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The optical interferometry has been widely used in various high precision applications. Usually, the minimum precision of an interferometry is limited by various technique noises in practice. To suppress such kind of noises, we propose a…

Optics · Physics 2018-06-20 Chen Fang , Jing-Zheng Huang , Guihua Zeng

Here I review the current state of the field of optical stellar interferometry, concentrating on ground-based work although a brief report of space interferometry missions is included. We pause both to reflect on decades of immense progress…

Astrophysics · Physics 2009-11-10 John D. Monnier

What is long-baseline optical/IR stellar interferometry? A few years ago, many astronomers might not have been able to answer that question properly. This is today hopefully not the case anymore, because mainstream facilities, such as the…

Instrumentation and Methods for Astrophysics · Physics 2016-11-26 Florentin Millour

Large scale atom interferometers promise unrivaled strain sensitivity to midband (0.1 - 10 Hz) gravitational waves, and will probe a new parameter space in the search for ultra-light scalar dark matter. These atom interferometers require a…

Atomic Physics · Physics 2020-12-14 R. Nourshargh , S. Lellouch , S. Hedges , M. Langlois , K. Bongs , M. Holynski

In this poster contribution we highlight the equivalence between an Imaging Air Cherenkov Telescope (IACT) array and an Intensity Interferometer for a range of technical requirements. We touch on the differences between a Michelson and an…

Astrophysics · Physics 2009-11-13 W. J. de Wit , S. LeBohec , J. A. Hinton , R. J. White , M. K. Daniel , J. Holder

The University of Sydney has a long history in optical stellar interferometry. The first project, in the 1960s, was the Narrabri Stellar Intensity Interferometer, which measured the angular diameters of 32 hot stars and established the…

Instrumentation and Methods for Astrophysics · Physics 2009-05-13 J. G. Robertson , J. Davis , M. J. Ireland , P. G. Tuthill , W. J. Tango , A. P. Jacob , J. R. North , T. A. ten Brummelaar

The Infrared spectral region is a rich one for variable star work, especially of cooler stars, but it has been hard to do IR photometry because of high, variable background, and specialized telescopic equipment that is usually required to…

Astrophysics · Physics 2008-05-27 Eugene F. Milone , Andrew T. Young

I review recent applications of two-particle intensity interferometry in high energy physics, concentrating on relativistic heavy ion collisions. By measuring hadronic single-particle spectra and two-particle correlations in hadron-hadron…

High Energy Physics - Phenomenology · Physics 2007-05-23 Ulrich Heinz

Interferometric observables are strongly correlated, yet it is common practice to ignore these correlations in the data analysis process. We develop an empirical model for the correlations present in Very Large Telescope Interferometer…

Instrumentation and Methods for Astrophysics · Physics 2021-01-04 Jens Kammerer , Antoine Mérand , Michael J. Ireland , Sylvestre Lacour

In recent years, imaging atmospheric Cherenkov telescopes (IACTs) have emerged as promising platforms for optical interferometry through the use of intensity interferometry. IACTs combine large segmented mirrors, photodetectors with…

Instrumentation and Methods for Astrophysics · Physics 2025-11-21 Juan Cortina , Alejo Cifuentes-Santos , Tarek Hassan , Fernando Frias

We discuss the design, construction, and operation of a new intensity interferometer, based on the campus of Southern Connecticut State University in New Haven, Connecticut. While this paper will focus on observations taken with an original…

Instrumentation and Methods for Astrophysics · Physics 2022-02-02 Elliott P. Horch , Samuel A. Weiss , Paul M. Klaucke , Richard A. Pellegrino , Justin D. Rupert

The optical Vernier effect magnifies the sensing capabilities of an interferometer, allowing for unprecedented sensitivities and resolutions to be achieved. Just like a caliper uses two different scales to achieve higher resolution…

Atmospheric turbulence is a serious problem for ground-based interferometers. It places tight limits on both sensitivity and measurement precision. Phase referencing is a method to overcome these limitations via the use of a bright…

Astrophysics · Physics 2015-06-24 Benjamin F. Lane , Matthew W. Muterspaugh

By analysing the radio emissions from air showers using interferometry, we can estimate their properties. In this contribution, we apply interferometry to reconstruct air-shower parameters based on measurements taken with the Auger…

Instrumentation and Methods for Astrophysics · Physics 2025-09-08 Pim van Dillen

In prior work, conducted since 2017, two celestial pointing directions have been observed to be associated with the measurement of anomalous high counts of narrow bandwidth, short duration, polarized radio frequency pulse pairs. The prior…

Signal Processing · Electrical Eng. & Systems 2025-04-29 William J. Crilly

This article is a sort of sequel of the earlier extensive review by Saha (1999a) where emphasis was laid down on the ground based single aperture, as well as on the working long baseline optical interferometers (LBI) situated at the various…

Astrophysics · Physics 2007-05-23 S K Saha , S. Morel

Interferometry, as the key technique in modern precision measurements, has been used for length diagnosis in the fields of engineering metrology and astronomy. Analogous interferometric technique for time domain precision measurement is a…

Optics · Physics 2019-11-15 Zhen Yang , Wei Cao , Yunlong Mo , Huiyao Xu , Kang Mi , Pengfei Lan , Qingbin Zhang , Peixiang Lu

Kilometric-scale optical imagers seem feasible to realize by intensity interferometry, using telescopes primarily erected for measuring Cherenkov light induced by gamma rays. Planned arrays envision 50--100 telescopes, distributed over some…

Instrumentation and Methods for Astrophysics · Physics 2010-09-30 Hannes Jensen , Dainis Dravins , Stephan LeBohec , Paul D. Nuñez

A novel interferometric technique that uses the spectrum of the current fluctuations of a quadratic detector, a type of detector commonly used in Astronomy, has recently been introduced. It has major advantages with respect to classical…

Instrumentation and Methods for Astrophysics · Physics 2015-06-18 Ermanno F. Borra

Infrared interferometry is a new frontier for precision ground based observing, with new instrumentation achieving milliarcsecond (mas) spatial resolutions for faint sources, along with astrometry on the order of 10 microarcseconds. This…

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