Exploració per tema "Àrees temàtiques de la UPC::Física::Astronomia i astrofísica"

Ara es mostren els items 1-20 de 711

    • 3D printed telescope: an interesting tool for teaching astronomy, science and technology 

      Macías Quesada, Roger (Universitat Politècnica de Catalunya, 2022-09-15)
      Treball Final de Grau
      Accés obert
      3D printing technologies experienced a huge evolution both in techniques and applications since its invention in the early 1980s. Fused Deposition Modeling (FDM) was the first term used to describe an additive manufacturing ...

    • 3D printed telescopes: an interesting tool for teaching Astronomy, Science and Technology 

      Macías Quesada, Roger; Marzoa Domínguez, Antonio; Casamor Martinell, Oriol; Soler Ruiz, Juan; Fernández, Daniel (Iniciativa Digital Politècnica, 2022)
      Text en actes de congrés
      Accés obert
      3D printing technologies experienced a huge evolution both in techniques and applications since its invention in the early 1980s. Fused Deposition Modelling (FDM) was the first term used to describe an additive manufacturing ...

    • A 3D printed f5 newtonian telescope: development of a student project for outreach, education, and dissemination 

      Macías Quesada, Roger; Marzoa Domínguez, Antonio; Casamor Martinell, Oriol; Rodríguez, Diego; Fernandez, Daniel (Universitat Politècnica de Catalunya (UPC), 2022)
      Comunicació de congrés
      Accés obert
      An Engineering student´s Final Degree Project based on the design and manufacturing of a 3D printed telescope is presented. The project involves both optical, mechanical, and electronic design, the construction of the ...

    • A Chandrasekhar mass progenitor for the type Ia supernova remnant 3C 397 from the enhanced abundances of nickel and manganese 

      Yamaguchi, H; Badenes Montoliu, Carles; Foster, Adam; Bravo Guil, Eduardo; Williams, Brian; Maeda, Keichi; Nobukawa, Masayoshi; Eriksen, Kristoffer; Brickhouse, Nancy; Petre, Robert; Koyama, Katsuyi (2015-03-12)
      Article
      Accés restringit per política de l'editorial
      Despite decades of intense efforts, many fundamental aspects of Type Ia supernovae (SNe Ia) remain elusive. One of the major open questions is whether the mass of an exploding white dwarf (WD) is close to the Chandrasekhar ...

    • A close look into the variable stars surrounding the first X-ray Transient 

      Gómez Fernández, Laura (Universitat Politècnica de Catalunya, 2023-07-05)
      Treball Final de Grau
      Accés obert
      With the purpose of unveiling the optical counterpart of the first Black Hole Transient (BHT) ever detected, a 12 sq. degree area of the sky was surveyed with the 570-megapixel DECam camera around the estimated position ...

    • A common origin of magnetism from planets to white dwarfs 

      Isern Vilaboy, Jordi; García-Berro Montilla, Enrique; Kulebi, Baybar; Lorén Aguilar, Pablo (2017-02-20)
      Article
      Accés obert
      Isolated magnetic white dwarfs have field strengths ranging from kilogauss to gigagauss. However, the origin of the magnetic field has not been hitherto elucidated. Whether these fields are fossil, hence the remnants of ...

    • A complex storm system in Saturn's north polar atmosphere in 2018 

      Sánchez Lavega, Agustín; García Melendo, Enrique José; Legarreta, Jon J.; Hueso, Ricardo; del Rio Gaztelurrutia, Teresa; Sanz-Requena, Jose Francisco; Pérez Hoyos, Santiago; Simon, Amy A.; Wong, Michael; Soria Guerrero, Manel; Gómez Forrellad, Josep Maria; Barry, Trevor; Delcroix, Marc; Sayanagi, Kunio; Blalock, J; Gunnarson, J. L.; Dyudina, Uliana; Ewald, S. (Springer Nature, 2019-10-21)
      Article
      Accés obert
      Saturn’s convective storms usually fall in two categories. One consists of mid-sized storms ~2,000¿km wide, appearing as irregular bright cloud systems that evolve rapidly, on scales of a few days. The other includes the ...

    • A dust cleaning system for solar arrays on Mars using pressurized CO2 

      Arias Montenegro, Francisco Javier (2018-11-15)
      Article
      Accés restringit per política de l'editorial
      Obtaining CO2 from the Martian atmosphere through a freezing process has been proposed during de last decade as a means of obtaining high-pressure gas without having to use mechanical and sorption pumps -which, besides ...

    • A Gaia view of the optical and X-ray luminosities of compact binary millisecond pulsars 

      Koljonen, Karri; Linares Alegret, Manuel (Oxford University Press, 2023-11-01)
      Article
      Accés obert
      In this paper, we study compact binary millisecond pulsars with low- and very low-mass companion stars (spiders) in the Galactic field, using data from the latest Gaia data release (DR3). We infer the parallax distances ...

    • A hidden population of white dwarfs with atmospheric carbon traces in the Gaia bifurcation 

      Camisassa, María Eugenia; Torres Gil, Santiago; Hollands, Mark; Koester, Detlev; Raddi, Roberto; Althaus, Leandro G.; Rebassa Mansergas, Alberto (EDP Sciences, 2023-06-01)
      Article
      Accés obert
      Context. The high-quality photometric and astrometric capabilities of the ESA Gaia space mission have revealed a bifurcation of the white dwarf sequence on the color magnitude diagram with two branches: A and B. While the ...

    • A large active wave trapped in Jupiter's equator 

      Legarreta, Jon; Barrado-Izaguirre, Naiara; García Melendo, Enrique José; Sanchez-Lavega, Agustin; Gómez-Forrellad, Josep M. (EDP Sciences, 2017-02-11)
      Article
      Accés obert
      Context. A peculiar atmospheric feature was observed in the equatorial zone (EZ) of Jupiter between September and December 2012 in ground-based and Hubble Space Telescope (HST) images. This feature consisted of two low ...

    • A laser cleaning system for astronomical mirrors 

      Marzoa Domínguez, Antonio; Tomàs Justribó, Albert; Casalta, Joan Manel; Solís, Javier; Gonzalo, José (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2022)
      Text en actes de congrés
      Accés obert
      Reflectivity loss due to dust deposition over primary mirrors is a key issue for ground-based astronomical observatories. Suspended atmospheric dust falls over the optical surface affecting its performance and optical ...

    • A model grid for the spectral analysis of X-ray emission in young Type Ia supernova remnants 

      Badenes Montoliu, Carles; Bravo Guil, Eduardo; Borkowski, K.J. (2005-08)
      Article
      Accés restringit per política de l'editorial
      We address a new set of models for the spectral analysis of the X-ray emission from young, ejecta-dominated Type Ia supernova remnants. These models are based on hydrodynamic simulations of the interaction between Type Ia ...

    • A moderately-sized nuclear network to assist multi-D hydrodynamic simulations of supernova explosions 

      Sanz, Axel; Cabezón Gómez, Rubén Martín; García Senz, Domingo (2022)
      Article
      Accés obert
      A key ingredient in any numerical study of supernova explosions is the nuclear network routine that is coupled with the hydrodynamic simulation code. When these studies are performed in more than one dimension, the size ...

    • A multi-frequency method to improve the long-term estimation of GNSS clock corrections and phase biases 

      Rovira Garcia, Adrià; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; González Casado, Guillermo; Ventura Traveset, Javier; Cacciapuoti, Luigi; Schoenemann, Erik (2021-12)
      Article
      Accés obert
      The space segment of the Global Navigation Satellite System (GNSS) is equipped with highly stable atomic clocks. In order to use these clocks as references, their time offsets must be estimated from ground measurements as ...

    • A new kind of type I supernovae? 

      Isern Vilaboy, Jordi; Bravo Guil, Eduardo; Domínguez, Inmaculada (Istituto Nazionale di Astrofisica, 2000-12)
      Article
      Accés obert
      In this paper we examine the consequences of the propagation of a slow deflagration front through a C-0 white dwarf that leads to the formation of a marginally bound remnant. This situation corresponds to the transition ...

    • A particle code for deflagrations in white dwarfs. I. Numerical techniques 

      García Senz, Domingo; Bravo Guil, Eduardo; Serichol Augué, Núria (1998-03)
      Article
      Accés restringit per política de l'editorial
      In this paper we report some specific features of the numerical technique used to study the dynamic evolution of massive white dwarfs following the explosive ignition of nuclear fuel under degenerate conditions. We focus ...

    • A planetary-scale disturbance in a long living three vortex coupled system in Saturn's atmosphere 

      del Rio-Gaztelurrutia, Teresa; Sanchez-Lavega, Agustin; Antuñano, Arrate; Legarreta, Jon; García Melendo, Enrique José; Sayanagi, Kunio; Hueso, Ricardo; Wong, Michael; Pérez Hoyos, Santiago; Rojas, Jose Felix; Simon, A. A.; de Pater, Imke; Blalock, J.; Barry, Trevor (2018-03-01)
      Article
      Accés obert
      The zonal wind profile of Saturn has a unique structure at 60°N with a double-peaked jet that reaches maximum zonal velocities close to 100 ms-1. In this region, a singular group of vortices consisting of a cyclone surrounded ...

    • A polarized fast radio burst at low Galactic latitude 

      Rowlinson, A.; O'Sullivan, Michael; Anghinolfi, Marco; Anton, G.; Avgitas, T.; Bertin, V.; Puricelli, Stefano; Coniglione, R.; Gleixner, A; Lefèvre, Dominique; Michael, Turner; Pellegrino, Carlo; Piattelli, P.; Sanchez Losa, Agustín; Schnabel, J.; Trovato, A.; Zúñiga Román, Juan; Elejabarrieta, María Jesús; Schrenk, Bernhard; Hahn, James K.; Lamanna, G.; Moulin, Eric; Moya Señas, Ignacio; Santangelo, A; Schulz, André; Vink, J; Wagner, Peter; Yang, Rong; Zaborov, D.; André, Michel (2017-08-01)
      Article
      Accés obert
      We report on the discovery of a new fast radio burst (FRB), FRB 150215, with the Parkes radio telescope on 2015 February 15. The burst was detected in real time with a dispersion measure (DM) of 1105.6 ± 0.8 pc cm-3, a ...

    • A population synthesis fitting of the Gaia resolved white dwarf binary population within 100 pc 

      Torres Gil, Santiago; Canals Canals, Pere; Jiménez Esteban, F. M.; Rebassa Mansergas, Alberto; Solano Márquez, Enrique (Oxford University Press, 2022-04-01)
      Article
      Accés obert
      The Gaia mission has provided an unprecedented wealth of information about the white dwarf population of our Galaxy. In particular, our studies show that the sample up to 100\,pc from the Sun can be considered as practically ...