C
Chris Ashall
Researcher at Florida State University
Publications - 141
Citations - 4896
Chris Ashall is an academic researcher from Florida State University. The author has contributed to research in topics: Supernova & Light curve. The author has an hindex of 31, co-authored 108 publications receiving 3819 citations. Previous affiliations of Chris Ashall include Astrophysics Research Institute & Florida International University.
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Journal ArticleDOI
A kilonova as the electromagnetic counterpart to a gravitational-wave source
Stephen J. Smartt,Ting-Wan Chen,Anders Jerkstrand,Michael W. Coughlin,Erkki Kankare,Stuart A. Sim,Morgan Fraser,Cosimo Inserra,Kate Maguire,K. C. Chambers,M. E. Huber,Thomas Krühler,Giorgos Leloudas,M. R. Magee,Luke J. Shingles,K. W. Smith,David Young,John L. Tonry,Rubina Kotak,Avishay Gal-Yam,J. D. Lyman,D. Homan,C. Agliozzo,C. Agliozzo,Joseph P. Anderson,C. Angus,Chris Ashall,Cristina Barbarino,Franz E. Bauer,Franz E. Bauer,Franz E. Bauer,Marco Berton,Marco Berton,M. T. Botticella,Mattia Bulla,J. Bulger,Giacomo Cannizzaro,Giacomo Cannizzaro,Zach Cano,Régis Cartier,Aleksandar Cikota,P. Clark,A. De Cia,M. Della Valle,Larry Denneau,M. Dennefeld,Luc Dessart,Georgios Dimitriadis,Nancy Elias-Rosa,R. E. Firth,H. Flewelling,A. Flörs,A. Franckowiak,C. Frohmaier,Lluís Galbany,Santiago González-Gaitán,Jochen Greiner,Mariusz Gromadzki,A. Nicuesa Guelbenzu,Claudia P. Gutiérrez,A. Hamanowicz,A. Hamanowicz,Lorraine Hanlon,Jussi Harmanen,Kasper E. Heintz,Kasper E. Heintz,A. Heinze,M.-S. Hernandez,Simon Hodgkin,Isobel Hook,Luca Izzo,Phil A. James,Peter G. Jonker,Peter G. Jonker,Wolfgang Kerzendorf,S. Klose,Z. Kostrzewa-Rutkowska,Z. Kostrzewa-Rutkowska,Marek Kowalski,Markus Kromer,Markus Kromer,Hanindyo Kuncarayakti,Andy Lawrence,T. Lowe,Eugene A. Magnier,Ilan Manulis,Antonio Martin-Carrillo,Seppo Mattila,O. McBrien,André Müller,Jakob Nordin,D. O'Neill,F. Onori,F. Onori,J. Palmerio,Andrea Pastorello,Ferdinando Patat,G. Pignata,G. Pignata,Ph. Podsiadlowski,Maria Letizia Pumo,Maria Letizia Pumo,S. J. Prentice,Arne Rau,A. Razza,A. Razza,A. Rest,A. Rest,T. M. Reynolds,Rupak Roy,Rupak Roy,Ashley J. Ruiter,Ashley J. Ruiter,Krzysztof A. Rybicki,Lána Salmon,Patricia Schady,A. S. B. Schultz,T. Schweyer,Ivo R. Seitenzahl,Ivo R. Seitenzahl,M. Smith,Jesper Sollerman,B. Stalder,Christopher W. Stubbs,Mark Sullivan,Helene Szegedi,Francesco Taddia,Stefan Taubenberger,Giacomo Terreran,Giacomo Terreran,B. van Soelen,J. Vos,Richard J. Wainscoat,Nicholas A. Walton,Christopher Waters,H. Weiland,Mark Willman,P. Wiseman,Darryl Wright,Łukasz Wyrzykowski,O. Yaron +140 more
TL;DR: Observations and physical modelling of a rapidly fading electromagnetic transient in the galaxy NGC 4993, which is spatially coincident with GW170817, indicate that neutron-star mergers produce gravitational waves and radioactively powered kilonovae, and are a nucleosynthetic source of the r-process elements.
Journal ArticleDOI
A very luminous magnetar-powered supernova associated with an ultra-long γ-ray burst
Jochen Greiner,Paolo A. Mazzali,D. Alexander Kann,Thomas Krühler,Elena Pian,S. J. Prentice,Felipe Olivares E.,Andrea Rossi,Sylvio Klose,Stefan Taubenberger,Fabian Knust,P. M. J. Afonso,Chris Ashall,J. Bolmer,C. Delvaux,Roland Diehl,Jonathan Elliott,R. Filgas,Johan P. U. Fynbo,J. F. Graham,Ana Nicuesa Guelbenzu,Shiho Kobayashi,Giorgos Leloudas,Sandra Savaglio,Patricia Schady,S. Schmidl,Tassilo Schweyer,V. Sudilovsky,M. Tanga,Adria C. Updike,Hendrik van Eerten,Karla Varela +31 more
TL;DR: It is reported that a supernova was associated with the ultra-long-duration γ-ray burst GRB 111209A, at a redshift z of 0.677, and this supernova is more than three times more luminous than type Ic supernovae associated with long-duration μ-ray bursts, and its spectrum is distinctly different.
Journal ArticleDOI
PESSTO: survey description and products from the first data release by the Public ESO Spectroscopic Survey of Transient Objects
Stephen J. Smartt,Stefano Valenti,Stefano Valenti,Morgan Fraser,Cosimo Inserra,David Young,Mark Sullivan,Andrea Pastorello,Stefano Benetti,Avishay Gal-Yam,Cristina Knapic,Marco Molinaro,Riccardo Smareglia,K. W. Smith,S. Taubenberger,O. Yaron,Joseph P. Anderson,Chris Ashall,C. Balland,C. Baltay,C. Barbarino,Franz E. Bauer,Franz E. Bauer,Franz E. Bauer,S. Baumont,D. Bersier,Nadejda Blagorodnova,S. Bongard,M. T. Botticella,F. Bufano,Mattia Bulla,Enrico Cappellaro,Heather Campbell,F. Cellier-Holzem,Ting-Wan Chen,M. J. Childress,Alejandro Clocchiatti,Alejandro Clocchiatti,Carlos Contreras,Carlos Contreras,Massimo Dall'Ora,John Danziger,T. de Jaeger,A. De Cia,M. Della Valle,Michel Dennefeld,Nancy Elias-Rosa,N. Elman,U. Feindt,U. Feindt,M. Fleury,E. E. E. Gall,Santiago González-Gaitán,Lluís Galbany,A. Morales Garoffolo,Laura Greggio,L. Le Guillou,Stephan Hachinger,E. Hadjiyska,P. E. Hage,Wolfgang Hillebrandt,Simon Hodgkin,Eric Hsiao,Eric Hsiao,Phil A. James,Anders Jerkstrand,Tuomas Kangas,Erkki Kankare,Rubina Kotak,Markus Kromer,Hanindyo Kuncarayakti,Giorgos Leloudas,Giorgos Leloudas,Peter Lundqvist,J. D. Lyman,Isobel Hook,Kate Maguire,Ilan Manulis,S. Margheim,Seppo Mattila,Justyn R. Maund,Paolo A. Mazzali,M. McCrum,Ryan McKinnon,M. E. Moreno-Raya,Matt Nicholl,Peter Nugent,Peter Nugent,Reynald Pain,Giuliano Pignata,Giuliano Pignata,Mark M. Phillips,J. Polshaw,Maria Letizia Pumo,David Rabinowitz,E. Reilly,C. Romero-Canizales,C. Romero-Canizales,Richard Scalzo,Brian P. Schmidt,Steve Schulze,Steve Schulze,Stuart A. Sim,Jesper Sollerman,Francesco Taddia,Leonardo Tartaglia,Giacomo Terreran,L. Tomasella,Massimo Turatto,Emma S. Walker,Nicholas A. Walton,L. Wyrzykowski,L. Wyrzykowski,Fang Yuan,Luca Zampieri +114 more
TL;DR: The first data release (SSDR1) contains flux calibrated spectra from the first year (April 2012-2013), and a total of 221 confirmed supernovae were classified, and they released calibrated optical spectra and classifications publicly within 24 h of the data being taken as mentioned in this paper.
Journal ArticleDOI
PESSTO : survey description and products from the first data release by the Public ESO Spectroscopic Survey of Transient Objects
Stephen J. Smartt,Stefano Valenti,Morgan Fraser,Cosimo Inserra,David Young,Mark Sullivan,Andrea Pastorello,Stefano Benetti,Avishay Gal-Yam,Cristina Knapic,Marco Molinaro,Riccardo Smareglia,K. W. Smith,S. Taubenberger,O. Yaron,Joseph P. Anderson,Chris Ashall,C. Balland,C. Baltay,C. Barbarino,Franz E. Bauer,S. Baumont,D. Bersier,Nadejda Blagorodnova,S. Bongard,M. T. Botticella,F. Bufano,Mattia Bulla,Enrico Cappellaro,H. Campbell,F. Cellier-Holzem,Ting-Wan Chen,M. J. Childress,Alejandro Clocchiatti,C. Contreras,M. Dall' Ora,John Danziger,T. de Jaeger,A. De Cia,M. Della Valle,Michel Dennefeld,Nancy Elias-Rosa,N. Elman,Ulrich Feindt,M. Fleury,E. E. E. Gall,Santiago González-Gaitán,Lluís Galbany,A. Morales Garoffolo,Laura Greggio,L. Le Guillou,S. Hachinger,E. Hadjiyska,P. E. Hage,Wolfgang Hillebrandt,S. T. Hodgkin,Eric Hsiao,Phil A. James,Anders Jerkstrand,Tuomas Kangas,Erkki Kankare,Rubina Kotak,Markus Kromer,Hanindyo Kuncarayakti,Giorgos Leloudas,Peter Lundqvist,J. D. Lyman,Isobel Hook,Kate Maguire,Ilan Manulis,S. Margheim,Seppo Mattila,Justyn R. Maund,Paolo A. Mazzali,M. McCrum,Ryan McKinnon,M. E. Moreno-Raya,Matt Nicholl,Peter Nugent,R. Pain,M. M. Phillips,Giuliano Pignata,J. Polshaw,Maria Letizia Pumo,David Rabinowitz,E. Reilly,C. Romero-Canizales,Richard Scalzo,Brian P. Schmidt,Steve Schulze,Stuart A. Sim,Jesper Sollerman,Francesco Taddia,Leonardo Tartaglia,Giacomo Terreran,L. Tomasella,Massimo Turatto,E. S. Walker,Nicholas A. Walton,L. Wyrzykowski,Fang Yuan,Luca Zampieri +101 more
TL;DR: In this article, the authors describe the data reduction strategy and data products which are publicly available through the ESO archive as the Spectroscopic Survey Data Release 1 (SSDR1).
Journal ArticleDOI
The superluminous transient ASASSN-15lh as a tidal disruption event from a Kerr black hole
Giorgos Leloudas,Giorgos Leloudas,Morgan Fraser,Nicholas C. Stone,S. van Velzen,Peter G. Jonker,Peter G. Jonker,Iair Arcavi,Iair Arcavi,Christoffer Fremling,Justyn R. Maund,Stephen J. Smartt,T. Krìhler,James Miller-Jones,P. M. Vreeswijk,Avishay Gal-Yam,Paolo A. Mazzali,Paolo A. Mazzali,A. De Cia,D. A. Howell,D. A. Howell,Cosimo Inserra,Ferdinando Patat,A. de Ugarte Postigo,A. de Ugarte Postigo,O. Yaron,Chris Ashall,I. Bar,Heather Campbell,Heather Campbell,Ting-Wan Chen,M. Childress,Nancy Elias-Rosa,Jussi Harmanen,Griffin Hosseinzadeh,Griffin Hosseinzadeh,Joel Johansson,Tuomas Kangas,Erkki Kankare,S. Kim,Hanindyo Kuncarayakti,Hanindyo Kuncarayakti,J. D. Lyman,M. R. Magee,Kate Maguire,D. Malesani,Seppo Mattila,Seppo Mattila,Curtis McCully,Curtis McCully,Matt Nicholl,S. J. Prentice,C. Romero-Canizales,C. Romero-Canizales,Steve Schulze,Steve Schulze,K. W. Smith,Jesper Sollerman,Mark Sullivan,Brad E. Tucker,S. Valenti,John C Wheeler,David Young +62 more
TL;DR: In this paper, the authors show that a star with the same mass as the Sun could be disrupted outside the event horizon if the black hole were spinning rapidly, and the rapid spin and high black hole mass can explain the high luminosity of this event.