Zobrazeno 1 - 10
of 155
pro vyhledávání: '"Burlon, D"'
Autor:
Da Costa, G. S., Soria, R., Farrell, S. A., Bayliss, D., Bessell, M. S., Vogt, F. P. A., Zhou, G., Points, S. D., Beers, T. C., López-Sánchez, Á. R., Bannister, K. W., Bell, M., Hancock, P. J., Burlon, D., Gaensler, B. M., Sadler, E. M., Tingay, S., Keller, S. C., Schmidt, B. P., Tisserand, P.
We report the discovery of an unusual stellar system, SMSS J130522.47-293113.0. The optical spectrum is dominated by a blue continuum together with emission lines of hydrogen, neutral and ionized helium, and the N III, C III blend at around 4640-4650
Externí odkaz:
http://arxiv.org/abs/1803.06359
Current models suggest gamma-ray bursts could be used as a way of probing Population III stars - the first stars in the early Universe. In this paper we use numerical simulations to demonstrate that late time radio observations of gamma-ray burst aft
Externí odkaz:
http://arxiv.org/abs/1604.03946
Autor:
Giroletti, M., Massaro, F., D'Abrusco, R., Lico, R., Burlon, D., Hurley-Walker, N., Johnston-Hollitt, M., Morgan, J., Pavlidou, V., Bell, M., Bernardi, G., Bhat, R., Bowman, J. D., Briggs, F., Cappallo, R. J., Corey, B. E., Deshpande, A. A., Ewall-Rice, A., Emrich, D., Gaensler, B. M., Goeke, R., Greenhill, L. J., Hazelton, B. J., Hindson, L., Kaplan, D. L., Kasper, J. C., Kratzenberg, E., Feng, L., Jacobs, D., Kurdryavtseva, N., Lenc, E., Lonsdale, C. J., Lynch, M. J., McKinley, B., McWhirter, S. R., Mitchell, D. A., Morales, M. F., Morgan, E., Oberoi, D., Offringa, A. R., Ord, S. M., Pindor, B., Prabu, T., Procopio, P., Riding, J., Rogers, A. E. E., Roshi, A., Shankar, N. Udaya, Srivani, K. S., Subrahmanyan, R., Tingay, S. J., Waterson, M., Wayth, R. B., Webster, R. L., Whitney, A. R., Williams, A., Williams, C. L.
Low-frequency radio arrays are opening a new window for the study of the sky, both to study new phenomena and to better characterize known source classes. Being flat-spectrum sources, blazars are so far poorly studied at low radio frequencies. We cha
Externí odkaz:
http://arxiv.org/abs/1602.08869
Massive stars formed in atomic hydrogen reservoirs: HI observations of gamma-ray burst host galaxies
Autor:
Michałowski, Michał J., Gentile, G., Hjorth, J., Krumholz, M. R., Tanvir, N. R., Kamphuis, P., Burlon, D., Baes, M., Basa, S., Berta, S., Ceron, J. M. Castro, Crosby, D., D'Elia, V., Elliott, J., Greiner, J., Hunt, L. K., Klose, S., Koprowski, M. P., Floc'h, E. Le, Malesani, D., Murphy, T., Guelbenzu, A. Nicuesa, Palazzi, E., Rasmussen, J., Rossi, A., Savaglio, S., Schady, P., Sollerman, J., Postigo, A. de Ugarte, Watson, D., van der Werf, P., Vergani, S. D., Xu, D.
Publikováno v:
A&A 582, A78 (2015)
Long gamma-ray bursts (GRBs), among the most energetic events in the Universe, are explosions of massive and short-lived stars, so they pinpoint locations of recent star formation. However, several GRB host galaxies have recently been found to be def
Externí odkaz:
http://arxiv.org/abs/1508.03094
Autor:
Bell, M. E., Huynh, M. T., Hancock, P., Murphy, Tara, Gaensler, B. M., Burlon, D., Trott, C., Bannister, K.
We present a three epoch survey for transient and variables in the extended Chandra Deep Field South at 5.5 GHz with the Australia Telescope Compact Array. A region covering $\sim$0.3 deg$^{2}$ was observed on timescales of 2.5 months and 2.5 years a
Externí odkaz:
http://arxiv.org/abs/1504.06371
Autor:
Ghirlanda, G., Salvaterra, R., Campana, S., Vergani, S. D., Japelj, J., Bernardini, M. G., Burlon, D., D'Avanzo, P., Melandri, A., Gomboc, A., Nappo, F., Paladini, R., Pescalli, A., Salafia, O. S., Tagliaferri, G.
Publikováno v:
A&A 578, A71 (2015)
Gamma Ray Bursts are detectable in the gamma-ray band if their jets are oriented towards the observer. However, for each GRB with a typical theta_jet, there should be ~2/theta_jet^2 bursts whose emission cone is oriented elsewhere in space. These off
Externí odkaz:
http://arxiv.org/abs/1504.02096
Autor:
Ghirlanda, G., Salvaterra, R., Ghisellini, G., Mereghetti, S., Tagliaferri, G., Campana, S., Osborne, J. P., O'Brien, P., Tanvir, N., Willingale, R., Amati, L., Basa, S., Bernardini, M. G., Burlon, D., Covino, S., D'Avanzo, P., Frontera, F., Gotz, D., Melandri, A., Nava, L., Piro, L., Vergani, S. D.
Gamma Ray Bursts (GRBs) are a powerful probe of the high redshift Universe. We present a tool to estimate the detection rate of high-z GRBs by a generic detector with defined energy band and sensitivity. We base this on a population model that reprod
Externí odkaz:
http://arxiv.org/abs/1502.02676
Autor:
Bernardini, M. G., Ghirlanda, G., Campana, S., Covino, S., Salvaterra, R., Atteia, J. -L., Burlon, D., Calderone, G., D'Avanzo, P., D'Elia, V., Ghisellini, G., Heussaff, V., Lazzati, D., Melandri, A., Nava, L., Vergani, S. D., Tagliaferri, G.
We investigated the rest frame spectral lags of two complete samples of bright long (50) and short (6) gamma-ray bursts (GRB) detected by Swift. We analysed the Swift/BAT data through a discrete cross-correlation function (CCF) fitted with an asymmet
Externí odkaz:
http://arxiv.org/abs/1410.5216
About 15% of Gamma Ray Bursts have precursors, i.e. emission episodes preceding the main event, whose spectral and temporal properties are similar to the main emission. We propose that precursors have their own fireball, producing afterglow emission
Externí odkaz:
http://arxiv.org/abs/1405.3981
Autor:
Ghirlanda, G., Burlon, D., Ghisellini, G., Salvaterra, R., Bernardini, M. G., Campana, S., Covino, S., D'Avanzo, P., D'Elia, V., Melandri, A., Murphy, T., Nava, L., Vergani, S. D., Tagliaferri, G.
Orphan Afterglows (OA) are slow transients produced by Gamma Ray Bursts seen off-axis that become visible on timescales of days/years at optical/NIR and radio frequencies, when the prompt emission at high energies (X and gamma rays) has already cease
Externí odkaz:
http://arxiv.org/abs/1402.6338