English
Related papers

Related papers: CUbesat Solar Polarimeter (CUSP) Sensitivity Estim…

200 papers

Polarised light from astronomical targets can yield a wealth of information about their source radiation mechanisms, and about the geometry of the scattered light regions. Optical observations, of both the linear and circular polarisation…

Instrumentation and Methods for Astrophysics · Physics 2015-09-18 Gillian Kyne , David Lara , Gregg Hallinan , Michael Redfern , Andrew Shearer

Cube satellites, or CubeSats, are small satellites commonly used to perform Earth imaging and on-orbit scientific experiments. CubeSats are often powered using expensive, inflexible commercial-off-the-shelf solar panels, largely due to a…

Instrumentation and Detectors · Physics 2024-07-30 Nicholas J. Sorensen , Erik F. Halliwell

As a space-borne detector POLAR is designed to conduct hard X-ray polarization measurements of gamma-ray bursts on the statistically significant sample of events and with an unprecedented accuracy. During its development phase a number of…

High precision polarization measurements open new opportunities for the study of the magnetic field structure as traced by polarimetric measurements of the interstellar dust emission. Polarization parameters suffer from bias in the presence…

Astrophysics of Galaxies · Physics 2017-03-15 D. Alina , L. Montier , I. Ristorcelli , J. -P. Bernard , F. Levrier , E. Abdikamalov

CubeSats are emerging as low-cost tools to perform astronomy, exoplanet searches and earth observation. These satellites can target an object for science observation for weeks on end. This is typically not possible on larger missions where…

Instrumentation and Methods for Astrophysics · Physics 2017-01-27 Ravi teja Nallapu , Jekan Thangavelautham

In February 2011 we proposed a NASA Explorer Mission of Opportunity program to develop and operate a large-aperture ultraviolet coronagraph spectrometer called the Coronal Physics Investigator (CPI) as an attached International Space…

Polarization measurements in X-rays can provide unique opportunity to study the behavior of matter and radiation under extreme magnetic fields and extreme gravitational fields. Unfortunately, over past two decades, when X-ray astronomy…

Instrumentation and Methods for Astrophysics · Physics 2010-03-03 S. V. Vadawale , B. Paul , J. Pendharkar , Sachindra Naik

The CMB polarization is the Everest in the quest to characterize the earliest photons from the Universe. After a long list of ever-decreasing upper limits, a detection of polarization was made in 2002 by the DASI team at ell =~ 500. The…

Instrumentation and Methods for Astrophysics · Physics 2024-11-28 Denis Barkats

Recently a data set containing linear and circular polarisation information of a collection of six hundred pulsars has been released. The operative radio wavelength for the same was 21 cm. Pulsars radio emission process is modelled either…

High Energy Physics - Phenomenology · Physics 2019-11-11 Karam Chand , Subhayan Mandal

The Star-Planet Activity Research CubeSat (SPARCS) is a NASA-funded astrophysics mission, devoted to the study of the ultraviolet (UV) time-domain behavior in low-mass stars. Given their abundance and size, low-mass stars are important…

Since the end of the eighties and in response to a reported increase in the total neutrino flux in the Homestake experiment in coincidence with a solar flare, solar neutrino detectors have searched for solar flare signals. Neutrinos from…

High Energy Astrophysical Phenomena · Physics 2022-12-07 G. de Wasseige , P. Evenson , K. Hanson , N. van Eijndhoven , K. -L. Klein

The Visible Spectro-Polarimeter (ViSP) is one of the first light instruments for the Advanced Technology Solar Telescope (ATST). It is an echelle spectrograph designed to measure three different regions of the solar spectrum in three…

Instrumentation and Methods for Astrophysics · Physics 2015-06-05 Alfred G. de Wijn , Roberto Casini , Peter G. Nelson , Pei Huang

We have developed a software-based polarization spectrometer, PolariS, to acquire full-Stokes spectra with a very high spectral resolution of 61 Hz. The primary aim of PolariS is to measure the magnetic fields in dense star-forming cores by…

Instrumentation and Methods for Astrophysics · Physics 2014-12-04 Izumi Mizuno , Seiji Kameno , Amane Kano , Makoto Kuroo , Fumitaka Nakamura , Noriyuki Kawaguchi , Katsunori M. Shibata , Seisuke Kuji , Nario Kuno

X-ray polarimetry has the potential to make key-contributions to our understanding of galactic compact objects like binary black hole systems and neutron stars, and extragalactic objects like active galactic nuclei, blazars, and Gamma Ray…

Instrumentation and Methods for Astrophysics · Physics 2015-05-27 Henric Krawczynski

The pulse shapes simulated in the accompanying paper Part $-$ I are compared with observations of a model binary accreting X-ray pulsar, Centaurus X-3. With known Cen X-3 inclination angles provided as input to the $\texttt{AXP4}$ code, the…

High Energy Astrophysical Phenomena · Physics 2024-08-15 Parisee S. Shirke , Gulab C. Dewangan

We present results from our radio polarimetric study with the upgraded Giant Metrewave Radio Telescope (uGMRT) at Band 4 (550-850 MHz) of 3 blazars: radio-loud quasars 3C390.3, 4C71.07 and BL Lac object 1ES 2344+514. The aim of this study…

Astrophysics of Galaxies · Physics 2022-11-30 Janhavi Baghel , Silpa S. , P. Kharb , B. Sebastian , P. Shastri

The Gamma RAy Polarimeter Experiment (GRAPE), a balloon borne Compton polarimeter for 50-500 keV gamma rays, was successfully flown for the second time in 2014. GRAPE consists of 24 collimated polarimeter modules. Each module is made up of…

Instrumentation and Methods for Astrophysics · Physics 2020-12-25 Sambid K. Wasti

The Gamma-RAy Polarimeter Experiment (GRAPE) is a concept for an astronomical hard X-ray Compton polarimeter operating in the 50 - 500 keV energy band. The instrument has been optimized for wide-field polarization measurements of transient…

Quasi-monochromatic, high energy and highly polarized $\gamma$-ray beam sources based on Compton scattering of laser photons (LCS) on relativistic electrons have developed for the last few decades as established instruments for nuclear…

Instrumentation and Detectors · Physics 2022-11-11 Dan Filipescu

The spectrometer aboard INTEGRAL, SPI, has the capability to detect the signature of polarised emission from a bright gamma-ray source. GRB 041219a is the most intense burst localised by INTEGRAL and is an ideal candidate for such a study.…

Astrophysics · Physics 2009-11-13 S. McGlynn , D. J. Clark , A. J. Dean , L. Hanlon , S. McBreen , D. R. Willis , B. McBreen , A. J. Bird , S. Foley
‹ Prev 1 3 4 5 6 7 10 Next ›