Browsing by Author "Margutti, Raffaella"

Now showing items 1-15 of 15

    • The Afterglow and Environment of the Short Grb 111117a 

      Margutti, R; Berger, Edo; Fong, W; Zauderer, B; Cenko, S. B.; Greiner, J.; Soderberg, Alicia M.; Cucchiara, A.; Rossi, A.; Klose, S.; Schmidl, S.; Milisavljevic, Danny; Sanders, Nathan Edward (IOP Publishing, 2012)
      We present multi-wavelength observations of the afterglow of the short GRB 111117A, and follow-up observations of its host galaxy. From rapid optical and radio observations we place limits of r & 25.5 mag at δt ≈ 0.55 d ...

    • Birth of a relativistic outflow in the unusual γ-ray transient Swift J164449.3+573451 

      Zauderer, Bevin Ashley; Berger, Edo; Soderberg, Alicia M.; Loeb, Abraham; Narayan, Ramesh; Frail, D. A.; Petitpas, Glen Raymond; Brunthaler, A.; Chornock, Ryan T.; Carpenter, J. M.; Pooley, G. G.; Mooley, K.; Kulkarni, S. R.; Margutti, Raffaella; Fox, D. B.; Nakar, E.; Patel, Nimesh A.; Volgenau, N. H.; Culverhouse, T. L.; Bietenholz, M. F.; Rupen, M. P.; Max-Moerbeck, W.; Readhead, A. C. S.; Richards, J.; Shepherd, M.; Storm, S.; Hull, Charles L. H. (Springer Nature, 2011)
      Active galactic nuclei, which are powered by long-term accretion onto central supermassive black holes, produce1 relativistic jets with lifetimes of at least one million years, and the observation of the birth of such a ...

    • A Decade of Short-Duration Gamma-Ray Burst Broad-Band Afterglows: Energetics, Circumburst Densities, and Jet Opening Angles 

      Fong, W.; Berger, Edo; Margutti, R; Zauderer, B (IOP Publishing, 2015)
      We present a comprehensive catalog and analysis of broad-band afterglow observations for 103 short duration gamma-ray bursts (GRBs), comprised of all short GRBs from November 2004 to March 2015 with prompt follow-up ...

    • Demographics of the Galaxies Hosting Short-Duration Gamma-Ray Bursts 

      Fong, W; Berger, Edo; Chornock, R; Margutti, R; Levan, A. J.; Tanvir, N. R.; Tunnicliffe, R. L.; Czekala, I.; Fox, D. B.; Perley, D. A.; Cenko, S. B.; Zauderer, B. A.; Laskar, T.; Persson, S. E.; Monson, A. J.; Kelson, D. D.; Birk, C.; Murphy, D.; Servillat, M.; Anglada, G. (IOP Publishing, 2013)
      We present observations of the afterglows and host galaxies of three short-duration gamma-ray bursts (GRBs): 100625A, 101219A and 110112A. We find that GRB 100625A occurred in a z = 0.452 early-type galaxy with a stellar ...

    • A Jet Break in the X-Ray Light Curve of Short Grb 111020a: Implications for Energetics and Rates 

      Fong, W; Berger, Edo; Margutti, R; Zauderer, B; Troja, E.; Czekala, Ian Philip; Chornock, R; Gehrels, N.; Sakamoto, T.; Fox, D. B.; Podsiadlowski, P. (IOP Publishing, 2012)
      We present broad-band observations of the afterglow and environment of the short GRB 111020A. An extensive X-ray light curve from Swift/XRT, XMM-Newton and Chandra, spanning ∼ 100 seconds to 10 days after the burst, reveals ...

    • Metamorphosis of Sn 2014c: Delayed Interaction Between a Hydrogen Poor Core-Collapse Supernova and a Nearby Circumstellar Shell 

      Milisavljevic, Danny; Margutti, R; Kamble, Atish; Patnaude, Daniel James; Raymond, John Charles; Eldridge, J. J.; Fong, W.; Bietenholz, M.; Challis, Peter M.; Chornock, R; Drout, Maria Rebecca; Fransson, C.; Fesen, R. A.; Grindlay, Jonathan E.; Kirshner, Robert P.; Lunnan, R; Mackey, J.; Miller, George Franklin; Parrent, Jerod T.; Sanders, Nathan Edward; Soderberg, Alicia M.; Zauderer, B (IOP Publishing, 2015)
      We present optical observations of supernova SN 2014C, which underwent an unprecedented slow metamorphosis from H-poor type Ib to H-rich type IIn over the course of one year. The observed spectroscopic evolution is consistent ...

    • Ps1-12sk Is a Peculiar Supernova From a He-Rich Progenitor System in a Brightest Cluster Galaxy Environment 

      Sanders, Nathan Edward; Soderberg, Alicia M.; Foley, R. J.; Chornock, R; Milisavljevic, Danny; Margutti, R; Drout, Maria Rebecca; Moe, M; Berger, Edo; Brown, W. R.; Lunnan, R.; Smartt, S. J.; Fraser, M.; Kotak, R.; Magill, L.; Smith, K. W.; Wright, D.; Huang, K.; Urata, Y.; Mulchaey, J. S.; Rest, A.; Sand, D. J.; Chomiuk, L.; Friedman, A. S.; Kirshner, R. P.; Marion, G. H.; Tonry, J. L.; Burgett, W. S.; Chambers, K. C.; Hodapp, K. W.; Kudritzki, R. P.; Price, P. A. (IOP Publishing, 2013)
      We report on our discovery and observations of the Pan-STARRS1 supernova (SN) PS1-12sk, a transient with properties that indicate atypical star formation in its host galaxy cluster or pose a challenge to popular progenitor ...

    • Radio Monitoring of the Tidal Disruption Event Swift j164449.3+573451. Ii. the Relativistic Jet Shuts Off and a Transition to Forward Shock X-Ray/radio Emission 

      Zauderer, B; Berger, Edo; Margutti, R; Pooley, G. G.; Sari, R.; Soderberg, Alicia M.; Brunthaler, A.; Bietenholz, M. F. (IOP Publishing, 2013)
      We present continued multi-frequency radio observations of the relativistic tidal disruption event Swift J164449.3+573451 (Sw 1644+57) extending to δt ≈ 600 d. The data were obtained with the JVLA and AMI Large Array as ...

    • Rapidly evolving and luminous transients from Pan-STARRS1 

      Drout, Maria Rebecca; Chornock, R; Soderberg, Alicia M.; Sanders, Nathan Edward; McKinnon, R.; Rest, Armin Wolfgang; Foley, R. J.; Milisavljevic, Danny; Margutti, R; Berger, Edo; Calkins, Michael Lee; Fong, W; Gezari, S.; Huber, M. E.; Kankare, E.; Kirshner, Robert P.; Leibler, C.; Lunnan, R; Mattila, S.; Marion, G. H.; Narayan, Gautham Siddharth; Riess, A. G.; Roth, K. C.; Scolnic, D.; Smartt, S. J.; Tonry, J. L.; Burgett, W. S.; Chambers, K. C.; Hodapp, K. W.; Jedicke, R.; Kaiser, N.; Magnier, E. A.; Metcalfe, N.; Morgan, J. S.; Price, P. A.; Waters, C. (IOP Publishing, 2014)
      In the past decade, several rapidly evolving transients have been discovered whose timescales and luminosities are not easily explained by traditional supernovae (SNe) models. The sample size of these objects has remained ...

    • Slowly Fading Super-Luminous Supernovae That Are Not Pair-Instability Explosions 

      Nicholl, M.; Smartt, S. J.; Jerkstrand, A.; Inserra, C.; McCrum, M.; Kotak, R.; Fraser, M.; Wright, D.; Chen, T.-W.; Smith, K.; Young, D. R.; Sim, S. A.; Valenti, S.; Howell, D. A.; Bresolin, F.; Kudritzki, R. P.; Tonry, J. L.; Huber, M. E.; Rest, A.; Pastorello, A.; Tomasella, L.; Cappellaro, E.; Benetti, S.; Mattila, S.; Kankare, E.; Kangas, T.; Leloudas, G.; Sollerman, J.; Taddia, F.; Berger, E.; Chornock, Ryan T.; Narayan, Gautham Siddharth; Stubbs, Christopher William; Foley, R. J.; Lunnan, Ragnhild; Soderberg, Alicia M.; Sanders, Nathan Edward; Milisavljevic, Danny; Margutti, Raffaella; Kirshner, Robert P.; Elias-Rosa, N.; Morales-Garoffolo, A.; Taubenberger, S.; Botticella, M. T.; Gezari, S.; Urata, Y.; Rodney, S.; Riess, A. G.; Scolnic, D.; Wood-Vasey, W. M.; Burgett, W. S.; Chambers, K.; Flewelling, H. A.; Magnier, E. A.; Kaiser, N.; Metcalfe, N.; Morgan, J.; Price, P. A.; Sweeney, W.; Waters, C. (Nature Publishing Group, 2013)
      Super-luminous supernovae that radiate more than 10\(^{44}\) ergs per second at their peak luminosity have recently been discovered in faint galaxies at redshifts of 0.1–4. Some evolve slowly, resembling models of ...

    • Sn 2012au: A Golden Link Between Superluminous Supernovae and Their Lower-Luminosity Counterparts 

      Milisavljevic, Danny; Soderberg, Alicia M.; Margutti, Raffaella; Drout, Maria Rebecca; Marion, G. Howie; Sanders, Nathan Edward; Hsiao, Eric Y.; Lunnan, Ragnhild; Chornock, Ryan; Fesen, Robert A.; Parrent, Jerod T.; Levesque, Emily M.; Berger, Edo; Foley, Ryan J.; Challis, Pete; Kirshner, Robert P.; Dittmann, Jason Adam; Bieryla, Allyson; Kamble, Atish; Chakraborti, Sayan; De Rosa, Gisella; Fausnaugh, Michael; Hainline, Kevin N.; Chen, Chien-Ting; Hickox, Ryan C.; Morrell, Nidia; Phillips, Mark M.; Stritzinger, Maximilian (IOP Publishing, 2013)
      We present optical and near-infrared observations of SN 2012au, a slow-evolving supernova (SN) with properties that suggest a link between subsets of energetic and H-poor SNe and superluminous SNe. SN 2012au exhibited ...

    • A Spectroscopic Study of Type Ibc Supernova Host Galaxies From Untargeted Surveys 

      Sanders, Nathan Edward; Soderberg, Alicia M.; Levesque, E. M.; Foley, R. J.; Chornock, R; Milisavljevic, Danny; Margutti, R; Berger, Edo; Drout, Maria Rebecca; Czekala, Ian Philip; Dittmann, Jason Adam (IOP Publishing, 2012)
      We present the first spectroscopic study of the host environments of Type Ibc supernovae (SN Ibc) discovered exclusively by untargeted SN searches. Past studies of SN Ibc host environments have been biased towards high-mass, ...

    • Toward Characterization of the Type IIP Supernova Progenitor Population: A Statistical Sample of Light Curves from Pan-STARRS1 

      Sanders, Nathan Edward; Soderberg, Alicia M.; Gezari, S.; Betancourt, M.; Chornock, R; Berger, Edo; Foley, R. J.; Challis, Peter M.; Drout, Maria Rebecca; Kirshner, Robert P.; Lunnan, R; Marion, G. H.; Margutti, R; McKinnon, R.; Milisavljevic, Danny; Narayan, G.; Rest, A.; Kankare, E.; Mattila, S.; Smartt, S. J.; Huber, M. E.; Burgett, W. S.; Draper, P.W.; Hodapp, K. W.; Kaiser, N.; Kudritzki, R. P.; Magnier, E. A.; Metcalfe, N.; Morgan, J. S.; Price, P. A.; Tonry, J. L.; Wainscoat, R. J.; Waters, C. (IOP Publishing, 2015)
      In recent years, wide-field sky surveys providing deep multiband imaging have presented a new path for indirectly characterizing the progenitor populations of core-collapse supernovae (SNe): systematic light-curve studies. ...

    • X-ray flare candidates in short gamma-ray bursts 

      Margutti, R; Chincarini, G.; Granot, J.; Guidorzi, C.; Berger, Edo; Bernardini, M. G.; Gehrels, N.; Soderberg, Alicia M.; Stamatikos, M.; Zaninoni, E. (Oxford University Press (OUP), 2011)
      We present the first systematic study of X-ray flare candidates in short gamma-ray bursts (SGRBs) exploiting the large 6-year Swift database with the aim to constrain the physical nature of such fluctuations. We find that ...

    • X-Rays from the Location of the Double-humped Transient ASASSN-15lh 

      Margutti, R; Metzger, B. D.; Chornock, R; Milisavljevic, Danny; Berger, Edo; Blanchard, Peter Kelly; Guidorzi, C.; Migliori, G.; Kamble, Atish; Lunnan, R; Nicholl, Matthew R.; Coppejans, D. L.; Dall’Osso, S.; Drout, M. R.; Perna, R.; Sbarufatti, B. (American Astronomical Society, 2017)
      We present the detection of persistent soft X-ray radiation with ${L}_{x}\sim {10}^{41}$–1042 erg s–1 at the location of the extremely luminous, double-humped transient ASASSN-15lh as revealed by Chandra and Swift. We ...