Výsledky vyhledávání - "UNESCO::ASTRONOMÍA Y ASTROFÍSICA::Otras especialidades astronómicas"

Relativistic Hydrodynamics and Spectral Evolution of GRB Jets

Publikováno v: RODERIC. Repositorio Institucional de la Universitat de Valéncia
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En la presente tesis hemos estudiado los sistemas progenitores de las erupciones de rayos gamma (ERG, o GRBs por sus siglas en inglés --Gamma-Ray Bursts--) de larga duración mediante modelos numéricos de su evolución dinámica y emisión electrom

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::0a05bfa7a37462095c568a7cb696ecdc
http://hdl.handle.net/10550/60784

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A photometric redshift of z = 1.8$^{\sf{+0.4}}_{\sf{-0.3}}$ for the AGILE GRB 080514B

Publikováno v: Rossi, A., de Ugarte Postigo, A., Ferrero, P., Kann, D. A., Klose, S., Schulze, S., Greiner, J., Schad, P., Filgas, R., Gonsalves, E. E., Küpcü Yoldas, A., Krühler, T., Szokoly, G., Yoldas, A., Afonso, P. M. J., Clemens, C., Bloom, J. S., Perley, D. A., Fynbo, J. P. U., Castro-Tirado, A. J., Gorosabel, J., Kubánek, P., Updike, A. C., Hartmann, D. H., Giuliani, A., Holland, S. T., Hanlon, L., Bremer, M., French, J., Melady, G. and García-Hernández, D. A. (2008): A photometric redshift of z = 1.8 (+0.4/-0.3) for the AGILE GRB 080514B, núm. 491 (2), pp. L29-L32
RODERIC. Repositorio Institucional de la Universitat de Valéncia
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Aims: The AGILE gamma-ray burst GRB 080514B is the first burst with detected emission above 30 MeV and an optical afterglow. However, no spectroscopic redshift for this burst is known. Methods: We compiled ground-based photometric optical/NIR and mil

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8263c73133399a99abb310cd9e050db2
https://doi.org/10.1051/0004-6361:200810736

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Spurious source generation in mapping from noisy phase-self-calibrated data

Autor: Ivan Marti-Vidal, J. M. Marcaide

Publikováno v: Martí-Vidal, I. and Marcaide, J. M. (2008): Spurious source generation in mapping from noisy phase-self-calibrated data, Astronomy and Astrophysics, núm. 480, vo. 1, pp. 289-295
RODERIC. Repositorio Institucional de la Universitat de Valéncia
instname

Phase self-calibration (or selfcal) is an algorithm often used in the calibration of interferometric observations in astronomy. Although a powerful tool, this algorithm presents strong limitations when applied to data with a low signal-to-noise ratio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b852d8f966877c346f81218a8c671a1e
https://doi.org/10.1051/0004-6361:20078690

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Enseñanza de la astronomía en el Bachillerato

Autor: Palomar Fons, Rafael, Solbes Matarredona, Jordi

Publikováno v: Palomar, R. y Solbes J. (2011). Enseñanza de la astronomía en el bachillerato. Servei de Publicacions Universitat de València.
RODERIC. Repositorio Institucional de la Universitat de Valéncia
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La observación de los astros y la búsqueda de regularidades en los cielos, puede considerarse una de las primeras manifestaciones científicas del ser humano. Desde entonces, astronomía y humanidad han ido de la mano hasta llegar a nuestros tiempo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::708498d5d2ee497230e8463c1b4d17ea
http://hdl.handle.net/10550/37326

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Measuring galaxy segregation with the mark connection function

Autor: Vicent J. Martínez, Pablo Arnalte-Mur, Dietrich Stoyan

Publikováno v: MARTÍNEZ, V. J., ARNALTE-MUR, P. and STOYAN, D. (2010): Measuring galaxy segregation with the mark connection function, Astronomy and Astrophysics, vol.513, núm. 4
RODERIC. Repositorio Institucional de la Universitat de Valéncia
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(abridged) The clustering properties of galaxies belonging to different luminosity ranges or having different morphological types are different. These characteristics or `marks' permit to understand the galaxy catalogs that carry all this information

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62aa9114e6746b45d312d0e3562330f0
http://hdl.handle.net/10550/12887

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Coherence loss in phase-referenced VLBI observations

Autor: S. Jiménez-Monferrer, J. M. Marcaide, Miguel A. Pérez-Torres, J. C. Guirado, Eduardo Ros, Ivan Marti-Vidal

Publikováno v: Martí-Vidal, I., Ros, E., Pérez-Torres, M. A., Guirado, J. C., Jiménez-Monferrer, S. and Marcaide, J. M. (2010): Coherence loss in phase-referenced VLBI observations, Astronomy and Astrophysics, núm. 515, vol. 7, art. no. 14203
RODERIC. Repositorio Institucional de la Universitat de Valéncia
instname

Context. Phase-referencing is a standard calibration technique in radio interferometry, particularly suited for the detection of weak sources close to the sensitivity limits of the interferometers. However, effects from a changing atmosphere and inac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38d68236d5495f6abb25306d0aa049ba
http://hdl.handle.net/10550/20042

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VLBI detection of the HST-1 feature in the M87 jet at 2 cm

Autor: Yuri Y. Kovalev, Eduardo Ros, Matthew L. Lister, C. S. Chang

Publikováno v: Chang, C. S., Ros, E., Kovalev, Y. Y. and Lister, M. L. (2010): VLBI detection of the HST-1 feature in the M 87 jet at 2 cm, Astronomy and Astrophysics, núm. 515, vol. 6
RODERIC. Repositorio Institucional de la Universitat de Valéncia
instname

A bright feature 80 pc away from the core in the powerful jet of M87 shows highly unusual properties. Earlier radio, optical and X-ray observations have shown that this feature, labeled HST-1, is superluminal, and is possibly connected with the TeV f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e676706f852f56204ac7e8136a59ad9c

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Deceleration of arbitrarily magnetized GRB ejecta: the complete evolution

Autor: Miguel A. Aloy, Dimitrios Giannios, Petar Mimica

Publikováno v: Mimica, P., Giannios, D. and Aloy, M. A. (2009): Deceleration of arbitrarily magnetized GRB ejecta: the complete evolution, Astronomy and Astrophysics, núm. 494, vol. 3, pp. 879
RODERIC. Repositorio Institucional de la Universitat de Valéncia
instname

(Abridged) We aim to quantitatively understand the dynamical effect and observational signatures of magnetization of the GRB ejecta on the onset of the afterglow. We perform ultrahigh-resolution one-dimensional relativistic MHD simulations of the int

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4428a2a9aca80f9fdcc9e509498fa187
http://hdl.handle.net/10550/16712

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INTEGRAL long-term monitoring of the Supergiant Fast X-ray Transient XTE J1739-302

Autor: Peter Kretschmar, S. Martínez-Núñez, Pablo Reig, Katja Pottschmidt, Jose M. Torrejon, Ingo Kreykenbohm, David M. Smith, Pere Blay, Ignacio Negueruela

Publikováno v: Blay, P., Martínez-Núñez, S., Negueruela, I., Pottschmidt, K., Smith, D. M., Torrejón, J. M., Reig, P., Kretschmar, P. and Kreykenbohm, I. (2008): INTEGRAL long-term monitoring of the supergiant fast X-ray transient XTE J1739-302, núm. 489, vol. 2, pp. 669-676
RODERIC. Repositorio Institucional de la Universitat de Valéncia
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In the past few years, a new class of High Mass X-Ray Binaries (HMXRB) has been claimed to exist, the Supergiant Fast X-ray Transients (SFXT). These are X-ray binary systems with a compact companion orbiting a supergiant star which show very short an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4aea0cdafa2357d0aad471f45581947
http://arxiv.org/abs/0806.4097

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On the existence of a reverse shock in magnetized gamma-ray burst ejecta

Autor: Petar Mimica, Dimitrios Giannios, M. A. Aloy

Publikováno v: Giannios, D., Mimica, P. and Aloy, M. A. (2008): On the existence of a reverse shock in magnetized gamma-ray burst ejecta, Astronomy and Astrophysics, núm. 478, vol.3, pp. 747-753
RODERIC. Repositorio Institucional de la Universitat de Valéncia
instname

The role of magnetic fields in gamma-ray burst (GRB) flows remains controversial. The study of the early afterglow phases and, in particular, of the reverse shock dynamics and associated emission offers a promising probe of the magnetization of the e

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23fc5c346c51b923993588ec278b1d4d
http://hdl.handle.net/10550/16814

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