Browsing Research publications by Author "Ramirez-Ruiz, E."
Now showing items 1-20 of 21
-
Detailed radio view on two stellar explosions and their host galaxy : XRF 080109/SN 2008D and SN 2007uy in NGC 2770
van der Horst, A.J.; Kamble, A.P.; Paragi, Z.; Sage, L.J.; Pal, S.; Taylor, G.B.; Kouveliotou, C.; Granot, J.; Ramirez-Ruiz, E.; Ishwara-Chandra, C.H.; Oosterloo, T.; Wijers, R.A.M.J.; Wiersema, K.; Strom, R.G.; Bhattacharya, D.; Rol, E.; Starling, R.L.; Curran, P.; Garrett, M.A. (2011)The galaxy NGC 2770 hosted two core-collapse supernova (SN) explosions, SN 2008D and SN 2007uy, within 10 days of each other and 9 years after the first SN of the same type, SN 1999eh, was found in that galaxy. In particular, ... -
Diagnosing the Outflow from the SGR 1806-20 Giant Flare with Radio Observations
Granot, J.; Ramirez-Ruiz, E.; Taylor, G.B.; Eichler, D.; Lyubarsky, Y.E.; Wijers, R.A.M.J.; Gaensler, B.M.; Gelfand, J.D.; Kouveliotou, C. (2006) -
Evidence for a Canonical Gamma-Ray Burst Afterglow Light Curve in the Swift XRT Data
Nousek, J.A.; Kouveliotou, C.; Grupe, D.; Page, K.L.; Granot, J.; Ramirez-Ruiz, E.; Patel, S.K.; Burrows, D.N.; Mangano, V.; Barthelmy, S.; Beardmore, A.P.; Campana, S.; Capalbi, M.; Chincarini, G.; Cusumano, G.; Falcone, A.D.; Gehrels, N.; Giommi, P.; Goad, M.R.; Godet, O.; Hurkett, C.; Kennea, J.A.; Moretti, A.; O'Brien, P.T.; Osborne, J.P.; Romano, P.; Tagliaferri, G.; Wells, A.A. (2006) -
An expanding radio nebula produced by a giant flare from the magnetar SGR 1806-20
Gaensler, B.M.; Kouveliotou, C.; Gelfand, J.D.; Taylor, G.B.; Eichler, D.; Wijers, R.A.M.J.; Granot, J.; Ramirez-Ruiz, E.; Lyubarsky, Y.E.; Hunstead, R.W.; Campbell-Wilson, D.; van der Horst, A.J.; McLaughlin, M.A.; Fender, R.P.; Garrett, M.A.; Newton-McGee, K.J.; Palmer, D.M.; Gehrels, N.; Woods, P.M. (2005) -
Four epochs of VLBA/HSA observations of SN 2001em
Schinzel, F. K.; Taylor, G. B.; Stockdale, C. J.; Granot, J.; Ramirez-Ruiz, E. (American Institute of Physics (AIP), 2008)SN 2001em is a peculiar supernova (SN) which has been reclassified from Type Ib/c to IIn. We deduced the limits for its proper motion as well as the expansion velocity by analysing four epochs of VLBI observations. Our 2 ... -
The Gamma Ray Burst section of the White Paper on the Status and Future of Very High Energy Gamma Ray Astronomy: A Brief Preliminary Report
Falcone, A.D.; Williams, D.A.; Baring, M.G.; Blandford, R.; Connaughton, V.; Coppi, P.; Dermer, C.; Dingus, B.; Fryer, C.; Gehrels, N.; Granot, J.; Horan, D.; Katz, J.I.; Kuehn, K.; Meszaros, P.; Norris, J.; Parkinson, P.S.; Pe'er, A.; Ramirez-Ruiz, E.; Razzaque, S.; Wang, X.; Zhang, B. (2008) -
The Gamma Ray Burst section of the White Paper on the Status and Future of Very High Energy Gamma Ray Astronomy: A Brief Preliminary Report
Falcone, A.D.; Williams, D.A.; Baring, M.G.; Blandford, R.; Connaughton, V.; Coppi, P.; Dermer, C.; Dingus, B.; Fryer, C.; Gehrels, N.; Granot, J.; Horan, D.; Katz, J.I.; Kuehn, K.; Meszaros, P.; Norris, J.; Parkinson, P.S.; Pe'er, A.; Ramirez-Ruiz, E.; Razzaque, S.; Wang, X.; Zhang, B. (American Institute of Physics (AIP), 2008)This is a short report on the preliminary findings of the gamma ray burst (GRB) working group for the white paper on the status and future of very high energy (VHE; >50 GeV) gamma-ray astronomy. The white paper discusses ... -
A giant y-ray flare from the magnetar SGR 1806-20
Palmer, D.M.; Barthelmy, S.; Gehrels, N.; Kippen, R.M.; Cayton, T.; Kouveliotou, C.; Eichler, D.; Wijers, R.A.M.J.; Woods, P.M.; Granot, J.; Lyubarsky, Y.E.; Ramirez-Ruiz, E.; Barbier, L.; Chester, M.; Cummings, J.; Fenimore, E.E.; Finger, M.H.; Gaensler, B.M.; Hullinger, D.; Krimm, H.; Markwardt, C.B.; Nousek, J.A.; Parsons, A.; Patel, S.K.; Sakamoto, T.; Sato, G.; Suzuki, M.; Tueller, J. (2005) -
GRB 050509B: Constraints on Short Gamma Ray Burst Models
Hjorth, J.; Sollerman, J.; Gorosabel, J.; Granot, J.; Klose, S.; Kouveliotou, C.; Melinder, J.; Ramirez-Ruiz, E.; Starling, R.L.; Thomsen, B.; Anderson, M.I.; Fynbo, J.; Jensen, B.L.; Vreeswijk, P.M.; Castro Ceron, J.M.; Jakobsson, P.; Levan, A.; Pedersen, K.; Rhoads, J.E.; Tanvir, N.; Watson, D.; Wijers, R.A.M.J. (2005-09) -
GRB 080503: Implications of a Naked Short Gamma-Ray Burst Dominated by Extended Emission
Perley, D.A.; Metzger, B.D.; Granot, J.; Butler, N.R.; Sakamoto, T.; Ramirez-Ruiz, E.; Levan, A.; Bloom, J.S.; Miller, A.A.; Bunker, A.; Chen, H-W.; Filippenko, A.; Gehrels, N.; Glazebrook, K.; Hall, P.B.; Hurley, K.; Kocevski, D.; Li, W.; Lopez, S.; Norris, J.; Piro, A.L.; Poznanski, D.; Prochaska, J.X.; Quataert, E.; Tanvir, N. (2009)We report on observations of GRB 080503, a short gamma-ray burst (GRB) with very bright extended emission (about 30 times the gamma-ray fluence of the initial spike) in conjunction with a thorough comparison to other short ... -
An infrared ring around the magnetar SGR 1900+14
Wachter, S.; Ramirez-Ruiz, E.; Dwarkadas, V.V.; Kouveliotou, C.; Granot, J.; Patel, S.K.; Figer, D. (2008) -
A limit on the variation of the speed of light arising from quantum gravity effects
Abdo, A.A.; Ackermann, M.; Ajello, M.; Asano, K.; Atwood, W.B.; Axelsson, M.; Baldini, L.; Ballet, J.; Barbiellini, G.; Baring, M. G.; Bastieri, D.; Bechtol, K.; Bellazzini, R.; Berenji, B.; Bhat, P.N.; Bissaldi, E.; Bloom, E. D.; Bonamente, E.; Bonnell, J.; Borgland, A.W.; Bouvier, A.; Bregeon, J.; Brez, A.; Briggs, M.S.; Brigida, M.; Bruel, P.; Burgess, J. M.; Burnett, T. H.; Caliandro, G.A.; Cameron, R.A.; Caraveo, P.A.; Casandjian, J.M.; Cecchi, C.; Celik, Oe; Chaplin, V.; Charles, E.; Cheung, C. C.; Chiang, J.; Ciprini, S.; Claus, R.; Cohen-Tanugi, J.; Cominsky, L. R.; Connaughton, V.; Conrad, J.; Cutini, S.; Dermer, C. D.; de Angelis, A.; de Palma, F.; Digel, S.W.; Dingus, B. L.; do couto silva, E.; Drell, P.S.; Dubois, R.; Dumora, D.; Farnier, C.; Favuzzi, C.; Fegan, S. J.; Finke, J.; Fishman, G.; Focke, W.B.; Foschini, L.; Fukazawa, Y.; Funk, S.; Fusco, P.; Gargano, F.; Gasparrini, D.; Gehrels, N.; Germani, S.; Gibby, L.; Giebels, B.; Giglietto, N.; Giordano, F.; Glanzman, T.; Godfrey, G.; Granot, J.; Greiner, J.; Grenier, I.A.; Grondin, M. -H.; Grove, J. E.; Grupe, D.; Guillemot, L.; Guiriec, S.; Hanabata, Y.; Harding, A. K.; Hayashida, M.; Hays, E.; Hoversten, E. A.; Hughes, R.E.; Johannesson, G.; Johnson, A.S.; Johnson, R. P.; Johnson, W. N.; Kamae, T.; Katagiri, H.; Kataoka, J.; Kawai, N.; Kerr, M.; Kippen, R.M.; Knoedlseder, J.; Kocevski, D.; Kouveliotou, C.; Kuehn, F.; Kuss, M.; Lande, J.; Latronico, L.; Lemoine-Goumard, M.; Longo, F.; Loparco, F.; Lott, B.; Lovellette, M. N.; Lubrano, P.; Madejski, G. M.; Makeev, A.; Mazziotta, M.N.; McBreen, S.; McEnery, J.E.; McGlynn, S.; Meszaros, P.; Meurer, C.; Michelson, P.F.; Mitthumsiri, W.; Mizuno, T.; Moiseev, A.A.; Monte, C.; Monzani, M.E.; Moretti, E.; Morselli, A.; Moskalenko, I.V.; Murgia, S.; Nakamori, T.; Nolan, P.L.; Norris, J.P.; Nuss, E.; Ohno, M.; Ohsugi, T.; Omodei, N.; Orlando, E.; Ormes, J. F.; Ozaki, M.; Paciesas, W. S.; Paneque, D.; Panetta, J. H.; Parent, D.; Pelassa, V.; Pepe, M.; Pesce-Rollins, M.; Petrosian, V.; Piron, F.; Porter, T.A.; Preece, R.; Raino, S.; Ramirez-Ruiz, E.; Rando, R.; Razzano, M.; Razzaque, S.; Reimer, A.; Reimer, O.; Reposeur, T.; Ritz, S.; Rochester, L. S.; Rodriguez, A. Y.; Roth, M.; Ryde, F.; Sadrozinski, H.F.W.; Sanchez, D.; Sander, A.; Parkinson, P. M. Saz; Scargle, J. D.; Schalk, T. L.; Sgro, C.; Siskind, E.J.; Smith, D. A.; Smith, P.D.; Spandre, G.; Spinelli, P.; Stamatikos, M.; Stecker, F. W.; Strickman, M.S.; Suson, D. J.; Tajima, H.; Takahashi, H.; Takahashi, T.; Tanaka, T.; Thayer, J. B.; Thayer, J.G.; Thompson, D.J.; Tibaldo, L.; Toma, K.; Torres, D.F.; Tosti, G.; Troja, E.; Uchiyama, Y.; Uehara, T.; Usher, T.L.; van der Horst, A. J.; Vasileiou, V.; Vilchez, N.; Vitale, V.; von Kienlin, A.; Waite, A.P.; Wang, P.; Wilson-Hodge, C.; Winer, B.L.; Wood, K.S.; Wu, X. F.; Yamazaki, R.; Ylinen, T.; Ziegler, M. (2009-11-19)A cornerstone of Einstein's special relativity is Lorentz invariance-the postulate that all observers measure exactly the same speed of light in vacuum, independent of photon-energy. While special relativity assumes that ... -
Magnetar twists: Fermi/Gamma-Ray Burst Monitor detection of SGR J1550-5418
Kaneko, Y.; Gogus, E.; Kouveliotou, C.; Granot, J.; Ramirez-Ruiz, E.; van der Horst, A.J.; Watts, A.L.; Finger, M.H.; Gehrels, N.; Pe'er, A.; van der Klis, M.; von Kienlin, A.; Wachter, S.; Wilson-Hodge, C.A.; Woods, P.M. (2010)SGR J1550-5418 (previously known as AXP 1E 1547.0-5408 or PSR J1550-5418) went into three active bursting episodes in 2008 October and in 2009 January and March, emitting hundreds of typical soft gamma repeater bursts in ... -
A mildly relativistic radio jet from the otherwise normal type Ic supernova 2007gr
Paragi, Z.; Taylor, G.B.; Kouveliotou, C.; Granot, J.; Ramirez-Ruiz, E.; Bietenholz, M.; van der Horst, A.J.; Pidopryhora, Y.; van Langevelde, H.J.; Garrett, M.A.; Szomoru, A.; Argo, M.K.; Bourke, S.; Paczynski, B. (2010)Type Ic supernovae have drawn attention since 1998 owing to their sparse association with long duration γ-ray bursts (GRBs). Although the GRB central engine generates ultra-relativistic jets, no relativistic outflows have ... -
On the Afterglow of the X-ray Flash of 2003 July 23: Photometric evdence for an Off-Axis Gamma-Ray burst with an Associated Supernova
Fynbo, J.; Sollerman, J.; Hjorth, J.; Grundahl, F.; Gorosabel, J.; Weidinger, M.; Moller, P.; Jensen, B.L.; Vreeswijk, P.M.; Fransson, C.; Ramirez-Ruiz, E.; Jakobsson, P.; Jorgensen, S.F.; Vinter, C.; Andersen, M.I.; Castro Ceron, J.M.; Castro-Tirado, A.J.; Fruchter, A.S.; Greiner, J.; Kouveliotou, C.; Levan, A.; Klose, S.; Masetti, N.; Pedersen, K.; Palazzi, E.; Pian, E.; Rhoads, J.E.; Rol, E.; Sekiguchi, T.; Tanvir, N.; Tristram, P.J.; Postigo, A.; Wijers, R.A.M.J.; van den Heuvel, E.P.J. (2004-07) -
On the Progenitor of the type Ic Supernova 2002ap
Smartt, S.J.; Vreeswijk, P.M.; Ramirez-Ruiz, E.; Gilmore, G.F.; Meikle, P.; Ferguson, A.M.N.; Knapen, J. (2002-06) -
SGR J1550-5418 bursts detected with the Fermi Gamma-ray burst monitor during its most prolific activity.
van der Horst, A. J.; Kouveliotou, C.; Gorgone, N. M.; Kaneko, Y.; Baring, M. G.; Guiriec, S.; Gogus, E.; Granot, J.; Watts, A. L.; Lin, L.; Bhat, P.N.; Bissaldi, E.; Chaplin, V. L.; Finger, M. H.; Gehrels, N.; Gibby, M. H.; Giles, M. M.; Goldstein, A.; Gruber, D.; Harding, A. K.; Kaper, L.; von Kienlin, A.; van der Klis, M.; McBreen, S.; Mcenery, J.; Meegan, C. A.; Paciesas, W. S.; Pe'er, A.; Preece, R. D.; Ramirez-Ruiz, E.; Rau, A.; Wachter, S.; Wilson-Hodge, C.; Woods, P. M.; Wijers, R. A. M. J. (2012-04)We have performed detailed temporal and time-integrated spectral analysis of 286 bursts from SGR J1550-5418 detected with the Fermi Gamma-ray Burst Monitor (GBM) in 2009 January, resulting in the largest uniform sample of ... -
The Short Gamma-Ray Burst Revolution
Hjorth, J.; Levan, A.; Tanvir, N.; Starling, R.L.; Klose, S.; Kouveliotou, C.; Feron, C.; Ferrero, P.; Fruchter, A.S.; Fynbo, J.; Gorosabel, J.; Jakobsson, P.; Kann, D.A.; Pedersen, K.; Ramirez-Ruiz, E.; Sollerman, J.; Thone, C.C.; Watson, D.; Wiersema, K.; Xu, D. (2006) -
A simple test of the external shock model for the prompt emission in gamma-ray bursts
Ramirez-Ruiz, E.; Granot, J. (2007) -
Small-scale variations in the radiating surface of the GRB 011211 jet
Jakobsson, P.; Hjorth, J.; Ramirez-Ruiz, E.; Kouveliotou, C.; Pedersen, K.; Fynbo, J.; Gorosabel, J.; Watson, D.; Jensen, B.L.; Hansen, M.W.; Michelsen, R.; Andersen, M.I.; Weidinger, M.; Pedersen, H.; Grav, T. (2004)