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R. Penna

42 papers hereh-index 212.3k citations59 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • sole author17
  • first author8
  • middle author11
  • last author3

Across the 39 of 42 papers where every author was matched, so the position is known.

fields
  • astro-ph.HE18
  • hep-th14
  • gr-qc5
  • astro-ph3
  • astro-ph.IM2
same name
  • R. Penna — 2 papers, h 5

Either other researchers who publish under this name, or the same person where the external sources have not merged their records.

identity via Semantic Scholar / OpenAlex

activity
20042026
most citedGRMHD Simulations of Magnetized Advection Dominated Accretion on a Non-Spinning Black Hole: Role of Outflows

504 citations · 2.7k across the 41 of their papers we have counts for

collaborators
Showing 2009Show all

3 papers · 1 filter

astro-ph.HE2009★ 2 cited

Constraining the Accretion Flow in Sgr A* by GR Dynamical and Radiative Modeling

Roman V. Shcherbakov, Robert F. Penna

We present the combination of dynamical accretion model based on 3D GRMHD simulations and general relativistic (GR) polarized radiative transfer. We write down the formalism of and…

astro-ph.HE2009★ 20 cited

Measuring the Spins of Stellar Black Holes: A Progress Report

J. E. McClintock, R. Narayan, L. Gou +3

We use the Novikov-Thorne thin disk model to fit the thermal continuum X-ray spectra of black hole X-ray binaries, and thereby extract the dimensionless spin parameter a* = a/M of…

astro-ph.HE2009★ 147 cited

High-energy particle acceleration at the radio-lobe shock of Centaurus A

J. H. Croston, R. P. Kraft, M. J. Hardcastle +19

We present new results on the shock around the southwest radio lobe of Centaurus A using data from the Chandra Very Large Programme observations. The X-ray spectrum of the emission…

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Not affiliated with arXiv. Researcher data from Semantic Scholar (ODC-BY) and OpenAlex.