalho, Gabriela C., Bengaly, Carlos A. P., Carvalho, Joel C., Alcaniz, Jailson
We report measurements of the angular scale of cosmic homogeneity ($\theta_{H}$) using the recently released luminous red galaxy sample of the sixteenth data release of the Sloan Digital Sky Survey (SDSS-IV LRG DR16). It consists of a model-independe
Externí odkaz:
http://arxiv.org/abs/2205.07819
Tese de mestrado integrado. Engenharia Civil. Faculdade de Engenharia. Universidade do Porto. 2010
Externí odkaz:
http://hdl.handle.net/10216/57680
Tese de mestrado. Engenharia Electrotécnica e de Computadores. Faculdade de Engenharia. Universidade do Porto. 2007
Externí odkaz:
http://hdl.handle.net/10216/12612
Autor:
Gonçalves, Rodrigo S., Carvalho, Gabriela C., Andrade, Uendert, Bengaly, Carlos A. P., Carvalho, Joel C., Alcaniz, Jailson
Publikováno v:
JCAP 03 (2021) 029
We report measurements of the scale of cosmic homogeneity ($r_{h}$) using the recently released quasar sample of the sixteenth data release of the Sloan Digital Sky Survey (SDSS-IV DR16). We perform our analysis in 2 redshift bins lying in the redshi
Externí odkaz:
http://arxiv.org/abs/2010.06635
Autor:
Alcaniz, Jailson S., Carvalho, Gabriela C., Bernui, Armando, Carvalho, Joel C., Benetti, Micol
The Baryon Acoustic Oscillations (BAO) imprinted a characteristic correlation length in the large-scale structure of the universe that can be used as a standard ruler for mapping out the cosmic expansion history. Here, we discuss the application of t
Externí odkaz:
http://arxiv.org/abs/1611.08458
Autor:
Dinis, Pedro A., Carvalho, Joel, Callapez, Pedro M., Mendes, Mário Miguel, Santos, Vanda F., Fernandes, Paulo
Publikováno v:
In Cretaceous Research June 2020 110