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
Kelvin-helmholtz instabilities at the sloshing cold fronts in the virgo cluster as a measure for the effective intracluster medium viscosity
Elke Roediger,Elke Roediger,Elke Roediger,Ralph P. Kraft,William R. Forman,Paul Nulsen,E. M. Churazov +6 more
TL;DR: In this article, a Spitzer-like temperature-dependent viscosity was used to suppress the Kelvin-Helmholtz instabilities of sloshing cold fronts (KHIs) in the Virgo cluster.
Chandra evidence for AGN feedback in the spiral galaxy NGC 6764
TL;DR: In this article, Chandra detection of X-ray emission spatially coincident with the kiloparsec-scale radio bubbles in the nearby (DL ~ 31 Mpc) AGN-starburst galaxy NGC 6764 was reported.
Overview of the high-definition x-ray imager instrument on the Lynx x-ray surveyor
Abraham D. Falcone,Ralph P. Kraft,Marshall W. Bautz,Jessica A. Gaskin,John A. Mulqueen,Douglas A. Swartz +5 more
TL;DR: The planned requirements, capabilities, and development status of the HDXI instrument, and associated papers in this special edition will provide further details on some specific detector options.
Powerful Radio Sources in the Southern Sky. II. A Swift X-Ray Perspective
Francesco Massaro,S. V. White,Alessandro Paggi,A. Jimenez-Gallardo,J. P. Madrid,Chiara Mazzucchelli,W. R. Forman,Alessandro Capetti,C. Leto,A. García-Pérez,C. C. Cheung,V. H. Chavushyan,N. P. H. Nesvadba,Ileana Andruchow,H. A. Peña-Herazo,E. Sani,R. Grossova,V. Reynaldi,Ralph P. Kraft,Barbara Balmaverde,Sergio A. Cellone +20 more
TL;DR: The G4Jy-3CRE catalog contains powerful radio sources mainly visible from the Southern Hemisphere. X-ray observations with Swift reveal X-ray counterparts for a majority of the G4Jy-3CRE sources, including extended X-ray emission and lobe-powered X-ray radiation.
Long-term monitoring of the dynamics and particle acceleration of knots in the jet of centaurus a
J. L. Goodger,Martin J. Hardcastle,Judith H. Croston,Ralph P. Kraft,Mark Birkinshaw,Mark Birkinshaw,Daniel A. Evans,Andrés Jordán,Paul Nulsen,Gregory R. Sivakoff,Diana M Worrall,Diana M Worrall,Nicola Brassington,William R. Forman,Marat Gilfanov,Christine Jones,Stephen S. Murray,Somak Raychaudhury,Craig L. Sarazin,Rasmus Voss,Kristin A. Woodley +20 more
TL;DR: In this article, the authors compared the observed properties with current knot formation models and particle acceleration mechanisms and found that the most likely mechanism for all the stationary knots is a collision resulting in a local shock followed by a steady state of prolonged, stable particle acceleration, and X-ray synchrotron emission.