A5064198721- Astrophysical Phenomena and Observations
- Astrophysics and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Astronomical Observations and Instrumentation
- Radio Astronomy Observations and Technology
- Pulsars and Gravitational Waves Research
- Teaching and Learning Programming
- Astronomy and Astrophysical Research
- Mechanics and Biomechanics Studies
- Infrared Target Detection Methodologies
- Image Processing Techniques and Applications
- Particle Accelerators and Free-Electron Lasers
- E-Learning and Knowledge Management
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Solar and Space Plasma Dynamics
- Educational Innovations and Technology
- AI in cancer detection
- Galaxies: Formation, Evolution, Phenomena
- Astrophysics and Star Formation Studies
- Scientific Research and Discoveries
- CCD and CMOS Imaging Sensors
- Image Retrieval and Classification Techniques
- Methane Hydrates and Related Phenomena
- Medieval Iberian Studies
- Fractal and DNA sequence analysis
Universitat de Girona
2011-2024
Universitat de Barcelona
1997-2008
Universidad de Jaén
2008
National Centre for Radio Astrophysics
2008
Max Planck Institute for Nuclear Physics
2008
Institut Català de Ciències del Clima
2008
University of Calgary
1998-2003
The Canadian Galactic Plane Survey (CGPS) is a project to combine radio, millimeter, and infrared surveys of the plane provide arcminute-scale images all major components interstellar medium over large portion disk. We describe in detail observations for low-frequency component CGPS, radio carried out at Dominion Radio Astrophysical Observatory (DRAO), summarize properties merged database that comprises CGPS. DRAO Synthesis Telescope have imaged 73° section plane, using ∼85% telescope time...
Here we discuss two consecutive MERLIN observations of the X-ray binary LS I +61°303. The first observation shows a double-sided jet extending up to about 200 AU on both sides central source. bent S-shaped structure similar one displayed by well-known precessing SS 433. precession suggested in image becomes evident second one, showing one-sided significantly rotated with respect day before. We conclude that derived relativistic () explains puzzling previous VLBI results. Moreover, fact is...
We present multi-epoch radio maps of the microquasar Cygnus X-3 obtained with Very Large Array (VLA). The observations were carried out as a Target-of-Opportunity (ToO) project triggered by series strong (>5 Jy) outbursts in September 2000. find that was well resolved and clearly elongated North-South direction at VLA resolution weeks after triggering events. In particular, map from our final epoch observation perfectly shows development two-sided jet extending over ~0.05 pc scales....
We present Very Long Baseline Interferometry (VLBI) observations of the high mass X-ray binary LS I +61°303, carried out with European VLBI Network (EVN). Over 11 hour observing run, performed ~10 days after a radio outburst, source showed constant flux density, which allowed sensitive imaging emission distribution. The structure in map shows clear extension to southeast. Comparing our data previous we interpret as collimated jet found several other binaries. Assuming that is result an...
El Pensamiento Computacional, por medio de la robótica o programación, está siendo incluido en el currículum todo mundo. No vano, se considera una las competencias necesarias para siglo XXI. Sin embargo, los docentes a menudo no han sido formados enseñar Computacional y ni siquiera saben exactamente qué es. Por ello, intentamos conocer cuál es concepto parte maestros formación metodología mixta, que nos permite detectar importantes faltas conocimiento errores relación con concepto. otro...
Abstract The term postdigital implies a rupture and continuity of the digital paradigm, which allows us to analyse challenges implied by largely digitalised society. At same time, transmedia goes completely unnoticed in literature, despite sharing key elements its reflection on paradigm. For this reason, article reflects points contact between storytelling, as well differences identified storytelling precedents: storytelling. It is discussed that becomes an evolution congruence with posed...
<i>Context. <i/>MGRO J2019+37 is an unidentified extended source of very high energy gamma-rays originally reported by the Milagro Collaboration as brightest TeV in Cygnus region. Its emission could be powered either a single or several sources. The GeV pulsar AGL J2020.5+3653, discovered AGILE and associated with PSR J2021+3651, contribute to from MGRO J2019+37.<i>Aims. <i/>Our aim identify radio near-infrared sources field J2019+37, study potential counterparts explain its...
A Bayesian analysis of the phase variations 26.5 day periodic radio outbursts from high-mass X-ray binary LS I +61°303 demonstrates a clear modulation on timescale similar to that previously found for long-term outburst peak flux density. Combining and information we obtain period 1584+14-11 days as well more accurate 26.4917 ± 0.0025 days. From shape find larger occur at an earlier orbital phase, closer periastron, probably result in wind rapidly rotating Be star primary. The also suggests...
A deep Very Large Array map of the X-ray binary Cygnus X-3 is presented. The compact and highly variable core system has been carefully removed through a special subtraction process. This procedure allows us to reveal weak extended structures very close it that otherwise would be masked by variability artifacts. In this way, we have able detect symmetric pair plasma condensations at arcsecond distances from core. These features are likely remnants strong radio flare occurred three months...
Formar a los profesores en formación su propio pensamiento computacional (PC) es fundamental para construir con ellos el discurso de la didáctica del PC y inclusión aula niños educación infantil primaria. Esta investigación plantea posibles soluciones ese reto analiza resultados una intervención llevada cabo 71 alumnos dos cohortes diferentes 2.º curso grados magisterio. Dicha se fundamenta práctica intensiva programación por bloques visuales un proyecto Scratch durante primera parte...
In this article, we delve into a hermeneutic process that analyzes the term Computational Thinking as it was constructed through Wing’s series of iterations in conceptualization attempts (2006, 2008, 2011 and 2014). On one hand, brings us to analyze relations intersections between different thought (analytical, logical, mathematical, system, engineering, algorithmic) role search for simplicity, generalization, scalability layers abstraction Thinking. other explore roots discursive...
In recent years, interest in Computational Thinking (CT), which is seen as a transversal competence that necessary the Knowledge Society, has spread to educational systems around world. this context, it become for training programmes pre-service teachers address topic. article, we explore knowledge, attitudes and expectations regarding CT held by teachers, prior receiving on field. We use descriptive analysis of both qualitative quantitative data obtained via an ad hoc questionnaire, whereby...
Several techniques have been proposed so far in order to perform faint compact source detection wide field interferometric radio images. However, all these methods can easily miss some detections or obtain a high number of false positive due the low intensity sources, noise ratio, and patterns present In this paper we novel strategy tackle problem. Our approach is based on using local features extracted from bank filters provide description different types structures. We then training step...
The automatic segmentation of extended real structures (such as SNRs, HII regions, bow shocks, etc) in large surveys is a difficult task due to their morphological complexity and wide variety scale surface brightness. With the aim dealing with these issues we propose this paper an method based on applying wavelet decomposition residual thresholded images. use strategy, instead original image, allows avoid artifacts produced by strong sources. Experimental results radio images demonstrate...
ABOUT THE CONCEPT OF COMPUTATIONAL THINKING AND ITS EDUCATIONAL POTENTIALITIES BY PRE-SERVICE TEACHERS
El pensament computacional està guanyant cada vegada més rellevància en el món educatiu. Més enllà de l’interès que pot tenir desenvolupar aquesta forma pensar i resoldre problemes un context cop informatitzat, desenvolupament del recolzar l’aprenentatge totes les disciplines conformen l’STEAM (Science, Technolgoy, Engineering, Arts and Mathematics). present article, realitzat marc projecte PECOFIM (Pensament Computacional la Formació Inicial Mestres), ofereix breu resum definicions...
In this paper we present a wavelet-based algorithm that is able to detect superimposed periodic signals in data with low signal-to-noise ratio. context, the results given by classical period determination methods depend strongly on intrinsic characteristics of each signal, like amplitude or profile. It then difficult different periods set. The method for here are independent signals.
In this paper we present a multiresolution-based method for period determination that is able to deal with unevenly sampled data. This allows us detect superimposed periodic signals lower signal-to-noise ratios than in classical methods. generalization of the wavelet-based detection unable data, presented by authors Otazu et al. (2002). new useful tool analysis real data and, particular, astronomical