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201. THE UNUSUAL TEMPORAL AND SPECTRAL EVOLUTION OF THE TYPE IIn SUPERNOVA 2011ht

Author

Roming, P. W. A., primary, Pritchard, T. A., additional, Prieto, J. L., additional, Kochanek, C. S., additional, Fryer, C. L., additional, Davidson, K., additional, Humphreys, R. M., additional, Bayless, A. J., additional, Beacom, J. F., additional, Brown, P. J., additional, Holland, S. T., additional, Immler, S., additional, Kuin, N. P. M., additional, Oates, S. R., additional, Pogge, R. W., additional, Pojmanski, G., additional, Stoll, R., additional, Shappee, B. J., additional, Stanek, K. Z., additional, and Szczygiel, D. M., additional

Published
2012
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203. Erratum: The unusual γ-ray burst GRB 101225A from a helium star/neutron star merger at redshift 0.33

Author

Thöne, C. C., primary, de Ugarte Postigo, A., additional, Fryer, C. L., additional, Page, K. L., additional, Gorosabel, J., additional, Aloy, M. A., additional, Perley, D. A., additional, Kouveliotou, C., additional, Janka, H. T., additional, Mimica, P., additional, Racusin, J. L., additional, Krimm, H., additional, Cummings, J., additional, Oates, S. R., additional, Holland, S. T., additional, Siegel, M. H., additional, De Pasquale, M., additional, Sonbas, E., additional, Im, M., additional, Park, W.-K., additional, Kann, D. A., additional, Guziy, S., additional, García, L. Hernández, additional, Llorente, A., additional, Bundy, K., additional, Choi, C., additional, Jeong, H., additional, Korhonen, H., additional, Kubànek, P., additional, Lim, J., additional, Moskvitin, A., additional, Muñoz-Darias, T., additional, Pak, S., additional, and Parrish, I., additional

Published
2012
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204. The dust extinction curves of gamma-ray burst host galaxies

Author

Schady, P., primary, Dwelly, T., additional, Page, M. J., additional, Krühler, T., additional, Greiner, J., additional, Oates, S. R., additional, De Pasquale, M., additional, Nardini, M., additional, Roming, P. W. A., additional, Rossi, A., additional, and Still, M., additional

Published
2011
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205. FERMIANDSWIFTGAMMA-RAY BURST AFTERGLOW POPULATION STUDIES

Author

Racusin, J. L., primary, Oates, S. R., additional, Schady, P., additional, Burrows, D. N., additional, de Pasquale, M., additional, Donato, D., additional, Gehrels, N., additional, Koch, S., additional, McEnery, J., additional, Piran, T., additional, Roming, P., additional, Sakamoto, T., additional, Swenson, C., additional, Troja, E., additional, Vasileiou, V., additional, Virgili, F., additional, Wanderman, D., additional, and Zhang, B., additional

Published
2011
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206. Photometric redshifts for gamma-ray burst afterglows from GROND andSwift/UVOT

Author

Krühler, T., primary, Schady, P., additional, Greiner, J., additional, Afonso, P., additional, Bottacini, E., additional, Clemens, C., additional, Filgas, R., additional, Klose, S., additional, Koch, T. S., additional, Küpcü-Yoldaş, A., additional, Oates, S. R., additional, E., F. Olivares, additional, Page, M. J., additional, McBreen, S., additional, Nardini, M., additional, Nicuesa Guelbenzu, A., additional, Rau, A., additional, Roming, P. W. A., additional, Rossi, A., additional, Updike, A., additional, and Yoldaş, A., additional

Published
2011
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207. THE LATE PEAKING AFTERGLOW OF GRB 100418A

Author

Marshall, F. E., primary, Antonelli, L. A., additional, Burrows, D. N., additional, Covino, S., additional, de Pasquale, M., additional, Evans, P. A., additional, Fugazza, D., additional, Holland, S. T., additional, Liang, E. W., additional, O'Brien, P. T., additional, Oates, S. R., additional, Osborne, J. P., additional, Pagani, C., additional, Sakamoto, T., additional, Siegel, M. H., additional, Wu, X. F., additional, and Zhang, B., additional

Published
2011
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208. A Statistical Comparison of the Optical∕UV and X-ray GRB Afterglows Observed using the Swift UVOT and XRT

Author

Oates, S. R., primary, Page, M. J., additional, Schady, P., additional, De Pasquale, M., additional, Evans, P. A., additional, Page, K. L., additional, Chester, M. M., additional, Curran, P., additional, Koch, T. S., additional, Kuin, N. P. M., additional, Roming, P. W. A., additional, Siegel, M., additional, Zane, S., additional, Nousek, J. A., additional, McEnery, J. E., additional, Racusin, J. L., additional, and Gehrels, N., additional

Published
2011
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209. A statistical comparison of the optical/UV and X-ray afterglows of gamma-ray bursts using the Swift Ultraviolet Optical and X-ray Telescopes

Author

Oates, S. R., primary, Page, M. J., additional, Schady, P., additional, De Pasquale, M., additional, Evans, P. A., additional, Page, K. L., additional, Chester, M. M., additional, Curran, P. A., additional, Koch, T. S., additional, Kuin, N. P. M., additional, Roming, P. W. A., additional, Siegel, M. H., additional, Zane, S., additional, and Nousek, J. A., additional

Published
2010
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210. Discovery of the nearby long, soft GRB 100316D with an associated supernova

Author

Starling, R. L. C., primary, Wiersema, K., additional, Levan, A. J., additional, Sakamoto, T., additional, Bersier, D., additional, Goldoni, P., additional, Oates, S. R., additional, Rowlinson, A., additional, Campana, S., additional, Sollerman, J., additional, Tanvir, N. R., additional, Malesani, D., additional, Fynbo, J. P. U., additional, Covino, S., additional, D'Avanzo, P., additional, O'Brien, P. T., additional, Page, K. L., additional, Osborne, J. P., additional, Vergani, S. D., additional, Barthelmy, S., additional, Burrows, D. N., additional, Cano, Z., additional, Curran, P. A., additional, De Pasquale, M., additional, D'Elia, V., additional, Evans, P. A., additional, Flores, H., additional, Fruchter, A. S., additional, Garnavich, P., additional, Gehrels, N., additional, Gorosabel, J., additional, Hjorth, J., additional, Holland, S. T., additional, van der Horst, A. J., additional, Hurkett, C. P., additional, Jakobsson, P., additional, Kamble, A. P., additional, Kouveliotou, C., additional, Kuin, N. P. M., additional, Kaper, L., additional, Mazzali, P. A., additional, Nugent, P. E., additional, Pian, E., additional, Stamatikos, M., additional, Thöne, C. C., additional, and Woosley, S. E., additional

Published
2010
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213. GRB 081008: FROM BURST TO AFTERGLOW AND THE TRANSITION PHASE IN BETWEEN

Author

Yuan, F., primary, Schady, P., additional, Racusin, J. L., additional, Willingale, R., additional, Krühler, T., additional, O'Brien, P. T., additional, Greiner, J., additional, Oates, S. R., additional, Rykoff, E. S., additional, Aharonian, F., additional, Akerlof, C. W., additional, Ashley, M. C. B., additional, Barthelmy, S. D., additional, Filgas, R., additional, Flewelling, H. A., additional, Gehrels, N., additional, Göğüş, E., additional, Güver, T., additional, Horns, D., additional, Kızıloǧlu, Ü., additional, Krimm, H. A., additional, McKay, T. A., additional, Özel, M. E., additional, Phillips, A., additional, Quimby, R. M., additional, Rowell, G., additional, Rujopakarn, W., additional, Schaefer, B. E., additional, Vestrand, W. T., additional, Wheeler, J. C., additional, and Wren, J., additional

Published
2010
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215. SWIFT AND FERMI OBSERVATIONS OF THE EARLY AFTERGLOW OF THE SHORT GAMMA-RAY BURST 090510

Author

De Pasquale, M., primary, Schady, P., additional, Kuin, N. P. M., additional, Page, M. J., additional, Curran, P. A., additional, Zane, S., additional, Oates, S. R., additional, Holland, S. T., additional, Breeveld, A. A., additional, Hoversten, E. A., additional, Chincarini, G., additional, Grupe, D., additional, Abdo, A. A., additional, Ackermann, M., additional, Ajello, M., additional, Axelsson, M., additional, Baldini, L., additional, Ballet, J., additional, Barbiellini, G., additional, Baring, M. G., additional, Bastieri, D., additional, Bechtol, K., additional, Bellazzini, R., additional, Berenji, B., additional, Bissaldi, E., additional, Blandford, R. D., additional, Bloom, E. D., additional, Bonamente, E., additional, Borgland, A. W., additional, Bouvier, A., additional, Bregeon, J., additional, Brez, A., additional, Briggs, M. S., additional, Brigida, M., additional, Bruel, P., additional, Burnett, T. H., additional, Buson, S., additional, Caliandro, G. A., additional, Cameron, R. A., additional, Caraveo, P. A., additional, Carrigan, S., additional, Casandjian, J. M., additional, Cecchi, C., additional, Çelik, Ö., additional, Chekhtman, A., additional, Chiang, J., additional, Ciprini, S., additional, Claus, R., additional, Cohen-Tanugi, J., additional, Connaughton, V., additional, Conrad, J., additional, Dermer, C. D., additional, de Angelis, A., additional, de Palma, F., additional, Dingus, B. L., additional, do Couto e Silva, E., additional, Drell, P. S., additional, Dubois, R., additional, Dumora, D., additional, Farnier, C., additional, Favuzzi, C., additional, Fegan, S. J., additional, Fishman, G., additional, Focke, W. B., additional, Frailis, M., additional, Fukazawa, Y., additional, Funk, S., additional, Fusco, P., additional, Gargano, F., additional, Gasparrini, D., additional, Gehrels, N., additional, Germani, S., additional, Giglietto, N., additional, Giordano, F., additional, Glanzman, T., additional, Godfrey, G., additional, Granot, J., additional, Greiner, J., additional, Grenier, I. A., additional, Grove, J. E., additional, Guillemot, L., additional, Guiriec, S., additional, Harding, A. K., additional, Hayashida, M., additional, Hays, E., additional, Horan, D., additional, Hughes, R. E., additional, Jackson, M. S., additional, Jóhannesson, G., additional, Johnson, A. S., additional, Johnson, W. N., additional, Kamae, T., additional, Katagiri, H., additional, Kataoka, J., additional, Kawai, N., additional, Kerr, M., additional, Kippen, R. M., additional, Knödlseder, J., additional, Kocevski, D., additional, Kuss, M., additional, Lande, J., additional, Latronico, L., additional, Lemoine-Goumard, M., additional, Longo, F., additional, Loparco, F., additional, Lott, B., additional, Lovellette, M. N., additional, Lubrano, P., additional, Makeev, A., additional, Mazziotta, M. N., additional, McEnery, J. E., additional, McGlynn, S., additional, Meegan, C., additional, Mészáros, P., additional, Meurer, C., additional, Michelson, P. F., additional, Mitthumsiri, W., additional, Mizuno, T., additional, Monte, C., additional, Monzani, M. E., additional, Moretti, E., additional, Morselli, A., additional, Moskalenko, I. V., additional, Murgia, S., additional, Nolan, P. L., additional, Norris, J. P., additional, Nuss, E., additional, Ohno, M., additional, Ohsugi, T., additional, Omodei, N., additional, Orlando, E., additional, Ormes, J. F., additional, Paciesas, W. S., additional, Paneque, D., additional, Panetta, J. H., additional, Parent, D., additional, Pelassa, V., additional, Pepe, M., additional, Pesce-Rollins, M., additional, Piron, F., additional, Porter, T. A., additional, Preece, R., additional, Rainò, S., additional, Rando, R., additional, Razzano, M., additional, Reimer, A., additional, Reimer, O., additional, Reposeur, T., additional, Ritz, S., additional, Rochester, L. S., additional, Rodriguez, A. Y., additional, Roth, M., additional, Ryde, F., additional, Sadrozinski, H. F.-W., additional, Sander, A., additional, Parkinson, P. M. Saz, additional, Scargle, J. D., additional, Schalk, T. L., additional, Sgrò, C., additional, Siskind, E. J., additional, Smith, P. D., additional, Spandre, G., additional, Spinelli, P., additional, Stamatikos, M., additional, Starck, J.-L., additional, Stecker, F. W., additional, Strickman, M. S., additional, Suson, D. J., additional, Tajima, H., additional, Takahashi, H., additional, Tanaka, T., additional, Thayer, J. B., additional, Thayer, J. G., additional, Thompson, D. J., additional, Tibaldo, L., additional, Toma, K., additional, Torres, D. F., additional, Tosti, G., additional, Tramacere, A., additional, Uchiyama, Y., additional, Uehara, T., additional, Usher, T. L., additional, van der Horst, A. J., additional, Vasileiou, V., additional, Vilchez, N., additional, Vitale, V., additional, von Kienlin, A., additional, Waite, A. P., additional, Wang, P., additional, Winer, B. L., additional, Wood, K. S., additional, Wu, X. F., additional, Yamazaki, R., additional, Ylinen, T., additional, and Ziegler, M., additional

Published
2010
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217. MULTI-WAVELENGTH PROPERTIES OF THE TYPE IIb SN 2008ax

Author

Roming, P. W. A., primary, Pritchard, T. A., additional, Brown, P. J., additional, Holland, S. T., additional, Immler, S., additional, Stockdale, C. J., additional, Weiler, K. W., additional, Panagia, N., additional, Van Dyk, S. D., additional, Hoversten, E. A., additional, Milne, P. A., additional, Oates, S. R., additional, Russell, B., additional, and Vandrevala, C., additional

Published
2009
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218. A statistical study of gamma-ray burst afterglows measured by theSwiftUltraviolet Optical Telescope

Author

Oates, S. R., primary, Page, M. J., additional, Schady, P., additional, de Pasquale, M., additional, Koch, T. S., additional, Breeveld, A. A., additional, Brown, P. J., additional, Chester, M. M., additional, Holland, S. T., additional, Hoversten, E. A., additional, Kuin, N. P. M., additional, Marshall, F. E., additional, Roming, P. W. A., additional, Still, M., additional, Vanden Berk, D. E., additional, Zane, S., additional, and Nousek, J. A., additional

Published
2009
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219. GRB 081203A:SwiftUVOT captures the earliest ultraviolet spectrum of a gamma-ray burst

Author

Kuin, N. P. M., primary, Landsman, W., additional, Page, M. J., additional, Schady, P., additional, Still, M., additional, Breeveld, A. A., additional, De Pasquale, M., additional, Roming, P. W. A., additional, Brown, P. J., additional, Carter, M., additional, James, C., additional, Curran, P. A., additional, Cucchiara, A., additional, Gronwall, C., additional, Holland, S. T., additional, Hoversten, E. A., additional, Hunsberger, S., additional, Kennedy, T., additional, Koch, S., additional, Lamoureux, H., additional, Marshall, F. E., additional, Oates, S. R., additional, Parsons, A., additional, Palmer, D. M., additional, and Smith, P. J., additional

Published
2009
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220. GRB 080913 AT REDSHIFT 6.7

Author

Greiner, J., primary, Krühler, T., additional, Fynbo, J. P. U., additional, Rossi, A., additional, Schwarz, R., additional, Klose, S., additional, Savaglio, S., additional, Tanvir, N. R., additional, McBreen, S., additional, Totani, T., additional, Zhang, B. B., additional, Wu, X. F., additional, Watson, D., additional, Barthelmy, S. D., additional, Beardmore, A. P., additional, Ferrero, P., additional, Gehrels, N., additional, Kann, D. A., additional, Kawai, N., additional, Yoldaş, A. Küpcü, additional, Mészáros, P., additional, Milvang-Jensen, B., additional, Oates, S. R., additional, Pierini, D., additional, Schady, P., additional, Toma, K., additional, Vreeswijk, P. M., additional, Yoldaş, A., additional, Zhang, B., additional, Afonso, P., additional, Aoki, K., additional, Burrows, D. N., additional, Clemens, C., additional, Filgas, R., additional, Haiman, Z., additional, Hartmann, D. H., additional, Hasinger, G., additional, Hjorth, J., additional, Jehin, E., additional, Levan, A. J., additional, Liang, E. W., additional, Malesani, D., additional, Pyo, T.-S., additional, Schulze, S., additional, Szokoly, G., additional, Terada, K., additional, and Wiersema, K., additional

Published
2009
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221. GRB 060605: multi-wavelength analysis of the first GRB observed using integral field spectroscopy

Author

Ferrero, P., primary, Klose, S., additional, Kann, D. A., additional, Savaglio, S., additional, Schulze, S., additional, Palazzi, E., additional, Maiorano, E., additional, Böhm, P., additional, Grupe, D., additional, Oates, S. R., additional, Sánchez, S. F., additional, Amati, L., additional, Greiner, J., additional, Hjorth, J., additional, Malesani, D., additional, Barthelmy, S. D., additional, Gorosabel, J., additional, Masetti, N., additional, and Roth, M. M., additional

Published
2009
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222. The GRB Mean Extinction Curve

Author

Schady, P., primary, Page, M. J., additional, Oates, S. R., additional, Still, M., additional, Giobbi, Giuliana, additional, Tornambe, Amedeo, additional, Raimondo, Gabriella, additional, Limongi, Marco, additional, Antonelli, L. A., additional, Menci, Nicola, additional, and Brocato, Enzo, additional

Published
2009
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223. THE FIRST SWIFT ULTRAVIOLET/OPTICAL TELESCOPE GRB AFTERGLOW CATALOG

Author

Roming, P. W. A., primary, Koch, T. S., additional, Oates, S. R., additional, Porterfield, B. L., additional, Vanden Berk, D. E., additional, Boyd, P. T., additional, Holland, S. T., additional, Hoversten, E. A., additional, Immler, S., additional, Marshall, F. E., additional, Page, M. J., additional, Racusin, J. L., additional, Schneider, D. P., additional, Breeveld, A. A., additional, Brown, P. J., additional, Chester, M. M., additional, Cucchiara, A., additional, De Pasquale, M., additional, Gronwall, C., additional, Hunsberger, S. D., additional, Kuin, N. P. M., additional, Landsman, W. B., additional, Schady, P., additional, and Still, M., additional

Published
2008
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224. Gas-to-Dust Ratios in GRB Host Galaxies

Author

Schady, P., primary, Mason, K. O., additional, Page, M. J., additional, De Pasquale, M., additional, Morris, D. C., additional, Oates, S. R., additional, Roming, P. W. A., additional, Immler, S., additional, Vanden Berk, D. E., additional, Galassi, M., additional, Palmer, David, additional, and Fenimore, Ed, additional

Published
2008
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225. GRB 070318: A Case of Prompt Emission from the External Shock?

Author

Chester, M. M., primary, Wang, X. Y., additional, Cummings, J. R., additional, Grupe, D., additional, Hunsberger, S. D., additional, La Parola, V., additional, Marshall, F. E., additional, Mineo, T., additional, Oates, S. R., additional, Page, M. J., additional, Roming, P., additional, Galassi, M., additional, Palmer, David, additional, and Fenimore, Ed, additional

Published
2008
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226. Extreme Properties of GRB 061007: a highly energetic or a highly collimated burst?

Author

Schady, P., primary, De Pasquale, M., additional, Page, M. J., additional, Vetere, L., additional, Wang, X. Y., additional, Cummings, J., additional, Zhang, B., additional, Zane, S., additional, Breeveld, A., additional, Burrows, D. N., additional, Gehrels, N., additional, Gronwall, C., additional, Hunsberger, S., additional, Markwardt, C., additional, Mason, K. O., additional, Mészáros, P., additional, Norris, J. P., additional, Oates, S. R., additional, Pagani, C., additional, Poole, T. S., additional, Roming, P. W. A., additional, Smith, P. J., additional, Vanden Berk, D. E., additional, Galassi, M., additional, Palmer, David, additional, and Fenimore, Ed, additional

Published
2008
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229. Extreme properties of GRB 061007: a highly energetic or a highly collimated burst?

Author

Schady, P., primary, De Pasquale, M., additional, Page, M. J., additional, Vetere, L., additional, Pandey, S. B., additional, Wang, X. Y., additional, Cummings, J., additional, Zhang, B., additional, Zane, S., additional, Breeveld, A., additional, Burrows, D. N., additional, Gehrels, N., additional, Gronwall, C., additional, Hunsberger, S., additional, Markwardt, C., additional, Mason, K. O., additional, Mészáros, P., additional, Norris, J. P., additional, Oates, S. R., additional, Pagani, C., additional, Poole, T. S., additional, Roming, P. W. A., additional, Smith, P. J., additional, and Vanden Berk, D. E., additional

Published
2007
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230. The two-component afterglow of Swift GRB 050802

Author

Oates, S. R., primary, De Pasquale, M., additional, Page, M. J., additional, Blustin, A. J., additional, Zane, S., additional, McGowan, K., additional, Mason, K. O., additional, Poole, T. S., additional, Schady, P., additional, Roming, P. W. A., additional, Page, K. L., additional, Falcone, A., additional, and Gehrels, N., additional

Published
2007
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233. Energy injection in GRB afterglows: the cases of Swift GRBs 050401, 050801 and 050802

Author

De Pasquale, M., primary, Oates, S. R., additional, Beardmore, A., additional, Page, K. L., additional, Blustin, A. J., additional, Zane, S., additional, Page, M. J., additional, O’Mason, K., additional, Burrows, D. N., additional, Palmer, D., additional, Gehrels, N., additional, Nousek, J., additional, Roming, P., additional, Price, P., additional, and Zhang, B., additional

Published
2007
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234. Anatomy of a dark burst - the afterglow of GRB 060108

Author

Oates, S. R., primary, Mundell, C. G., additional, Piranomonte, S., additional, Page, K. L., additional, Pasquale, M. D., additional, Monfardini, A., additional, Melandri, A., additional, Zane, S., additional, Guidorzi, C., additional, Malesani, D., additional, Gomboc, A., additional, Bannister, N., additional, Blustin, A. J., additional, Capalbi, M., additional, Carter, D., additional, D'Avanzo, P., additional, Kobayashi, S., additional, Krimm, H. A., additional, O'Brien, P. T., additional, Page, M. J., additional, Smith, R. J., additional, Steele, I. A., additional, and Tanvir, N., additional

Published
2006
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235. UV/Optical Properties of GRBs with the Swift UVOT.

Author

Roming, P. W. A., Koch, T. S., Oates, S. R., Porterfield, B. L., and Berk, D. E. Vander

Subjects
TELESCOPES, GAMMA ray bursts, ULTRAVIOLET radiation, SLOPES (Physical geography), NUCLEAR physics
Abstract

The Swift Ultra-Violet/Optical Telescope has observed ∼200 gamma-ray bursts (GRBs) in its first two-and-a-half years of operation. From this collection of observations we have obtained ∼40 well sampled light curves. Using this dataset we present general optical/UV properties of GRBs, including filter dependent temporal slopes and color-color relationships. We also show that correlations exist between both the 11 hour X-ray flux (0.3–10 keV) and the prompt gamma-ray fluence (15–150 keV) and the v-band magnitude at 2000 s. [ABSTRACT FROM AUTHOR]

Published
2008
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236. Energy injection in GRB afterglows: the cases of Swift GRBs 050401, 050801 and 050802.

Author

De Pasquale, M., Oates, S. R., Beardmore, A., Page, K. L., Blustin, A. J., Zane, S., Page, M. J., O'Mason, K., Burrows, D. N., Palmer, D., Gehrels, N., Nousek, J., Roming, P., Price, P., and Zhang, B.

Subjects
*GAMMA ray bursts, *GAMMA ray astronomy, *X-ray bursts, *GAMMA decay, *X-rays, *AFTERGLOW (Physics)
Abstract

Swift very fast follow up observations of Gamma-Ray Bursts have allowed us to discover a new feature of GRB afterglows: a phase of shallow decay, usually attributed to energy injection in the burst ejecta, which can last for several thousands of seconds both in the X-ray and optical bands. Here I shall discuss this phase in the cases of Swift GRBs 050401, 050801 and 050802. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2007
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237. Understanding the Nature of Dark Bursts with the Afterglow of GRB 060108.

Author

Oates, S. R., Mundell, C. G., Piranomonte, S., Page, K. L., De Pasquale, M., Monfardini, A., Melandri, A., Zane, S., Guidorzi, C., and Malesani, D.

Subjects
*STARBURSTS, *AFTERGLOW (Physics), *X-ray binaries, *BINARY stars, *X-ray astronomy, *REDSHIFT
Abstract

We present observations of GRB 060108, the 100th burst detected by Swift. The optical afterglow was found to be below UVOT detection limits within the first 100 s, and the ratio of X-ray and R band measurements at ∼ 1000 s after the trigger gives a spectral index βOX = 0.45, which makes this burst “dark” according to the Jakobbson classification. We derive a maximum photometric redshift of z<3.2, which excludes a high redshift as a possible cause of the observed darkness, and we find that the most likely explanation is a combination of intrinsic faintness, a hard optical to X-ray spectrum and dust extinction. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2007
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238. The dark nature of GRB130528A and its host galaxy.

Author

Jeong, S., Castro-Tirado, A. J., Bremer, M., Winters, J. M., Gorosabel, J., Guziy, S., Pandey, S. B., Jelínek, M., Sánchez-Ramírez, R., Sokolov, Ilya V., Orekhova, N. V., Moskvitin, A. S., Tello, J. C., Cunniffe, R., Lara-Gil, O., Oates, S. R., Pérez-Ramírez, D., Bai, J., Fan, Y., and Wang, C.

Subjects
GAMMA ray bursts, ASTRONOMICAL observations, ASTRONOMICAL photometry, DARK matter, ASTRONOMICAL spectroscopy, STELLAR populations
Abstract

Aims. We study the dark nature of GRB130528A through multi-wavelength observations and conclude that the main reason for the optical darkness is local extinction inside of the host galaxy. Methods. Automatic observations were performed at the Burst Optical Observer and Transient Exploring System (BOOTES)-4/MET robotic telescope.We also triggered target of opportunity (ToO) observations at Observatorio de Sierra Nevada (OSN), IRAM Plateau de Bure Interferometer (PdBI) and Gran Telescopio Canarias (GTC + OSIRIS). The host galaxy photometric observations in optical to near-infrared (nIR) wavelengths were achieved through large ground-based aperture telescopes, such as 10.4 m Gran Telescopio Canarias (GTC), 4.2 m William Herschel Telescope (WHT), 6 m Bolshoi Teleskop Alt-azimutalnyi (BTA) telescope, and 2 m Liverpool Telescope (LT). Based on these observations, spectral energy distributions (SED) for the host galaxy and afterglow were constructed. Results. Thanks to millimetre (mm) observations at PdBI, we confirm the presence of a mm source within the XRT error circle that faded over the course of our observations and identify the host galaxy. However, we do not find any credible optical source within early observations with BOOTES-4/MET and 1.5 m OSN telescopes. Spectroscopic observation of this galaxy by GTC showed a single faint emission line that likely corresponds to [OII] 3727 Å at a redshift of 1.250 ± 0.001, implying a star formation rate (M☉ /yr) > 6.18 M☉ /yr without correcting for dust extinction. The probable line-of-sight extinction towards GRB130528A is revealed through analysis of the afterglow SED, resulting in a value of AGRB ≥ 0.9 at the rest frame; this is comparable to extinction levels found among other dark GRBs. The SED of the host galaxy is explained well (χ2/d.o.f. = 0.564) by a luminous (MB = -21.16), low-extinction (AV = 0, rest frame), and aged (2.6 Gyr) stellar population. We can explain this apparent contradiction in global and line-of-sight extinction if the GRB birth place happened to lie in a local dense environment. In light of having relatively small specific star formation rate ∼5.3 M☉ /yr (L=L*)-1, this also could explain the age of the old stellar population of host galaxy. [ABSTRACT FROM AUTHOR]

Published
2014
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239. AN INTRINSIC CORRELATION BETWEEN GRB OPTICAL/UV AFTERGLOW BRIGHTNESS AND DECAY RATE.

Author

Oates, S. R., Page, M. J., De Pasquale, M., Schady, P., Breevel, A. A., Holland, S. T., Kuin, N. P. M., and Marshall, F. E.

Subjects
*LUMINOSITY, *RADIOACTIVE decay, *AFTERGLOW (Physics), *GAMMA rays, *GAMMA ray astronomy
Abstract

We examine 48 Swift/UVOT long Gamma-ray Burst light curves and find a correlation between the logarithmic luminosity at 200 s and average decay rate determined from 200 s onwards, with a Spearman rank coefficient of -0.58 at a significance of 99.998% (4.2σ). We determine the log L200s - α200s correlation to be intrinsic and discuss two possible causes: there is a property of the central engine, outflow or external medium that effects the rate of energy release so that the bright afterglows release their energy more quickly and decay faster than the fainter afterglows; alternatively, the observers viewing angle may produce the correlation, with observers at large viewing angles observing fainter and slower decaying light curves. [ABSTRACT FROM AUTHOR]

Published
2013
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240. VLT and Suzaku observations of the Fermi pulsar PSR J1028-5819.

Author

Mignani, R. P., Razzano, M., Esposito, P., De Luca, A., Marelli, M., Oates, S. R., and Saz-Parkinson, P.

Subjects
FERMI Gamma-ray Space Telescope (Spacecraft), NEUTRON stars, X-rays, PULSARS, ENERGY dissipation, VERY Large Telescope (Chile)
Abstract

Context. The launch of the Fermi Gamma-ray Space Telescope in 2008 opened new perspectives in the multi-wavelength studies of neutron stars, with more than 100 γ-ray pulsars having since been detected. While most Fermi pulsars had previously been observed in the X-rays with Chandra and XMM-Newton, optical observations with 8 m-class telescopes exist for only a tiny fraction of them. Aims. We aim to search for optical emission from the Fermi pulsar PSR J1028 - 5819 (P = 91.4 ms). With a spin-down age τ ~ 90 kyr and a rotational energy loss rate of Ė ~ 8.3 × 1035 erg s-1, PSR J1028 - 5819 can be considered a transition object between the young, Vela-like pulsars and the middle-aged ones. At a distance of ~2.3 kpc and with a relatively low hydrogen column density PSR J1028 - 5819 is a good potential target for 8 m-class telescopes. Methods. Owing to its recent discovery, no optical observations of this pulsar have been reported so far. We used optical images taken with the Very Large Telescope (VLT) in the B and V bands to search for the optical counterpart of PSR J1028 - 5819 or constrain its optical brightness. At the same time, we used an archival Suzaku observation to confirm the preliminary identification of the pulsar's X-ray counterpart obtained by Swift. Results. Owing to the large uncertainty in the pulsar's radio position and the presence of a bright (V = 13.2) early F-type star at ≤ 4″ (star A), we are unable to detect its counterpart down to flux limits of B ~ 25.4 and V ~ 25.3, the deepest obtained so far for PSR J1028 - 5819. From the Suzaku observations, we find that the X-ray spectrum of the pulsar's candidate counterpart is best-fit by a power-law with spectral index γX = 1.7 ± 0.2 and an absorption column density NH < 1021 cm-2, which would support the proposed X-ray identification. Moreover, we find possible evidence of diffuse emission around the pulsar. If real and associated with a pulsar wind nebula (PWN), its surface brightness and angular extent would be compatible with the expectations for a ~100 kyr old pulsar at the distance of PSR J1028 - 5819. Conclusions. A far more accurate radio position for PSR J1028 - 5819 is necessary to better determine its position relative to star A. Future high-spatial resolution observations with both the HST and Chandra will be more able to distinguish the optical emission of PSR J1028 - 5819 from the halo of star A and confirm the existence of the candidate PWN. [ABSTRACT FROM AUTHOR]

Published
2012
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241. The dust extinction curves of gamma-ray burst host galaxies.

Author

Schady, P., Dwelly, T., Page, M. J., Krühler, T., Greiner, J., Oates, S. R., De Pasquale, M., Nardini, M., Roming, P. W. A., Rossi, A., and Still, M.

Subjects
INTERSTELLAR medium, GAMMA ray bursts, GALAXIES, REDSHIFT, STAR formation
Abstract

The composition and amount of interstellar dust within gamma-ray burst (GRB) host galaxies is of key importance when addressing selection effects in the GRB redshift distribution, and when studying the properties of their host galaxies. As well as the implications for GRB research, probing the dust within the high-z hosts of GRBs also contributes to our understanding of the conditions of the interstellar medium and star-formation in the distant Universe. Nevertheless, the physical properties of dust within GRB host galaxies continues to be a highly contended issue. In this paper we explore the mean extinction properties of dust within the host galaxies of a sample of 17 GRBs with total host galaxy visual extinction AV < 1 (> 1), which may be indicative of there being a dependence between dust abundance and the wavelength dependence of dust extinction, as has been previously speculated. [ABSTRACT FROM AUTHOR]

Published
2012
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242. A statistical comparison of the optical/UV and X-ray afterglows of gamma-ray bursts using the Swift Ultraviolet Optical and X-ray Telescopes.

Author

Oates, S. R., Page, M. J., Schady, P., De Pasquale, M., Evans, P. A., Page, K. L., Chester, M. M., Curran, P. A., Koch, T. S., Kuin, N. P. M., Roming, P. W. A., Siegel, M. H., Zane, S., and Nousek, J. A.

Subjects
*STATISTICAL physics, *COMPARATIVE studies, *AFTERGLOW (Physics), *GAMMA ray bursts, *ULTRAVIOLET radiation, *X-ray telescopes, *LIGHT curves, *SYNCHROTRON radiation
Abstract

We present the systematic analysis of the Ultraviolet/Optical Telescope (UVOT) and X-ray Telescope (XRT) light curves for a sample of 26 Swift gamma-ray bursts (GRBs). By comparing the optical/UV and X-ray light curves, we found that they are remarkably different during the first 500 s after the Burst Alert Telescope trigger, while they become more similar during the middle phase of the afterglow, i.e. between 2000 and 20 000 s. If we take literally the average properties of the sample, we find that the mean temporal indices observed in the optical/UV and X-rays after 500 s are consistent with a forward-shock scenario, under the assumptions that electrons are in the slow cooling regime, the external medium is of constant density and the synchrotron cooling frequency is situated between the optical/UV and X-ray observing bands. While this scenario describes well the averaged observed properties, some individual GRB afterglows require different or additional assumptions, such as the presence of late energy injection. We show that a chromatic break (a break in the X-ray light curve that is not seen in the optical) is present in the afterglows of three GRBs and demonstrate evidence for chromatic breaks in a further four GRBs. The average properties of these breaks cannot be explained in terms of the passage of the synchrotron cooling frequency through the observed bands, nor a simple change in the external density. It is difficult to reconcile chromatic breaks in terms of a single component outflow and instead, more complex jet structure or additional emission components are required. [ABSTRACT FROM AUTHOR]

Published
2011
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243. An optical gamma-ray burst catalogue with measured redshift – I. Data release of 535 gamma-ray bursts and colour evolution.

Author

Dainotti, M G, De Simone, B, Mohideen Malik, R F, Pasumarti, V, Levine, D, Saha, N, Gendre, B, Kido, D, Watson, A M, Becerra, R L, Belkin, S, Desai, S, do E. S. Pedreira, A C C, Das, U, Li, L, Oates, S R, Cenko, S B, Pozanenko, A, Volnova, A, and Hu, Y -D

Subjects
*LIGHT curves, *DATA release, *DATABASES, *REDSHIFT, *PHOTOMETRY, *GAMMA ray bursts
Abstract

We present the largest optical photometry compilation of gamma-ray bursts (GRBs) with redshifts (z). We include 64813 observations of 535 events (including upper limits) from 28 February 1997 to 18 August 2023. We also present a user-friendly web tool grbLC which allows users to visualize photometry, coordinates, redshift, host galaxy extinction, and spectral indices for each event in our database. Furthermore, we have added a Gamma-ray Coordinate Network (GCN) scraper that can be used to collect data by gathering magnitudes from the GCNs. The web tool also includes a package for uniformly investigating colour evolution. We compute the optical spectral indices for 138 GRBs, for which we have at least four filters at the same epoch in our sample, and craft a procedure to distinguish between GRBs with and without colour evolution. By providing a uniform format and repository for the optical catalogue, this web-based archive is the first step towards unifying several community efforts to gather the photometric information for all GRBs with known redshifts. This catalogue will enable population studies by providing light curves (LCs) with better coverage since we have gathered data from different ground-based locations. Consequently, these LCs can be used to train future LC reconstructions for an extended inference of the redshift. The data gathering also allows us to fill some of the orbital gaps from Swift in crucial points of the LCs, e.g. at the end of the plateau emission or where a jet break is identified. [ABSTRACT FROM AUTHOR]

Published
2024
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244. GRB 110715A: MULTIWAVELENGTH STUDY OF THE FIRST GAMMA-RAY BURST OBSERVED WITH ALMA.

Author

Sánchez-Ramírez, R., Hancock, P., Murphy, T., de Ugarte Postigo, A., Gorosabel, J., Kann, D. A., Thöne, C. C., Lundgren, A., Kamble, A., Oates, S. R., Fynbo, J. P. U., de Gregorio Monsalvo, I., Garcia-Appadoo, D., Martín, S., Kuin, N. P. M., Greiner, J., and Castro-Tirado, A. J.

Subjects
AFTERGLOW (Physics), GALAXIES, ULTRAVIOLET radiation, IONIZATION (Atomic physics), SPECTROGRAPHS
Abstract

GRB 110715A had a bright afterglow that was obscured in the optical by a high Galactic extinction. We discovered the submillimeter counterpart with APEX and followed it in radio with ATCA for over 2 months. Additional submm observations were performed with ALMA as a test of the ToO procedures during commissioning, becoming the first GRB afterglow to be detected by the observatory. UV, optical and NIR observations were performed with Swift/UVOT and 2.2 m/GROND in La Silla and X-ray data were obtained by Swift/XRT. The dataset is complemented with spectroscopic data from the VLT/X-shooter spectrograph. The absorption features present in the intermediate resolution optical/nIR spectra reveal a redshift of 0.8224 and a host galaxy environment with low ionization. We fit in the host galaxy absorption features two velocity components separated by 30 km/s, implying a host galaxy with low dynamical activity. [ABSTRACT FROM AUTHOR]

Published
2013
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245. The unusual ?-ray burst GRB 101225A from a helium star/neutron star merger at redshift 0.33.

Author

Thöne, C. C., de Ugarte Postigo, A., Fryer, C. L., Page, K. L., Gorosabel, J., Aloy, M. A., Perley, D. A., Kouveliotou, C., Janka, H. T., Mimica, P., Racusin, J. L., Krimm, H., Cummings, J., Oates, S. R., Holland, S. T., Siegel, M. H., De Pasquale, M., Sonbas, E., Im, M., and Park, W.-K.

Subjects
GAMMA ray bursts, SUPERGIANT stars, SYNCHROTRON radiation, NEUTRON stars, REDSHIFT
Abstract

Long ?-ray bursts (GRBs) are the most dramatic examples of massive stellar deaths, often associated with supernovae. They release ultra-relativistic jets, which produce non-thermal emission through synchrotron radiation as they interact with the surrounding medium. Here we report observations of the unusual GRB 101225A. Its ?-ray emission was exceptionally long-lived and was followed by a bright X-ray transient with a hot thermal component and an unusual optical counterpart. During the first 10 days, the optical emission evolved as an expanding, cooling black body, after which an additional component, consistent with a faint supernova, emerged. We estimate its redshift to be z = 0.33 by fitting the spectral-energy distribution and light curve of the optical emission with a GRB-supernova template. Deep optical observations may have revealed a faint, unresolved host galaxy. Our proposed progenitor is a merger of a helium star with a neutron star that underwent a common envelope phase, expelling its hydrogen envelope. The resulting explosion created a GRB-like jet which became thermalized by interacting with the dense, previously ejected material, thus creating the observed black body, until finally the emission from the supernova dominated. An alternative explanation is a minor body falling onto a neutron star in the Galaxy. [ABSTRACT FROM AUTHOR]

Published
2011
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246. Time-varying double-peaked emission lines following the sudden ignition of the dormant galactic nucleus AT2017bcc.

Author

Ridley, E J, Nicholl, M, Ward, C A, Blanchard, P K, Chornock, R, Fraser, M, Gomez, S, Mattila, S, Oates, S R, Pratten, G, Runnoe, J C, Schmidt, P, Alexander, K D, Gromadzki, M, Lawrence, A, Reynolds, T M, Smith, K W, Wyrzykowski, Ł, Aamer, A, and Anderson, J P

Subjects
*GALACTIC nuclei, *SUPERMASSIVE black holes, *ACTIVE galactic nuclei, *LIGHT curves, *BLACK holes
Abstract

We present a pan-chromatic study of AT2017bcc, a nuclear transient that was discovered in 2017 within the skymap of a reported burst-like gravitational-wave candidate, G274296. It was initially classified as a superluminous supernova, and then reclassified as a candidate tidal disruption event. Its optical light curve has since shown ongoing variability with a structure function consistent with that of an active galactic nucleus, however, earlier data show no variability for at least 10 yr prior to the outburst in 2017. The spectrum shows complex profiles in the broad Balmer lines: a central component with a broad-blue wing, and a boxy component with time-variable blue and red shoulders. The H α emission profile is well modelled using a circular accretion disc component, and a blue-shifted double Gaussian which may indicate a partially obscured outflow. Weak narrow lines, together with the previously flat light curve, suggest that this object represents a dormant galactic nucleus which has recently been re-activated. Our time-series modelling of the Balmer lines suggests that this is connected to a disturbance in the disc morphology, and we speculate this could involve a sudden violent event such as a tidal disruption event involving the central supermassive black hole, though this cannot be confirmed, and given an estimated black hole mass of ≳ 107–108 M⊙ instabilities in an existing disc may be more likely. Although we find that the redshifts of AT2017bcc (z  = 0.13) and G274296 (z > 0.42) are inconsistent, this event adds to the growing diversity of both nuclear transients and multimessenger contaminants. [ABSTRACT FROM AUTHOR]

Published
2024
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247. The Spanish Square Kilometre Array White Book

Author

Acosta-Pulido, J. A., Agudo, I., Alberdi, A., Alcolea, J., Alfaro, E. J., Alonso-Herrero, A., Anglada, G., Arnalte-Mur, P., Ascasibar, Y., Ascaso, B., Azulay, R., Bachiller, R., Baez-Rubio, A., Battaner, E., Blasco, J., Brook, C. B., Bujarrabal, V., Busquet, G., Caballero-Garcia, M. D., Carrasco-Gonzalez, C., Casares, J., Castro-Tirado, A. J., Colina, L., Colomer, F., Gregorio-Monsalvo, I., Del Olmo, A., Desmurs, J. -F, Diego, J. M., Dominguez-Tenreiro, R., Estalella, R., Fernandez-Soto, A., Florido, E., Font, J., Font, J. A., Fuente, A., Garcia-Benito, R., Santiago Garcia-Burillo, Garcia-Lorenzo, B., Gil Paz, A., Girart, J. M., Goicoechea, J. R., Gomez, J. F., Gonzalez-Garcia, M., Gonzalez-Martin, O., Gonzalez-Serrano, J. I., Gorgas, J., Gorosabel, J., Guijarro, A., Guirado, J. C., Hernandez-Garcia, L., Hernandez-Monteagudo, C., Herranz, D., Herrero-Illana, R., Hu, Y. -D, Huelamo, N., Huertas-Company, M., Iglesias-Paramo, J., Jeong, S., Jimenez-Serra, I., Knapen, J. H., Lineros, R. A., Lisenfeld, U., Marcaide, J. M., Marquez, I., Marti, J., Marti, J. M., Marti-Vidal, I., Martinez-Gonzalez, E., Martin-Pintado, J., Masegosa, J., Mayen-Gijon, J. M., Mezcua, M., Migliari, S., Mimica, P., Moldon, J., Morata, O., Negueruela, I., Oates, S. R., Osorio, M., Palau, A., Paredes, J. M., Perea, J., Perez-Gonzalez, P. G., Perez-Montero, E., Perez-Torres, M. A., Perucho, M., Planelles, S., Pons, J. A., Prieto, A., Quilis, V., Ramirez-Moreta, P., Ramos Almeida, C., Rea, N., Ribo, M., Rioja, M. J., Rodriguez Espinosa, J. M., Ros, E., Rubiño-Martin, J. A., Ruiz-Granados, B., Sabater, J., Sanchez, S., Sanchez-Contreras, C., Sanchez-Monge, A., Sanchez-Ramirez, R., Sintes, A. M., Solanes, J. M., Sopuerta, C. F., Tafalla, M., Tello, J. C., Tercero, B., Toribio, M. C., Torrelles, J. M., Torres, M. A. P., Usero, A., Verdes-Montenegro, L., Vidal-Garcia, A., Vielva, P., Vilchez, J., and Zhang, B. -B

Subjects
FOS: Physical sciences, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM)
Abstract

The Square Kilometre Array (SKA) is called to revolutionise essentially all areas of Astrophysics. With a collecting area of about a square kilometre, the SKA will be a transformational instrument, and its scientific potential will go beyond the interests of astronomers. Its technological challenges and huge cost requires a multinational effort, and Europe has recognised this by putting the SKA on the roadmap of the European Strategy Forum for Research Infrastructures (ESFRI). The Spanish SKA White Book is the result of the coordinated effort of 120 astronomers from 40 different research centers. The book shows the enormous scientific interest of the Spanish astronomical community in the SKA and warrants an optimum scientific exploitation of the SKA by Spanish researchers, if Spain enters the SKA project., Comment: Editors: Miguel A. Perez-Torres (Editor-in-chief), L. Verdes-Montenegro, J. C. Guirado, A. Alberdi, J. Martin-Pintado, R. Bachiller, D. Herranz, J. M. Girart, J. Gorgas, C. Hernandez-Monteagudo, S. Migliari and J. M. Rodriguez Espinosa; 289 pages, published in June 2015 by Sociedad Espa\~nola de Astronom\'ia

248. GRB 101225A: a stellar murder on Christmas Day

Author

Aloy, M., Thöne, C., Ugarte-Postigo, A., Fryer, C. L., Page, K. L., Gorosabel, J., Perley, D. A., Kouveliotou, C., Janka, H. T., Petar Mimica, Racusin, J., Krimm, H., Cummings, J., Oates, S. R., Holland, S. T., Siegel, M. H., Pasquale, M., Sonbas, E., Im, M., Park, W. -K, Kann, D. A., Guziy, S., Garcia, L., Liotente, A., Bundy, K., Choi, C., Jeong, H., Korhonen, H., Kubànek, P., Lim, J., Moskvitin, A., Muñoz-Darias, T., Pak, S., and Parrish, I.

249. GRB 130831A: The Birth and Death of a Magnetar at z=0.5

Author

Pasquale, M., Volnova, A. A., Trotter, A., Frank, N. R., Butler, N. R., Cano, Z., Littlejohns, O., Bloom, J., Prochaska, J. X., Diego, J. A., Richer, M. G., Roman-Zuniga, C., Watson, A., Moseley, S. H., Kutyrev, A., Hoette, V., Russell, R., Rumyantsev, V., Klunko, E., Burkhonov, O., Reichart, D., Haislip, J., Oates, S. R., Kann, D. A., Zhang, B., Pozanenko, A., Cucchiara, A., Troja, E., Sbarufatti, B., Steve Schulze, Page, M. J., Castro-Tirado, A. J., Gorosabel, J., Lien, A., Fox, O. D., Gonzalez, J., Gehrels, N., Zane, S., and Breeveld, A.

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