Thöne, C. C., Campana, S., Lazzati, D., Postigo, A. de Ugarte, Fynbo, J. P. U., Christensen, L., Levan, A. J., Aloy, M. A., Hjorth, J. (Jens), Jakobsson, P., Levesque, E. M., Malesani, D., Milvang-Jensen, B., Roming, P. W. A., Tanvir, Nial R., Wiersema, K., Gladders, M., Wuyts, E. and Dahle, H.. (2011) Variable Lyα sheds light on the environment surrounding GRB 090426. Monthly Notices of the Royal Astronomical Society, Vol.414 (No.1). pp. 479-488. ISSN 0035-8711

Full text not available from this repository.

Abstract

Long duration gamma-ray bursts are commonly associated with the deaths of massive stars. Spectroscopic studies using the afterglow as a light source provide a unique opportunity to unveil the medium surrounding it, probing the densest region of their galaxies. This material is usually in a low ionization state and at large distances from the burst site, hence representing the normal interstellar medium in the galaxy. Here we present the case of GRB 090426 at z= 2.609, whose optical spectrum indicates an almost fully ionized medium together with a low column density of neutral hydrogen. For the first time, we also observe variations in the Lyα absorption line. Photoionization modelling shows that we are probing material from the vicinity of the burst (∼80 pc). The host galaxy is a complex of two luminous interacting galaxies, which might suggest that this burst could have occurred in an isolated star-forming region outside its host galaxy created in the interaction of the two galaxies.

Item Type:	Journal Article
Subjects:	Q Science > QB Astronomy
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Gamma ray bursts, Interstellar matter, X-rays
Journal or Publication Title:	Monthly Notices of the Royal Astronomical Society
Publisher:	Wiley-Blackwell Publishing, Inc
ISSN:	0035-8711
Date:	2011
Volume:	Vol.414
Number:	No.1
Page Range:	pp. 479-488
Identification Number:	10.1111/j.1365-2966.2011.18408.x
Status:	Peer Reviewed
Publication Status:	Published
References:	Abazajian K. N. et al., 2009, ApJ, 182, 543 Aloy M., Janka T., Muller E., 2005, A&A, 436, 273 ¨ Amati L. et al., 2000, Sci, 290, 953 Antonelli L. A. et al., 2009, A&A, 507, L45 Belczynski K., Perna R., Bulik T., Kalogera V., Ivanova N., Lamb D. Q., 2006, ApJ, 648, 1110 Bjornsson G., Gudmundsson E. H., J ¨ ohannesson G., 2004, ApJ, 615, L77 ´ Campana S. et al., 2007, ApJ, 654, L17 Campana S., Thone C. C., de Ugarte Postigo A., Tagliaferri G., Moretti A., ¨ Covino S., 2010, MNRAS, 402, 2429 Cash W., 1979, ApJ, 228, 939 Cenko S. B. et al., 2008, ApJ, 677, 441 Christensen L., Fynbo J. P. U., Prochaska J. X., Thone C. C., de Ugarte ¨ Postigo A., Jakobsson P., 2011, ApJ, 727, 73 Cummings J. R. et al., 2009, GCN Circ., 9254. D’Elia V. et al., 2009, ApJ, 694, 332 de Ugarte Postigo A. et al., 2005, A&A, 443, 841 de Ugarte Postigo A. et al., 2011, A&A, 525, A109 D’Odorico S. et al., 2006, in McLean I. S., Iye M., eds, Proc. SPIE Conf. Ser. Vol. 6269, Ground-based and Airborne Instrumentation for Astronomy SPIE, Bellingham, p. 626933 Evans P. A. et al., 2010, A&A Fox A. J., Ledoux C., Vreeswijk P. M., Smette A., Jaunsen A. O., 2008, A&A, 491, 189 Fynbo J. P. U. et al., 2006a, A&A, 451, L47 Fynbo J. P. U. et al., 2006b, Nat, 444, 1047 Fynbo J. P. U., Prochaska J. X., Sommer-Larsen J., Dessauges-Zavadsky M., Møller P., 2008, ApJ, 683, 321 Fynbo J. P. U. et al., 2009, ApJS, 185, 526 Gehrels N. et al., 2004, ApJ, 611, 1005 Horvath I., Bagoly Z., Bal ´ azs L. G., de Ugarte Postigo A., Veres P., M ´ esz ´ aros ´ A., 2010, ApJ, 713, 552 Jakobsson P. et al., 2006, A&A, 460, L13 Jester S. et al., 2005, AJ, 130, 873 Kalberla P. M. W., Burton W. B., Hartmann D., Arnal E. M., Bajaja E., Morras R., Poppel W. G. L., 2005, A&A, 440, 775 Kann D. A. et al., 2011, ApJ (arXiv:0804.1959v2) Kouveliotou C., Meegan C. A., Fishman G. J., Bhat N. P., Briggs M. S., Koshut T. M., Paciesas W. S. Pendleton G. N., 1993, ApJ, 413, L101 Lazzati D., Morsony B. J., Begelman M. C., 2010, ApJ, 717, 239 Lazzati D., Perna R., 2003, MNRAS, 340, 694 Lazzati D., Perna R., Ghisellini G., 2001, MNRAS, 325, L19 Levesque E. M. et al., 2010, MNRAS, 401, 963 Lu H.-J., Liang E., Zhang B., Zhang B., 2010, ApJ, 725, 1965 ¨ Mizuta A., Aloy M., 2009, ApJ, 699, 1261 Møller P. et al., 2002, A&A, 396, L21 Norris J. P., Bonnell J. T., 2006, ApJ, 643, 266 Pannarale F., Tonita A., Rezzolla L., 2011, ApJ, 727, 95 Perley D. A. et al., 2008, ApJ, 688, 470 Perna R., Lazzati D., 2002, ApJ, 580, 261 Perna R., Loeb A., 1998, ApJ, 501, 467 Prochaska J. X., Chen H.-W., Dessauges-Zavadsky M., Bloom J. S., 2007, ApJ, 666, 267 Prochaska J. X., Dessauges-Zavadsky M., Ramirez-Ruiz E., Chen H.-W., 2008, ApJ, 685, 344 Reddy N. A., Steidel C. C., 2009, ApJ, 692, 778 Robinson P. B., Perna R., Lazzati D., van Marle A. J., 2010, MNRAS, 401, 88 Sato G. et al., 2009, GCN Circ., 9263 Savaglio S., 2006, New J. Phys., 8, 195 Savaglio S., Glazebrook K., LeBorgne D., 2009, ApJ, 691, 182 Steidel C. C., Erb D. K., Shapley A. E., Pettini M., Reddy N., Bogosavljev´ıc M., Rudie G. C., Rakic O., 2010, ApJ, 717, 289 Thone C. C., Greiner J., Savaglio S., Jehin E., 2007, ApJ, 671, 628 ¨ Thone C. C. et al., 2010, A&A, 523, A70 ¨ Ukwatta T. N., Gehrels N., Krimm H. A., Sakamoto T., Barthelmy S. D., Stamatikos M., 2009, GCN Circ., 9272 Vreeswijk P. et al., 2007, A&A, 468, 83 Watson D., Hjorth J., Fynbo J. P. U., Jakobsson P., Foley S., Sollerman J., Wijers R. A. M. J., 2007, ApJ, 660, L101 Xin L. et al., 2011, MNRAS, 410, 27
URI:	http://wrap.warwick.ac.uk/id/eprint/39465

Data sourced from Thomson Reuters' Web of Knowledge

Request changes to a record

Actions (login required)

View Item