Zobrazeno 1 - 10
of 296
pro vyhledávání: '"Watson, D. J."'
Autor:
Saccardi, A., Vergani, S. D., De Cia, A., D'Elia, V., Heintz, K. E., Izzo, L., Palmerio, J. T., Petitjean, P., Rossi, A., Postigo, A. de Ugarte, Christensen, L., Konstantopoulou, C., Levan, A. J., Malesani, D. B., Møller, P., Ramburuth-Hurt, T., Salvaterra, R., Tanvir, N. R., Thöne, C. C., Vejlgaard, S., Fynbo, J. P. U., Kann, D. A., Schady, P., Watson, D. J., Wiersema, K., Campana, S., Covino, S., De Pasquale, M., Fausey, H., Hartmann, D. H., van der Horst, A. J., Jakobsson, P., Palazzi, E., Pugliese, G., Savaglio, S., Starling, R. L. C., Stratta, G., Zafar, T.
Publikováno v:
A&A 671, A84 (2023)
The study of the properties of galaxies in the first billion years after the Big Bang is one of the major topic of current astrophysics. Optical/near-infrared spectroscopy of the afterglows of long Gamma-ray bursts (GRBs) provide a powerful diagnosti
Externí odkaz:
http://arxiv.org/abs/2211.16524
Autor:
Lyman, J. D., Lamb, G. P., Levan, A. J., Mandel, I., Tanvir, N. R., Kobayashi, S., Gompertz, B., Hjorth, J., Fruchter, A. S., Kangas, T., Steeghs, D., Steele, I. A., Cano, Z., Copperwheat, C., Evans, P. A., Fynbo, J. P. U., Gall, C., Im, M., Izzo, L., Jakobsson, P., Milvang-Jensen, B., O'Brien, P., Osborne, J. P., Palazzi, E., Perley, D. A., Pian, E., Rosswog, S., Rowlinson, A., Schulze, S., Stanway, E. R., Sutton, P., Thöne, C. C., Postigo, A. de Ugarte, Watson, D. J., Wiersema, K., Wijers, R. A. M. J.
The binary neutron star merger GW170817 was the first multi-messenger event observed in both gravitational and electromagnetic waves. The electromagnetic signal began approximately 2 seconds post-merger with a weak, short burst of gamma-rays, which w
Externí odkaz:
http://arxiv.org/abs/1801.02669
Autor:
Levan, A. J., Lyman, J. D., Tanvir, N. R., Hjorth, J., Mandel, I., Stanway, E. R., Steeghs, D., Fruchter, A. S., Troja, E., Schrøder, S. L, Wiersema, K., Bruun, S. H., Cano, Z., Cenko, S. B., Postigo, A de Ugarte, Evans, P., Fairhurst, S., Fox, O. D., Fynbo, J. P. U., Gompertz, B., Greiner, J., Im, M., Izzo, L., Jakobsson, P., Kangas, T., Khandrika, H. G., Lien, A. Y., Malesani, D., O'Brien, P., Osborne, J. P., Plazzi, E., Pian, E., Perley, D. A., Rosswog, S., Ryan, R. E., Schulze, S., Sutton, P., Thöne, C. C., Watson, D. J., Wijers, R. A. M. J.
We present Hubble Space Telescope and Chandra imaging, combined with Very Large Telescope MUSE integral field spectroscopy of the counterpart and host galaxy of the first binary neutron star merger detected via gravitational wave emission by LIGO & V
Externí odkaz:
http://arxiv.org/abs/1710.05444
Autor:
Krühler, T., Malesani, D., Fynbo, J. P. U., Hartoog, O. E., Hjorth, J., Jakobsson, P., Perley, D. A., Rossi, A., Schady, P., Schulze, S., Tanvir, N. R., Vergani, S. D., Wiersema, K., Afonso, P. M. J., Bolmer, J., Cano, Z., Covino, S., D'Elia, V., Postigo, A. de Ugarte, Filgas, R., Friis, M., Graham, J. F., Greiner, J., Goldoni, P., Gomboc, A., Hammer, F., Japelj, J., Kann, D. A., Kaper, L., Klose, S., Levan, A. J., Leloudas, G., Milvang-Jensen, B., Guelbenzu, A. Nicuesa, Palazzi, E., Pian, E., Piranomonte, S., Sanchez-Ramirez, R., Savaglio, S., Selsing, J., Tagliaferri, G., Vreeswijk, P. M., Watson, D. J., Xu, D.
Publikováno v:
A&A 581, A125 (2015)
[Abridged] We present data and initial results from VLT/X-Shooter emission-line spectroscopy of 96 GRB-selected galaxies at 0.1
Externí odkaz:
http://arxiv.org/abs/1505.06743
Autor:
Schulze, S., Chapman, R., Hjorth, J., Levan, A. J., Jakobsson, P., Björnsson, G., Perley, D. A., Krühler, T., Gorosabel, J., Tanvir, N. R., Postigo, A. de Ugarte, Fynbo, J. P. U., Milvang-Jensen, B., Møller, P., Watson, D. J.
Gamma-ray bursts (GRBs) offer a route to characterizing star-forming galaxies and quantifying high-$z$ star formation that is distinct from the approach of traditional galaxy surveys: GRB selection is independent of dust and probes even the faintest
Externí odkaz:
http://arxiv.org/abs/1503.04246
Autor:
Friis, M., De Cia, A., Krühler, T., Fynbo, J. P. U., Ledoux, C., Vreeswijk, P. M., Malesani, D., Gorosabel, J., Starling, R. L. C., Jakobsson, P., Varela, K., Watson, D. J., Wiersema, K., Drachmann, A. P., Trotter, A., Thöne, C. C., Postigo, A. de Ugarte, D'Elia, V., Elliott, J., Maturi, M., Goldoni, P., Greiner, J., Haislip, J., Kaper, L., Knust, F., LaCluyze, A., Milvang-Jensen, B., Reichart, D., Schulze, S., Sudilovsky, V., Vergani, S. D.
Publikováno v:
MRNAS, 451, 167 (2015)
We present the first reported case of the simultaneous metallicity determination of a gamma-ray burst (GRB) host galaxy, from both afterglow absorption lines as well as strong emission-line diagnostics. Using spectroscopic and imaging observations of
Externí odkaz:
http://arxiv.org/abs/1409.6315
Autor:
D'Elia, V., Fynbo, J. P. U., Goldoni, P., Covino, S., Postigo, A. de Ugarte, Ledoux, C., Calura, F., Gorosabel, J., Malesani, D., Sanchez-Ramirez, F. Matteucci R., Savaglio, S., Castro-Tirado, A. J., Hartoog, O. E., Kaper, L., Munoz-Darias, T., Pian, E., Piranomonte, S., Tagliaferri, G., Tanvir, N., Vergani, S. D., Watson, D. J., Xu, D.
Publikováno v:
Astron. Astrophys. 564 (2014) A38
We present a study of the environment of the Swift long gamma-ray burst GRB 120327A at z ~2.8 through optical spectroscopy of its afterglow. We analyzed medium-resolution, multi-epoch spectroscopic observations (~7000 - 12000, corresponding to ~ 15 -
Externí odkaz:
http://arxiv.org/abs/1402.4026
Autor:
Schulze, S., Malesani, D., Cucchiara, A., Tanvir, N. R., Krühler, T., Postigo, A. de Ugarte, Leloudas, G., Lyman, J., Bersier, D., Wiersema, K., Perley, D. A., Schady, P., Gorosabel, J., Anderson, J. P., Castro-Tirado, A. J., Cenko, S. B., De Cia, A., Ellerbroek, L. E., Fynbo, J. P. U., Greiner, J., Hjorth, J., Kann, D. A., Kaper, L., Klose, S., Levan, A. J., Martín, S., O'Brien, P. T., Page, K. L., Pignata, G., Rapaport, S., Sánchez-Ramírez, R., Sollerman, J., Smith, I. A., Sparre, M., Thöne, C. C., Watson, D. J., Xu, D., Bauer, F. E., Bayliss, M., Björnsson, G., Bremer, M., Cano, Z., Covino, S., D'Elia, V., Frail, D. A., Geier, S., Goldoni, P., Hartoog, O. E., Jakobsson, P., Korhonen, H., Lee, K. Y., Milvang-Jensen, B., Nardini, M., Guelbenzu, A. Nicuesa, Oguri, M., Pandey, S. B., Petitpas, G., Rossi, A., Sandberg, A., Schmidl, S., Tagliaferri, G., Tilanus, R. P. J., Winters, J. M., Wright, D., Wuyts, E.
At low redshift, a handful of gamma-ray bursts (GRBs) have been discovered with peak luminosities ($L_{\rm iso} < 10^{48.5}~\rm{erg\,s}^{-1}$) substantially lower than the average of the more distant ones ($L_{\rm iso} > 10^{49.5}~\rm{erg\,s}^{-1}$).
Externí odkaz:
http://arxiv.org/abs/1401.3774
Autor:
Sparre, M., Hartoog, O. E., Krühler, T., Fynbo, J. P. U., Watson, D. J., Wiersema, K., D'Elia, V., Zafar, T., Afonso, P. M. J., Covino, S., Postigo, A. de Ugarte, Flores, H., Goldoni, P., Greiner, J., Hjorth, J., Jakobsson, P., Kaper, L., Klose, S., Levan, A. J., Malesani, D., Milvang-Jensen, B., Nardini, M., Piranomonte, S., Sollerman, J., Sánchez-Ramírez, R., Schulze, S., Tanvir, N. R., Vergani, S. D., Wijers, R. A. M. J.
Publikováno v:
2014 ApJ 785 150
Observations of the afterglows of long gamma-ray bursts (GRBs) allow the study of star-forming galaxies across most of cosmic history. Here we present observations of GRB 111008A from which we can measure metallicity, chemical abundance patterns, dus
Externí odkaz:
http://arxiv.org/abs/1309.2940
Autor:
Xu, D., Postigo, A. de Ugarte, Leloudas, G., Kruhler, T., Cano, Z., Hjorth, J., Malesani, D., Fynbo, J. P. U., Thoene, C. C., Sanchez-Ramirez, R., Schulze, S., Jakobsson, P., Kaper, L., Sollerman, J., Watson, D. J., Cabrera-Lavers, A., Cao, C., Covino, S., Flores, H., Geier, S., Gorosabel, J., Hu, S. M., Milvang-Jensen, B., Sparre, M., Xin, L. P., Zhang, T. M., Zheng, W. K., Zou, Y. C.
Publikováno v:
ApJ 776 (2013) 98
Long-duration gamma-ray bursts (GRBs) at z < 1 are in most cases found to be accompanied by bright, broad-lined Type Ic supernovae (SNe Ic-BL). The highest-energy GRBs are mostly located at higher redshifts, where the associated SNe are hard to detec
Externí odkaz:
http://arxiv.org/abs/1305.6832