%0 Generic %1 castrotirado2013130606a %A Castro-Tirado, A. J. %A Sánchez-Ramírez, R. %A Ellison, S. L. %A Jelínek, M. %A Martín-Carrillo, A. %A Bromm, V. %A Gorosabel, J. %A Bremer, M. %A Winters, J. M. %A Hanlon, L. %A Meegan, S. %A Topinka, M. %A Pandey, S. B. %A Guziy, S. %A Jeong, S. %A Sonbas, E. %A Pozanenko, A. S. %A Cunniffe, R. %A Fernández-Muñoz, R. %A Ferrero, P. %A Gehrels, N. %A Hudec, R. %A Kubánek, P. %A Lara-Gil, O. %A Muñoz-Martínez, V. F. %A Pérez-Ramírez, D. %A Štrobl, J. %A Álvarez-Iglesias, C. %A Inasaridze, R. %A Rumyantsev, V. %A Volnova, A. %A Hellmich, S. %A Mottola, S. %A Cerón, J. M. Castro %A Cepa, J. %A Göğüş, E. %A Güver, T. %A Taş, Ö. Önal %A Park, I. H. %A Sabau-Graziati, L. %A Tejero, A. %D 2013 %K grb metallicity redshift %T GRB 130606A within a sub-DLA at redshift 5.91 %U http://arxiv.org/abs/1312.5631 %X Events such as GRB130606A at z=5.91, offer an exciting new window into pre-galactic metal enrichment in these very high redshift host galaxies. We study the environment and host galaxy of GRB 130606A, a high-z event, in the context of a high redshift population of GRBs. We have obtained multiwavelength observations from radio to gamma-ray, concentrating particularly on the X-ray evolution as well as the optical photometric and spectroscopic data analysis. With an initial Lorentz bulk factor in the range \Gamma_0 ~ 65-220, the X-ray afterglow evolution can be explained by a time-dependent photoionization of the local circumburst medium, within a compact and dense environment. The host galaxy is a sub-DLA (log N (HI) = 19.85+/-0.15), with a metallicity content in the range from ~1/7 to ~1/60 of solar. Highly ionized species (N V and Si IV) are also detected. This is the second highest redshift burst with a measured GRB-DLA metallicity and only the third GRB absorber with sub-DLA HI column density. GRB ' lighthouses' therefore offer enormous potential as backlighting sources to probe the ionization and metal enrichment state of the IGM at very high redshifts for the chemical signature of the first generation of stars.

@misc{castrotirado2013130606a, abstract = {Events such as GRB130606A at z=5.91, offer an exciting new window into pre-galactic metal enrichment in these very high redshift host galaxies. We study the environment and host galaxy of GRB 130606A, a high-z event, in the context of a high redshift population of GRBs. We have obtained multiwavelength observations from radio to gamma-ray, concentrating particularly on the X-ray evolution as well as the optical photometric and spectroscopic data analysis. With an initial Lorentz bulk factor in the range \Gamma_0 ~ 65-220, the X-ray afterglow evolution can be explained by a time-dependent photoionization of the local circumburst medium, within a compact and dense environment. The host galaxy is a sub-DLA (log N (HI) = 19.85+/-0.15), with a metallicity content in the range from ~1/7 to ~1/60 of solar. Highly ionized species (N V and Si IV) are also detected. This is the second highest redshift burst with a measured GRB-DLA metallicity and only the third GRB absorber with sub-DLA HI column density. GRB ' lighthouses' therefore offer enormous potential as backlighting sources to probe the ionization and metal enrichment state of the IGM at very high redshifts for the chemical signature of the first generation of stars.}, added-at = {2013-12-20T15:57:18.000+0100}, author = {Castro-Tirado, A. J. and Sánchez-Ramírez, R. and Ellison, S. L. and Jelínek, M. and Martín-Carrillo, A. and Bromm, V. and Gorosabel, J. and Bremer, M. and Winters, J. M. and Hanlon, L. and Meegan, S. and Topinka, M. and Pandey, S. B. and Guziy, S. and Jeong, S. and Sonbas, E. and Pozanenko, A. S. and Cunniffe, R. and Fernández-Muñoz, R. and Ferrero, P. and Gehrels, N. and Hudec, R. and Kubánek, P. and Lara-Gil, O. and Muñoz-Martínez, V. F. and Pérez-Ramírez, D. and Štrobl, J. and Álvarez-Iglesias, C. and Inasaridze, R. and Rumyantsev, V. and Volnova, A. and Hellmich, S. and Mottola, S. and Cerón, J. M. Castro and Cepa, J. and Göğüş, E. and Güver, T. and Taş, Ö. Önal and Park, I. H. and Sabau-Graziati, L. and Tejero, A.}, biburl = {https://www.bibsonomy.org/bibtex/26a57f334974e10a0687ba87b3543c6e7/miki}, description = {[1312.5631] GRB 130606A within a sub-DLA at redshift 5.91}, interhash = {0d4f4a2f40ac35d72cb684b7583ac0bd}, intrahash = {6a57f334974e10a0687ba87b3543c6e7}, keywords = {grb metallicity redshift}, note = {cite arxiv:1312.5631Comment: 10 pages, 9 figures, submitted to A&A}, timestamp = {2013-12-20T15:57:18.000+0100}, title = {GRB 130606A within a sub-DLA at redshift 5.91}, url = {http://arxiv.org/abs/1312.5631}, year = 2013 }