Buscar
Mostrando ítems 1-10 de 33
Multi-GPU maximum entropy image synthesis for radio astronomy
(Elsevier, 2018)
The maximum entropy method (MEM) is a well known deconvolution technique in radio-interferometry. This method solves a non-linear optimization problem with an entropy regularization term. Other heuristics such as CLEAN are ...
Patterns in the Multiwavelength Behavior of Candidate Neutrino Blazars
(IOP Publishing, 2020)
Motivated by the identification of the blazar TXS 0506+056 as the first promising high-energy neutrino counterpart candidate, we search for additional neutrino blazar candidates among the Fermi-Large Area Telescope detected ...
A FPGA-based fast converging digital adaptive filter for real time RFI mitigation on ground based radio telescopes
(IOP Publishing Ltd, 2018)
Radio Frequency Interference (RFI) is a growing concern in the radio astronomy community. Single-dish telescopes are particularly susceptible to RFI. Several methods have been developed to cope with RF-polluted environments, ...
Physical properties of molecular clouds in the southern outer Galaxy
(1997)
We have used a deep CO survey of the third galactic quadrant (May et al. 1993) to derive the physical properties of molecular clouds in the outer Galaxy. Within the range of this survey, from 194° to 270° in galactic ...
Radio emission in ultracool dwarfs: the nearby substellar triple system VHS 1256-1257
(EDP Sciences, 2018)
Aims. With the purpose of investigating the radio emission of new ultracool objects, we carried out a targeted search in the recently discovered system VHS J125601.92-125723.9 (hereafter VHS 1256-1257); this system is ...
The diffuse molecular component in the nuclear bulge of the Milky Way
(EDP Sciences, 2018)
Context. The bulk of the molecular gas in the central molecular zone (CMZ) of the Galactic center region shows warm kinetic temperatures, ranging from > 20 K in the coldest and densest regions (n similar to 10(4-5) cm(-3)) ...
Modelling the spinning dust emission from LDN1780
(Oxford University Press, 2020)
We study the anomalous microwave emission (AME) in the Lynds Dark Nebula (LDN) 1780 on two angular scales. With publicly available data at an angular resolution of 1 degrees, we studied the spectral energy distribution of ...
PHANGS-ALMA: arcsecond CO(2-1) imaging of nearby star-forming galaxies
(IOP, 2021)
We present PHANGS-ALMA, the first survey to map CO J = 2 -> 1 line emission at similar to 1 '' similar to 100 pc spatial resolution from a representative sample of 90 nearby (d less than or similar to 20 Mpc) galaxies that ...
Study of the molecular and ionized gas in a possible precursor of an ultra-compact HII region
(EDP Sciences, 2017)
Aims. We aim to study the molecular and the ionized gas in a possible precursor of an ultra-compact H II region to contribute to the understanding of how high-mass stars build-up their masses once they have reached the ...