Lenny Paritsky

Advanced Radar Sounding and Imaging on SmallSat and CubeSat Missions Across the Solar System with Vector Sensor Antennas

Jack R. Holt, S. Nerozzi, Mary Knapp, Lenny Paritsky et autres

Introduction: Orbital radar sounding and imaging are unique tools in planetary studies, with an extensive array of possible targets. Flight-proven instruments are currently limited to a few examples based on conventional technologies with inherent limitations in terms of mass/power/volume and performance. For …

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AERO: Remote Sensing of Auroral Radio Emissions from a Small Satellite Using Electromagnetic Vector Sensors

P. J. Erickson, Mary Knapp, Lenny Paritsky, Frank D. Lind et autres

Earth's aurora has a complexity and richness in both energetics and spatial/temporal structure that is of intense interest for community understanding of space physics. Auroral radio emissions from the ionosphere in the LF to HF range (<= 5 MHz) form a powerful …

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Debris Plasma Density Perturbations as Seen Through a Modern Collective Thomson Scatter Radar Processing Chain

J. Brent Parham, Jason Li, Mark E. Dickson, Greg Ginet et autres

In January 2023 MIT’s LL and Haystack Observatory performed a joint experiment to understand possible signatures of space debris in the ionosphere, and we previously reported on signatures of the objects that were successfully identified. This work was initiated by the United …

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The Black Hole Explorer: astrophysics mission concept engineering study report

Eliad Peretz, Peter Kurczynski, Michael D. Johnson, Janice Houston et autres

The Black Hole Explorer (BHEX) mission will enable the study of the fine photon ring structure, aiming to reveal the clear universal signatures of multiple photon orbits and true tests of general relativity, while also giving astronomers access to a much greater …

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The Black Hole Explorer: motivation and vision

Michael D. Johnson, Kazunori Akiyama, Rebecca Baturin, Bryan Bilyeu et autres

We present the Black Hole Explorer (BHEX), a mission that will produce the sharpest images in the history of astronomy by extending submillimeter Very-Long-Baseline Interferometry (VLBI) to space. BHEX will discover and measure the bright and narrow “photon ring” that is predicted …

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The Black Hole Explorer: Motivation and Vision

Michael D. Johnson, Kazunori Akiyama, Rebecca Baturin, Bryan Bilyeu et autres

We present the Black Hole Explorer (BHEX), a mission that will produce the sharpest images in the history of astronomy by extending submillimeter Very-Long-Baseline Interferometry (VLBI) to space. BHEX will discover and measure the bright and narrow "photon ring" that is predicted …

Great Observatory for Long Wavelengths (GO-LoW) NIAC Phase I Final Report

Mary Knapp, Lenny Paritsky, Ekaterina Kononov, Melodie M. Kao

The low-frequency sky below $\sim$15 MHz (20 m) is obscured by the Earth's ionosphere, the layer of charged particles above the neutral atmosphere. Single spacecraft have made measurements in this band, but cannot achieve high or even moderate angular resolution because a …

Development of the Deployable HF Vector Sensor for the AERO-VISTA Spacecraft

Mark Silver, Alai Lopez, Daniel Howe, E A. Thompson et autres

The Auroral Emissions Radio Observer (AERO) and Vector Interferometry Space Technology using AERO (VISTA) CubeSat missions will use two identical 6U CubeSats developed to measure HF auroral emissions from Low Earth Orbit for NASA’s Space Mission Directorate (SMD) for Heliophysics. Each CubeSat …

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SmallSat Constellations for Active and Passive Sensing in the Heliosphere

Mary Knapp, John Swoboda, Frank D. Lind, Lenny Paritsky et autres

Whitepaper #211 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: space weather applications; basic research. Additional topics: planetary magnetospheres; space weather research/applications/operations pipeline; inner heliosphere; […]

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The Event Horizon Explorer mission concept

Peter Kurczynski, Michael D. Johnson, Sheperd S. Doeleman, Kari Haworth et autres

The Event Horizon Explorer (EHE) is a mission concept to extend the Event Horizon Telescope via an additional space-based node. We provide highlights and overview of a concept study to explore the feasibility of such a mission. We present science goals and …

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Versatile Structural Radiation Shielding and Thermal Insulation through Additive Manufacturing

J.S. Wrobel, Robert Hoyt, Jesse Cushing, Mark Jaster et autres

The use of Commercial Off-The-Shelf (COTS) components in SmallSat platforms such as CubeSats and nanosatellites can enable operational mission capabilities within affordable program costs, with the caveat that these components must either be isolated from the space environment or be expected to …

Development of a CubeSat Water-Electrolysis Propulsion System

Lenny Paritsky, J. S. Wrobel, Todd Moser, Jeffrey Slostad et autres

Over a decade ago the development of the CubeSat standard and the P-POD deployer ushered in a new era of low cost technology demonstration and science missions. Up to now, however, CubeSats have been limited to missions requiring low power levels and …