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Institute for Advanced Study: Princeton, New Jersey, US

postdoc (Natural Sciences)
Employment
Source: Self-asserted source
Robert Penna

SUNY Polytechnic Institute: Utica, US

2023 to present | Assistant Professor (Mathematics and Physics)
Employment
Source: Self-asserted source
Robert Penna

Works (41)

A nonlocal charge for cylindrical gravitational waves

2023-11 | Preprint
ARXIV: 2311.12939
Contributors: Penna, Robert F.
Source: Self-asserted source
Robert Penna

Holography for cylindrical gravitational waves

2023-06 | Preprint
ARXIV: 2306.03150
Contributors: Penna, Robert F.
Source: Self-asserted source
Robert Penna

Gravitational Pulse Wave Scattering and the Geroch group

2022-01 | Preprint
ARXIV: 2201.07662
Contributors: Penna, Robert F.
Source: Self-asserted source
Robert Penna

Einstein–Rosen waves and the Geroch group

J. Math. Phys.
2021 | Journal article
DOI: 10.1063/5.0061929
Contributors: Penna, Robert F.
Source: Self-asserted source
Robert Penna

Twistor Actions for Integrable Systems

JHEP
2021 | Journal article
DOI: 10.1007/JHEP09(2021)140
Contributors: Penna, Robert F.
Source: Self-asserted source
Robert Penna

The Geroch Group in One Dimension

2021-12 | Preprint
ARXIV: 2112.05661
Contributors: Penna, Robert F.
Source: Self-asserted source
Robert Penna

A Lax Operator for d=2 N=2 Supergravity

2021-09 | Preprint
ARXIV: 2109.00597
Contributors: Penna, Robert F.
Source: Self-asserted source
Robert Penna

SDiff(S^2) and the orbit method

J. Math. Phys.
2020 | Journal article
DOI: 10.1063/1.5140475
Contributors: Penna, Robert F.
Source: Self-asserted source
Robert Penna

Asymptotic symmetries of three dimensional gravity and the membrane paradigm

JHEP
2019 | Journal article
DOI: 10.1007/JHEP02(2019)125
Contributors: Carrillo-González, Mariana; Penna, Robert F.
Source: Self-asserted source
Robert Penna

Kinematic space and the orbit method

JHEP
2019 | Journal article
DOI: 10.1007/JHEP07(2019)045
Contributors: Penna, Robert F.; Zukowski, Claire
Source: Self-asserted source
Robert Penna

BMS$_3$ invariant fluid dynamics at null infinity

Class. Quant. Grav.
2018 | Journal article
DOI: 10.1088/1361-6382/aaa3aa
Contributors: Penna, Robert F.
Source: Self-asserted source
Robert Penna

Near-horizon Carroll symmetry and black hole Love numbers

2018-12 | Preprint
Contributors: Penna, Robert F.
Source: Self-asserted source
Robert Penna

Near-horizon BMS symmetries as fluid symmetries

JHEP
2017 | Journal article
DOI: 10.1007/JHEP10(2017)049
Contributors: Penna, Robert F.
Source: Self-asserted source
Robert Penna

Strong-field tidal distortions of rotating black holes. III. Embeddings in hyperbolic three-space

Phys. Rev. D
2017 | Journal article
DOI: 10.1103/PhysRevD.96.064030
Contributors: Penna, Robert F.; Hughes, Scott A.; O'Sullivan, Stephen
Source: Self-asserted source
Robert Penna

BMS invariance and the membrane paradigm

JHEP
2016 | Journal article
DOI: 10.1007/JHEP03(2016)023
Contributors: Penna, Robert F.
Source: Self-asserted source
Robert Penna

Black hole jet power from impedance matching

Phys. Rev. D
2015 | Journal article
DOI: 10.1103/PhysRevD.92.084017
Contributors: Penna, Robert F.
Source: Self-asserted source
Robert Penna

Energy extraction from boosted black holes: Penrose process, jets, and the membrane at infinity

Phys. Rev. D
2015 | Journal article
DOI: 10.1103/PhysRevD.91.084044
Contributors: Penna, Robert F.
Source: Self-asserted source
Robert Penna

Are entangled particles connected by wormholes? Evidence for the ER=EPR conjecture from entropy inequalities

Phys. Rev. D
2014 | Journal article
DOI: 10.1103/PhysRevD.89.066001
Contributors: Gharibyan, Hrant; Penna, Robert F.
Source: Self-asserted source
Robert Penna

Black hole Meissner effect and Blandford-Znajek jets

Phys. Rev. D
2014 | Journal article
DOI: 10.1103/PhysRevD.89.104057
Contributors: Penna, Robert F.
Source: Self-asserted source
Robert Penna

Black hole Meissner effect and entanglement

Phys. Rev. D
2014 | Journal article
DOI: 10.1103/PhysRevD.90.043003
Contributors: Penna, Robert F.
Source: Self-asserted source
Robert Penna

MITEoR: a scalable interferometer for precision 21 cm cosmology

Mon. Not. Roy. Astron. Soc.
2014 | Journal article
DOI: 10.1093/mnras/stu1773
Contributors: Zheng, Haoxuan; others
Source: Self-asserted source
Robert Penna

A new equilibrium torus solution and GRMHD initial conditions

Astron. Astrophys.
2013 | Journal article
DOI: 10.1051/0004-6361/201219666
Contributors: Penna, Robert F.; Kulkarni, Akshay; Narayan, Ramesh
Source: Self-asserted source
Robert Penna

Constraining the Accretion Flow in Sgr A* by General Relativistic Dynamical and Polarized Radiative Modeling

IAU Symp.
2013 | Journal article
DOI: 10.1017/S1743921312020157
Contributors: Shcherbakov, Roman V.; Penna, Robert F.; McKinney, Jonathan C.; Zhang, Chengmin; Belloni, Tomaso; Méndez, Mariano; Zhang, Shuangnan
Source: Self-asserted source
Robert Penna

Energy, momentum and mass outflows and feedback from thick accretion discs around rotating black holes

Mon. Not. Roy. Astron. Soc.
2013 | Journal article
DOI: 10.1093/mnras/stt1881
Contributors: Sadowski, A.; Narayan, R.; Penna, R.; Zhu, Y.
Source: Self-asserted source
Robert Penna

General Relativistic Magnetohydrodynamic Simulations of Blandford-Znajek Jets and the Membrane Paradigm

Mon. Not. Roy. Astron. Soc.
2013 | Journal article
DOI: 10.1093/mnras/stt1860
Contributors: Penna, Robert F.; Narayan, Ramesh; Sadowski, Aleksander
Source: Self-asserted source
Robert Penna

The Shakura-Sunyaev Viscosity Prescription with Variable alpha(r)

Mon. Not. Roy. Astron. Soc.
2013 | Journal article
DOI: 10.1093/mnras/sts185
Contributors: Penna, Robert F.; Sadowski, Aleksander; Kulkarni, Akshay K.; Narayan, Ramesh
Source: Self-asserted source
Robert Penna

Apparent motion of a spherical shell collapsing onto a black hole

Phys. Lett. B
2012 | Journal article
DOI: 10.1016/j.physletb.2011.12.038
Contributors: Penna, Robert F.
Source: Self-asserted source
Robert Penna

GRMHD Simulations of Magnetized Advection-Dominated Accretion on a Non-Spinning Black Hole: Role of Outflows

Mon. Not. Roy. Astron. Soc.
2012 | Journal article
DOI: 10.1111/j.1365-2966.2012.22002.x
Contributors: Narayan, Ramesh; Sadowski, Aleksander; Penna, Robert F.; Kulkarni, Akshay K.
Source: Self-asserted source
Robert Penna

Sagittarius A* Accretion Flow and Black Hole Parameters from General Relativistic Dynamical and Polarized Radiative Modeling

Astrophys. J.
2012 | Journal article
DOI: 10.1088/0004-637X/755/2/133
Contributors: Shcherbakov, Roman V.; Penna, Robert F.; McKinney, Jonathan C.
Source: Self-asserted source
Robert Penna

The Eye of the Storm: Light from the Inner Plunging Region of Black Hole Accretion Discs

Mon. Not. Roy. Astron. Soc.
2012 | Journal article
DOI: 10.1111/j.1365-2966.2012.21181.x
Contributors: Zhu, Yucong; Davis, Shane W.; Narayan, Ramesh; Kulkarni, Akshay K.; Penna, Robert F.; McClintock, Jeffrey E.
Source: Self-asserted source
Robert Penna

Thin Disk Theory with a Non-Zero Torque Boundary Condition and Comparisons with Simulations

Mon. Not. Roy. Astron. Soc.
2012 | Journal article
DOI: 10.1111/j.1365-2966.2011.20084.x
Contributors: Penna, Robert F.; Sadowski, Aleksander; McKinney, Jonathan C.
Source: Self-asserted source
Robert Penna

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

ASP Conf. Ser.
2011 | Journal article
Contributors: Shcherbakov, Roman V.; Penna, Robert F.; Morris, Mark R.; Wang, Daniel Q.; Yuan, Feng
Source: Self-asserted source
Robert Penna

Hidden symmetries of the Kerr metric and Goldstones theorem

Class. Quant. Grav.
2011 | Journal article
DOI: 10.1088/0264-9381/28/24/245015
Contributors: Penna, Robert F.
Source: Self-asserted source
Robert Penna

Measuring Black Hole Spin by the Continuum-Fitting Method: Effect of Deviations from the Novikov-Thorne Disc Model

Mon. Not. Roy. Astron. Soc.
2011 | Journal article
DOI: 10.1111/j.1365-2966.2011.18446.x
Contributors: Kulkarni, Akshay K.; Penna, Robert F.; Shcherbakov, Roman V.; Steiner, James F.; Narayan, Ramesh; Sadowski, Aleksander; Zhu, Yucong; McClintock, Jeffrey E.; Davis, Shane W.; McKinney, Jonathan C.
Source: Self-asserted source
Robert Penna

Measuring the Spins of Accreting Black Holes

Class. Quant. Grav.
2011 | Journal article
DOI: 10.1088/0264-9381/28/11/114009
Contributors: McClintock, Jeffrey E.; Narayan, Ramesh; Davis, Shane W.; Gou, Lijun; Kulkarni, Akshay; Orosz, Jerome A.; Penna, Robert F.; Remillard, Ronald A.; Steiner, James F.; Marolf, Donald et al.
Source: Self-asserted source
Robert Penna

Measuring the Spins of Stellar Black Holes: A Progress Report

AIP Conf. Proc.
2010 | Journal article
DOI: 10.1063/1.3475156
Contributors: McClintock, J. E.; Narayan, R.; Gou, L.; Penna, R. F.; Steiner, J. A.
Source: Self-asserted source
Robert Penna

Simulations of Magnetized Disks Around Black Holes: Effects of Black Hole Spin, Disk Thickness, and Magnetic Field Geometry

Mon. Not. Roy. Astron. Soc.
2010 | Journal article
DOI: 10.1111/j.1365-2966.2010.17170.x
Contributors: Penna, Robert F.; McKinney, Jonathan C.; Narayan, Ramesh; Tchekhovskoy, Alexander; Shafee, Rebecca; McClintock, Jeffrey E.
Source: Self-asserted source
Robert Penna

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

Mon. Not. Roy. Astron. Soc.
2009 | Journal article
DOI: 10.1111/j.1365-2966.2009.14715.x
Contributors: Croston, J. H.; others
Source: Self-asserted source
Robert Penna

Empirical relation between angular momentum transport and thermal-to-magnetic pressure ratio in shearing box simulations

New Astron.
2008 | Journal article
DOI: 10.1016/j.newast.2007.10.004
Contributors: Blackman, Eric G.; Penna, Robert F.; Varniere, Peggy
Source: Self-asserted source
Robert Penna

A Chandra Study of the Lobe/ISM Interactions Around the Inner Radio Lobes of Centaurus A: Constraints on the Temperature Structure and Transport Processes

Astrophys. J.
2007 | Journal article
DOI: 10.1086/519830
Contributors: Kraft, R. P.; Nulsen, P. E. J.; Birkinshaw, M.; Worrall, D. M.; Penna, R. F.; Forman, W. R.; Hardcastle, M. J.; Jones, C.; Murray, S. S.
Source: Self-asserted source
Robert Penna

The Decay of interplanetary coronal mass ejections and Forbush decrease recovery times

J. Geophys. Res.
2005 | Journal article
DOI: 10.1029/2004JA010912
Contributors: Penna, Robert F.; Quillen, Alice C.
Source: Self-asserted source
Robert Penna
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