Nolan Matthews
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View article: Stellar intensity interferometry in the photon-counting regime
Stellar intensity interferometry in the photon-counting regime Open
Stellar intensity interferometry consists in measuring the correlation of the light intensity fluctuations at two telescopes observing the same star. The amplitude of the correlation is directly related to the luminosity distribution of th…
View article: Demonstrations of real-time precision optical time synchronization in a true three-node architecture<sup>*</sup>
Demonstrations of real-time precision optical time synchronization in a true three-node architecture<sup>*</sup> Open
Multi-node optical clock networks will enable future studies of fundamental physics and enable applications in quantum and classical communications as well as navigation and geodesy. We implement the first ever multi-node optical clock net…
View article: Pupil plane intensity interferometry with imaging air Cherenkov telescopes
Pupil plane intensity interferometry with imaging air Cherenkov telescopes Open
The Intensity Interferometry Imaging Telescope (I3T) concept illustrated how a single imaging air Cherenkov telescope (IACT) can be transformed into a multi-element intensity interferometer. This is achieved by segmenting the light collect…
View article: Measurement of the photosphere oblateness of $γ$ Cassiopeiae via Stellar Intensity Interferometry with the VERITAS Observatory
Measurement of the photosphere oblateness of $γ$ Cassiopeiae via Stellar Intensity Interferometry with the VERITAS Observatory Open
We use the stellar intensity interferometry system implemented with the Very Energetic Radiation Imaging Telescope Array System (VERITAS) at Fred Lawrence Whipple Observatory (FLWO) as a light collector to obtain measurements of the rapid …
View article: An Angular Diameter Measurement of β UMa via Stellar Intensity Interferometry with the VERITAS Observatory
An Angular Diameter Measurement of β UMa via Stellar Intensity Interferometry with the VERITAS Observatory Open
We use the Very Energetic Radiation Imaging telescope Array System (VERITAS) imaging air Cherenkov telescope array to obtain the first measured angular diameter of β UMa at visual wavelengths using stellar intensity interferometry (SII) an…
View article: Demonstration of Real-Time Precision Optical Time Synchronization in a True Three-Node Architecture
Demonstration of Real-Time Precision Optical Time Synchronization in a True Three-Node Architecture Open
Multi-node optical clock networks will enable future studies of fundamental physics and enable applications in quantum and classical communications as well as navigation and geodesy. We implement the first ever multi-node optical clock net…
View article: An Angular Diameter Measurement of $β$ UMa via Stellar Intensity Interferometry with the VERITAS Observatory
An Angular Diameter Measurement of $β$ UMa via Stellar Intensity Interferometry with the VERITAS Observatory Open
We use the VERITAS imaging air Cherenkov Telescope (IACT) array to obtain the first measured angular diameter of $β$ UMa at visual wavelengths using stellar intensity interferometry (SII) and independently constrain the limb-darkened angul…
View article: Demonstration of Real-Time Precision Optical Time Synchronization in a True Three-Node Architecture
Demonstration of Real-Time Precision Optical Time Synchronization in a True Three-Node Architecture Open
Multi-node optical clock networks will enable future studies of fundamental physics and enable applications in quantum and classical communications as well as navigation and geodesy. We implement the first ever multi-node optical clock net…
View article: Auger@TA: An Auger-like surface detector micro-array embedded within the Telescope Array Project
Auger@TA: An Auger-like surface detector micro-array embedded within the Telescope Array Project Open
The Pierre Auger Observatory (Auger) and the Telescope Array Project (TA) are the two largest ultra-high-energy cosmic ray (UHECR) observatories in the world. One obstacle in pursuing full-sky UHECR physics is the apparent discrepancy in f…
View article: Intensity Interferometry Observations of the Hα Envelope of γCas with MéO and a Portable Telescope
Intensity Interferometry Observations of the Hα Envelope of γCas with MéO and a Portable Telescope Open
We report on observations of the extended environment of the bright Be star γ -Cas performed using intensity interferometry measurements within its H α emission line. These observations were performed using a modified version of the I2C in…
View article: Intensity Interferometry observations of the H$α$ envelope of $γ$ Cas with MéO and a portable telescope
Intensity Interferometry observations of the H$α$ envelope of $γ$ Cas with MéO and a portable telescope Open
We report on observations of the extended environment of the bright Be star $γ$-Cas performed using intensity interferometry measurements within its H$α$ emission line. These observations were performed using a modified version of the I2C …
View article: Field and intensity correlations: the Siegert relation from stars to quantum emitters
Field and intensity correlations: the Siegert relation from stars to quantum emitters Open
View article: Intensity interferometry at Calern and beyond: progress report
Intensity interferometry at Calern and beyond: progress report Open
We present the current status of the I2C stellar intensity interferometer\nused towards high angular resolution observations of stars in visible\nwavelengths. In these proceedings, we present recent technical improvements to\nthe instrumen…
View article: Combined spectroscopy and intensity interferometry to determine the distances of the blue supergiants P Cygni and Rigel
Combined spectroscopy and intensity interferometry to determine the distances of the blue supergiants P Cygni and Rigel Open
In this paper we report on spatial intensity interferometry measurements within the H$α$ line on two stars: the Luminous Blue Variable supergiant \PCygni\,and the late-type B supergiant Rigel. The experimental setup was upgraded to allow s…
View article: Revival of intensity interferometry with modern photonic technologies
Revival of intensity interferometry with modern photonic technologies Open
We present our project on the revival of intensity interferometry with modern photonic technologies, and more specifically with conventional optical telescopes. This original approach is complementary to the work currently done aiming at a…
View article: The VERITAS-Stellar Intensity Interferometry (VSII) survey of Stellar Diameters
The VERITAS-Stellar Intensity Interferometry (VSII) survey of Stellar Diameters Open
The VERITAS Imaging Air Cherenkov Telescope (IACT) array was augmented in 2019 with high-speed focal plane electronics to allow its use for Stellar Intensity Interferometry (SII) observations. Since January 2019, the VERITAS Stellar Interf…
View article: The VERITAS-Stellar Intensity Interferometry (VSII) survey of Stellar\n Diameters
The VERITAS-Stellar Intensity Interferometry (VSII) survey of Stellar\n Diameters Open
The VERITAS Imaging Air Cherenkov Telescope (IACT) array was augmented in\n2019 with high-speed focal plane electronics to allow its use for Stellar\nIntensity Interferometry (SII) observations. Since January 2019, the VERITAS\nStellar Int…
View article: Status of the VERITAS Stellar Intensity Interferometry (VSII) System
Status of the VERITAS Stellar Intensity Interferometry (VSII) System Open
The VERITAS Imaging Air Cherenkov Telescope array (IACT) was augmented in 2019 with high-speed focal plane electronics to allow the use of VERITAS for Stellar Intensity Interferometry (SII) observations. Since that time, several improvemen…
View article: ASIIP: a stellar intensity interferometry target planner
ASIIP: a stellar intensity interferometry target planner Open
Over recent years, several independent groups have pursued the realization of a modern stellar intensity interferometry (SII) system to perform high angular resolution observations at optical wavelengths. Here, we present a general purpose…
View article: Astrophysical measurements with the VERITAS Stellar Intensity Interferometer
Astrophysical measurements with the VERITAS Stellar Intensity Interferometer Open
Imaging Atmospheric Cherenkov Telescopes have long been viewed as potential light collectors to be used for long baseline optical intensity interferometry observations. Intensity interferometry, as implemented with Cherenkov telescopes, is…
View article: A Fiber Optic Based High Voltage System for Stellar Intensity\n Interferometry Observations
A Fiber Optic Based High Voltage System for Stellar Intensity\n Interferometry Observations Open
Beginning in Fall 2018, the VERITAS high energy gamma-ray observatory (Amado,\nAZ) was upgraded to enable Stellar Intensity Interferometry (SII) observations\nduring bright moon conditions. The system potentially allows VERITAS to\nspatial…
View article: A Fiber Optic Based High Voltage System for Stellar Intensity Interferometry Observations
A Fiber Optic Based High Voltage System for Stellar Intensity Interferometry Observations Open
Beginning in Fall 2018, the VERITAS high energy gamma-ray observatory (Amado, AZ) was upgraded to enable Stellar Intensity Interferometry (SII) observations during bright moon conditions. The system potentially allows VERITAS to spatially …
View article: Science opportunities enabled by the era of Visible Band Stellar Imaging with sub-100 {\mu}arc-sec angular resolution
Science opportunities enabled by the era of Visible Band Stellar Imaging with sub-100 {\mu}arc-sec angular resolution Open
This white paper briefly summarizes stellar science opportunities enabled by ultra-high resolution (sub-100 {\mu} arc-sec) astronomical imaging in the visible (U/V) wavebands. Next generation arrays of Imaging Cherenkov telescopes, to be c…
View article: Science opportunities enabled by the era of Visible Band Stellar Imaging with sub-100 μarc-sec angular resolution
Science opportunities enabled by the era of Visible Band Stellar Imaging with sub-100 μarc-sec angular resolution Open
This white paper briefly summarizes stellar science opportunities enabled by ultra-high resolution (sub-100 μ arc-sec) astronomical imaging in the visible (U/V) wavebands. Next generation arrays of Imaging Cherenkov telescopes, to be const…
View article: Astro2020 White Paper State of the Profession: Intensity Interferometry
Astro2020 White Paper State of the Profession: Intensity Interferometry Open
Recent advances in telescope design, photodetector efficiency, and high-speed electronic data recording and synchronization have created the observational capability to achieve unprecedented angular resolution for several thousand bright (…
View article: Augmentation of VERITAS Telescopes for Stellar Intensity Interferometry
Augmentation of VERITAS Telescopes for Stellar Intensity Interferometry Open
View article: A Fiber Optic Based High Voltage System for Stellar Intensity Interferometry Observations
A Fiber Optic Based High Voltage System for Stellar Intensity Interferometry Observations Open
Beginning in Fall 2018, the VERITAS high energy gamma-ray observatory (Amado, AZ) was upgraded to enable Stellar Intensity Interferometry (SII) observations during bright moon conditions. The system potentially allows VERITAS to spatially …
View article: Astrophysical measurements with the VERITAS Stellar Intensity Interferometer
Astrophysical measurements with the VERITAS Stellar Intensity Interferometer Open
Imaging Atmospheric Cherenkov Telescopes have long been viewed as potential light collectors to be used for long baseline optical intensity interferometry observations. Intensity interferometry, as implemented with Cherenkov telescopes, is…
View article: Stellar Intensity Interferometric Capabilities of IACT Arrays
Stellar Intensity Interferometric Capabilities of IACT Arrays Open
Sub-milliarcsecond imaging of nearby main sequence stars and binary systems can provide critical information on stellar phenomena such as rotational deformation, accretion effects, and the universality of starspot (sunspot) cycles. Achievi…