Ralph P. Kraft
Harvard University
368 Papers
3K Citations
Ralph P. Kraft is an academic researcher from Harvard University. The author has contributed to research in topics: Galaxy & Radio galaxy. The author has an hindex of 57, co-authored 331 publications. Previous affiliations of Ralph P. Kraft include CFA Institute & Smithsonian Astrophysical Observatory.
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Papers
Probing the Hot X-Ray Gas in the Narrow-line Region of Mrk 3
TL;DR: In this article, a deconvolved X-ray image of the Markarian 3 galaxy is presented, which reveals the S-shaped morphology of the hot gas in the narrow line region (NLR).
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X-ray polarization evidence for a 200-year-old flare of Sgr A*
Frédéric Baron,E. M. Churazov,I. Khabibullin,Riccardo Ferrazzoli,L. Di Gesu,T. Barnouin,A. Di Marco,R. Middei,Alexey Vikhlinin,Enrico Costa,Paolo Soffitta,Fabio Muleri,R. A. Sunyaev,William R. Forman,Ralph P. Kraft,F. Bianchi,I. Donnarumma,P.-O. Petrucci,Teruaki Enoto,Ivan Agudo,L. A. Antonelli,Matteo Bachetti,Luca Baldini,W. H. Baumgartner,Ronaldo Bellazzini,Stephen D. Bongiorno,R. Bonino,A. Brez,Niccolò Bucciantini,Fiamma Capitanio,S. Castellano,E. Cavazzuti,Chien-Ting Chen,Stefano Ciprini,A. de Rosa,E. Del Monte,N. Di Lalla,Victor Doroshenko,Michal Dovciak,S. Ehlert,Y. Evangelista,Sergio Fabiani,Shuichi Gunji,Kiyoshi Hayashida,Jeremy S. Heyl,Adam Ingram,Wataru Iwakiri,Svetlana G. Jorstad,Philip Kaaret,Vladimir Karas,Takao Kitaguchi,Jeffrey Kolodziejczak,Henric Krawczynski,Fabio La Monaca,Luca Latronico,Ioannis Liodakis,S. Maldera,Alberto Manfreda,Andrea Marinucci,Alan P. Marscher,Herman L. Marshall,Francesco Massaro,Giorgio Matt,Ikuyuki Mitsuishi,Tsunefumi Mizuno,M. Negro,Chi-Yung Ng,Stephen L. O'Dell,Nicola Omodei,Chiara Oppedisano,Alessandro Papitto,George G. Pavlov,A. L. Peirson,M. Perri,Melissa Pesce-Rollins,M. Pilia,A. Possenti,Juri Poutanen,Simonetta Puccetti,Brian D. Ramsey,John Rankin,Ajay Ratheesh,Oliver J. Roberts,Roger W. Romani,Carmelo Sgrò,Patrick Slane,Gloria Spandre,Douglas A. Swartz,Toru Tamagawa,Fabrizio Tavecchio,Roberto Taverna,Yuzuru Tawara,Allyn F. Tennant,N. E. Thomas,Francesco Tombesi,Alessio Trois,Sergey S. Tsygankov,Roberto Turolla,Jacco Vink,Martin C. Weisskopf,Kinwah Wu,Fei Xie,Silvia Zane +102 more
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A Spectacular Bow Shock in the 11 keV Galaxy Cluster Around 3C 438
Deanna L. Emery,Akos Bogdan,Ralph P. Kraft,Felipe Andrade-Santos,William R. Forman,Martin J. Hardcastle,Christine Jones +6 more
TL;DR: In this paper, Chandra observations of the radio galaxy 3C 438 were used to identify the presence of two jumps in surface brightness and in density located at ~400 and ~800 kpc from the cluster's core.
The eROSITA View of the Abell 3391/95 Field: The Northern Clump -- The Largest Infalling Structure in the Longest Known Gas Filament Observed with eROSITA, XMM-Newton, Chandra
A. Veronica,Yuanyuan Su,Veronica Biffi,Thomas H. Reiprich,Florian Pacaud,Paul Nulsen,Ralph P. Kraft,Jeremy S. Sanders,Akos Bogdan,Melih Kara,Klaus Dolag,Jürgen Kerp,Bärbel S. Koribalski,Thomas Erben,Esra Bulbul,Efrain Gatuzz,Vittorio Ghirardini,Andrew M. Hopkins,A. Liu,K. Migkas,Tessa Vernstrom +20 more
TL;DR: In this article, the authors analyzed joint eROSITA, XMM-Newton, and Chandra observations to probe the morphological, thermal, and chemical properties of the Northern Clump from its center out to a radius of 1077 kpc.
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Frontier Fields Clusters: Deep Chandra Observations of the Complex Merger MACS J1149.6+2223
Georgiana A. Ogrean,R. J. van Weeren,Christine Jones,William R. Forman,William A. Dawson,Nathan Golovich,Felipe Andrade-Santos,S. S. Murray,S. S. Murray,Paul Nulsen,Paul Nulsen,Elke Roediger,Elke Roediger,Adi Zitrin,Esra Bulbul,Ralph P. Kraft,Andy D. Goulding,Keiichi Umetsu,Tony Mroczkowski,Annalisa Bonafede,Scott W. Randall,Jack Sayers,E. M. Churazov,Laurence P. David,Julian Merten,Megan Donahue,Brian Mason,Piero Rosati,Alexey Vikhlinin,Harald Ebeling +29 more
TL;DR: The HST Frontier Fields cluster MACS J1149.6+2223 is one of the most complex merging clusters, believed to consist of four dark matter halos as discussed by the authors.