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Browsing by Author "Blanchard, Peter K."

Browsing by Author "Blanchard, Peter K."

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  • An Embedded X-Ray Source Shines through the Aspherical AT 2018cow: Revealing the Inner Workings of the Most Luminous Fast-evolving Optical Transients 
    Margutti, R.; Metzger, B. D.; Chornock, R.; Vurm, I.; Roth, N.; Grefenstette, B. W.; Savchenko, V.; Cartier, R.; Steiner, J. F.; Terreran, G.; Margalit, B.; Migliori, G.; Milisavljevic, D.; Alexander, K. D.; Bietenholz, M.; Blanchard, Peter K.; Bozzo, E.; Brethauer, D.; Chilingarian, Igor V.; Coppejans, D. L.; Ducci, L.; Ferrigno, C.; Fong, W.; Götz, D.; Guidorzi, C.; Hajela, A.; Hurley, K.; Kuulkers, E.; Laurent, P.; Mereghetti, S.; Nicholl, M.; Patnaude, Daniel; Ubertini, P.; Banovetz, J.; Bartel, N.; Berger, Edo; Coughlin, E. R.; Eftekhari, T.; Frederiks, D. D.; Kozlova, A. V.; Laskar, T.; Svinkin, D. S.; Drout, M. R.; MacFadyen, A.; Paterson, K. (2019)
    We present the first extensive radio to ?-ray observations of a fast-rising blue optical transient, AT 2018cow, over its first ~100 days. AT 2018cow rose over a few days to a peak luminosity L <SUB>pk</SUB> ~ 4 × 10<SUP>44</SUP> ...
  • An extremely energetic supernova from a very massive star in a dense medium 
    Nicholl, Matt; Blanchard, Peter K.; Berger, Edo; Chornock, Ryan; Margutti, Raffaella; Gomez, Sebastian; Lunnan, Ragnhild; Miller, Adam A.; Fong, Wen-fai; Terreran, Giacomo; Vigna-Gómez, Alejandro; Bhirombhakdi, Kornpob; Bieryla, Allyson; Challis, Pete; Laher, Russ R.; Masci, Frank J.; Paterson, Kerry (2020)
    The interaction of a supernova with a circumstellar medium (CSM) can dramatically increase the emitted luminosity by converting kinetic energy to thermal energy. In `superluminous&#39; supernovae of type IIn-named for ...
  • Follow-up of the Neutron Star Bearing Gravitational-wave Candidate Events S190425z and S190426c with MMT and SOAR 
    Hosseinzadeh, Griffin; Cowperthwaite, P. S.; Gomez, Sebastian; Villar, Victoria Ashley; Nicholl, M.; Margutti, R.; Berger, Edo; Chornock, R.; Paterson, K.; Fong, W.; Savchenko, V.; Short, P.; Alexander, K. D.; Blanchard, Peter K.; Braga, J.; Calkins, Michael L.; Cartier, R.; Coppejans, D. L.; Eftekhari, Tarraneh; Laskar, T.; Ly, C.; Patton, Locke; Pelisoli, I.; Reichart, D. E.; Terreran, G.; Williams, Peter K. G. (2019)
    On 2019 April 25.346 and 26.640 UT the Laser Interferometer Gravitational-Wave Observatory (LIGO) and Virgo gravitational-wave (GW) observatory announced the detection of the first candidate events in Observing Run 3 that ...
  • Late-time Observations of Calcium-rich Transient SN 2019ehk Reveal a Pure Radioactive Decay Power Source 
    Jacobson-Galán, Wynn V.; Margutti, Raffaella; Kilpatrick, Charles D.; Raymond, John; Berger, Edo; Blanchard, Peter K.; Bobrick, Alexey; Foley, Ryan J.; Gomez, Sebastian; Hosseinzadeh, Griffin; Milisavljevic, Danny; Perets, Hagai; Terreran, Giacomo; Zenati, Yossef (2021)
    We present multiband Hubble Space Telescope imaging of the calcium-rich supernova (SN) SN 2019ehk at 276-389 days after explosion. These observations represent the latest B-band to near-IR photometric measurements of a ...
  • The Tidal Disruption Event AT 2018hyz II: Light-curve modelling of a partially disrupted star 
    Gomez, Sebastian; Nicholl, Matt; Short, Philip; Margutti, Raffaella; Alexander, Kate D.; Blanchard, Peter K.; Berger, Edo; Eftekhari, Tarraneh; Schulze, Steve; Anderson, Joseph; Arcavi, Iair; Chornock, Ryan; Cowperthwaite, Philip S.; Galbany, Lluís; Herzog, Laura J.; Hiramatsu, Daichi; Hosseinzadeh, Griffin; Laskar, Tanmoy; Müller Bravo, Tomás E.; Patton, Locke; Terreran, Giacomo (2020)
    AT 2018hyz (= ASASSN-18zj) is a tidal disruption event (TDE) located in the nucleus of a quiescent E+A galaxy at a redshift of z = 0.04573, first detected by the All-Sky Automated Survey for Supernovae (ASAS-SN). We present ...
  • The tidal disruption event AT2017eqx: spectroscopic evolution from hydrogen rich to poor suggests an atmosphere and outflow 
    Nicholl, M.; Blanchard, Peter K.; Berger, Edo; Gomez, S.; Margutti, R.; Alexander, K. D.; Guillochon, James; Leja, Joel; Chornock, R.; Snios, Bradford; Auchettl, K.; Bruce, A. G.; Challis, Peter; D'Orazio, Daniel J.; Drout, M. R.; Eftekhari, T.; Foley, R. J.; Graur, Or; Kilpatrick, C. D.; Lawrence, A.; Piro, A. L.; Rojas-Bravo, C.; Ross, N. P.; Short, P.; Smartt, S. J.; Smith, K. W.; Stalder, B. (2019)
    We present and analyse a new tidal disruption event (TDE), AT2017eqx at redshift z = 0.1089, discovered by Pan-STARRS and ATLAS. The position of the transient is consistent with the nucleus of its host galaxy; the spectrum ...

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