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Related papers: Asteroid Polarimetric-Phase Behavior in the Near-I…

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Sgr A* is variable at radio and submillimeter wavelengths on hourly time scales showing time delays between the peaks of flare emission as well as linearly polarized emission at millimeter and sub-mm wavelengths. To determine the…

Astrophysics · Physics 2009-11-13 F. Yusef-Zadeh , M. Wardle , W. D. Cotton , C. O. Heinke , D. A. Roberts

We explore the potential of polarimetry as a tool for detecting and characterizing exorings. For that purpose, we have improved the publicly available photometric code Pryngles by adding the results of radiative transfer calculations that…

Earth and Planetary Astrophysics · Physics 2025-01-29 Allard K. Veenstra , Jorge I. Zuluaga , Jaime A. Alvarado-Montes , Mario Sucerquia , Daphne M. Stam

The characterization of the polarimetric properties of the planet Earth is important for the interpretation of expected observations and the planning of future instruments. We present a multi-wavelengths and multi-phase set of benchmark…

Earth and Planetary Astrophysics · Physics 2015-06-16 Andreas Bazzon , Hans Martin Schmid , Daniel Gisler

Polarimetric data provide key insights into infrared emission mechanisms in the inner disks of YSOs and the details of dust formation around AGB stars. While polarization measurements are well-established in radio interferometry, they…

Instrumentation and Methods for Astrophysics · Physics 2025-09-15 Linling Shuai , John D. Monnier , Benjamin R. Setterholm , Stefan Kraus , Narsireddy Anugu , Tyler Gardner , Jean-Baptiste Le Bouquin , Gail H. Schaefer

Polarimetry provides key physical information on the properties of interacting binary systems, sometimes difficult to obtain by any other type of observation. Indeed, radiation processes such as scattering by free electrons in the hot…

Solar and Stellar Astrophysics · Physics 2019-10-16 Tariq Shahbaz

The Planck mission, originally devised for cosmological studies, offers the opportunity to observe Solar System objects at millimetric and submillimetric wavelengths. We concentrate in this paper on the asteroids of the Main Belt. We intend…

Astrophysics · Physics 2009-11-07 G. Cremonese , F. Marzari , C. Burigana , M. Maris

Using the Submillimeter Array, we have made the first high angular resolution measurements of the linear polarization of Sagittarius A* at submillimeter wavelengths, and the first detection of intra-day variability in its linear…

Astrophysics · Physics 2009-11-13 D. P. Marrone , J. M. Moran , J. -H. Zhao , R. Rao

133P/Elst-Pizarro is an object that has been described as either an active asteroid or a cometary object in the main asteroid belt. Here we present a photometric and polarimetric study of this object in an attempt to infer additional…

Earth and Planetary Astrophysics · Physics 2015-05-18 S. Bagnulo , G. P. Tozzi , H. Boehnhardt , J. -B. Vincent , K. Muinonen

The eclipsing binary epsilon Aur is unique in being a very long-period binary involving an evolved, variable F star and a suspected B main-sequence star enshrouded in an opaque circumstellar disk. The geometrical arrangement is that the…

Solar and Stellar Astrophysics · Physics 2021-08-25 Richard Ignace , Gary Henson , Hilding Neilson , William Asbury

We measured mid-infrared polarization of protoplanetary discs to gain new insight into their magnetic fields. Using CanariCam at the 10.4 m Gran Telescopio Canarias, we detected linear polarization at 8.7, 10.3, and 12.5 $\mu$m from discs…

Earth and Planetary Astrophysics · Physics 2017-11-16 Dan Li , Charles M. Telesco , Han Zhang , Christopher M. Wright , Eric Pantin , Peter J. Barnes , Chris Packham

Microstructure emission, involving short time scale, often quasi-periodic, intensity fluctuations in subpulse emission, is well known in normal period pulsars. In this letter, we present the first detections of quasi-periodic microstructure…

High Energy Astrophysical Phenomena · Physics 2016-12-06 Kishalay De , Yashwant Gupta , Prateek Sharma

We report near-infrared polarization of the zodiacal light (ZL) measured from space by the Diffuse Infrared Background Experiment (DIRBE) on board the Cosmic Background Explorer in photometric bands centered at 1.25, 2.2, and 3.5 $\mu$m. To…

Earth and Planetary Astrophysics · Physics 2023-03-07 Kohji Takimoto , Shuji Matsuura , Kei Sano , Richard M. Feder

The value of accurately knowing the absolute calibration of the polarizing elements in the Near Infrared Camera and Multi-Object Spectrometer (NICMOS) becomes especially important when conducting studies which require measuring degrees of…

Astrophysics · Physics 2009-11-11 D. Batcheldor , A. Robinson , D. Axon , D. C. Hines , W. Sparks , C. Tadhunter

Taking advantage of the advances in array detector technology, an imaging polarimeter (IMPOL) has been constructed for measuring linear polarization in the wavelength band from 400-800 nm. It makes use of a Wollaston prism as the analyser…

Astrophysics · Physics 2009-09-15 A. N. Ramaprakash , Ranjan Gupta , A. K. Sen , S. N. Tandon

We present the polarization pulse profiles for 28 pulsars observed with the Arecibo Observatory by the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) timing project at 2.1 GHz, 1.4 GHz, and 430 MHz. These profiles…

The low-luminosity black hole Sgr A* provides a testbed for models of Radiatively Inefficient Accretion Flows (RIAFs). Recent sub-millimeter linear polarization measurements of Sgr A* have provided evidence that the electrons in the…

Astrophysics · Physics 2009-11-13 D. R. Ballantyne , F. Ozel , D. Psaltis

The Imaging X-ray Polarimetry Explorer is an X-ray observatory measuring the X-ray polarization in the 2-8 keV energy range. Highly sensitive to the system's geometry, X-ray polarization is a unique method to probe the structure of X-ray…

High Energy Astrophysical Phenomena · Physics 2025-09-25 M. Brigitte , J. Svoboda

Several massive black holes exhibit flux variability on time scales that correspond to source sizes of the order of few Schwarzschild radii. We survey the potential of near-infrared and X-ray polarimetry to constrain physical properties of…

High Energy Astrophysical Phenomena · Physics 2015-05-27 M. Zamaninasab , A. Eckart , M. Dovciak , V. Karas , R. Schoedel , G. Witzel , N. Sabha , M. Garcia-Marin , D. Kunneriath , K. Muzic , C. Straubmeier , M. Valencia-S , J. A. Zensus

Massive star winds are complex radiation-hydrodynamic (sometimes magnetohydrodynamic) outflows that are propelled by their enormously strong luminosities. The winds are often found to be structured and variable, but can also display…

Solar and Stellar Astrophysics · Physics 2015-06-23 R. Ignace , N. St-Louis , F. Proulx-Giraldeau

Optical polarimeters are typically calibrated using measurements of stars with known and stable polarization parameters. However, there is a lack of such stars available across the sky. Many of the currently available standards are not…

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