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NASA's Interface Region Imaging Spectrograph (IRIS) provides high resolution observations of the solar atmosphere through UV spectroscopy and imaging. Since the launch of IRIS in June 2013, we have conducted systematic observation campaigns…

Blazars can be detected from very large distances due to their high luminosity. However, the detection of $\gamma$-ray emission of blazars beyond $z=3$ has only been confirmed for a small number of sources. Such observations probe the…

The Multicolor Simultaneous Camera for studying Atmospheres of Transiting exoplanets (MuSCAT) is an optical three-band (g'_2-, r'_2-, and z_{s,2}-band) imager that was recently developed for the 188cm telescope at Okayama Astrophysical…

A new solar burst emission spectral component has been found showing sub-THz fluxes increasing with frequency, spectrally separated from the well known microwave component. Rapid pulsations are found present in all events observed at the…

Solar observations in the mid-infrared 8-14 \mu\m band continuum were carried out with cadence of 5 frames per second, in December 2007. Rapid small heated sources, with typical duration of the order of seconds, were found on the bright…

We present first results from a narrowband imaging program for intermediate redshift emission-line galaxies using the newly commissioned FourStar infrared camera at the 6.5m Magellan telescope. To enable prompt identification of H\alpha\…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Janice C. Lee , C. Ly , L. Spitler , I. Labbe , S. Salim , S. E. Persson , M. Ouchi , D. Dale , A. Monson , D. Murphy

The Large Binocular Telescope Interferometer is a NASA-funded nulling and imaging instrument designed to coherently combine the two 8.4-m primary mirrors of the LBT for high-sensitivity, high-contrast, and high-resolution infrared imaging…

Submillimeter and millimeter wavelengths provide a unique view of the Universe, from the gas and dust that fills and surrounds galaxies to the chromosphere of our own Sun. Current single-dish facilities have presented a tantalising view of…

Instrumentation and Methods for Astrophysics · Physics 2024-08-22 Mark Booth , Pamela Klaassen , Claudia Cicone , Tony Mroczkowski , Martin A. Cordiner , Luca Di Mascolo , Doug Johnstone , Eelco van Kampen , Minju M. Lee , Daizhong Liu , John Orlowski-Scherer , Amélie Saintonge , Matthew W. L. Smith , Alexander Thelen , Sven Wedemeyer , Kazunori Akiyama , Stefano Andreon , Doris Arzoumanian , Tom J. L. C. Bakx , Caroline Bot , Geoffrey Bower , Roman Brajša , Chian-Chou Chen , Elisabete da Cunha , David Eden , Stefano Ettori , Brandt Gaches , Evanthia Hatziminaoglou , Patricia Luppe , Benjamin Magnelli , Jonathan P. Marshall , Francisco Miguel Montenegro-Montes , Michael Niemack , Conor Nixon , Imke de Pater , Yvette Perrott , Sandra I. Raimundo , Elena Redaelli , Anita Richards , Matus Rybak , Nikolina Šarčević , Dmitry Semenov , Silvia Spezzano , Sundar Srinivasan , Thomas Stanke , Paola Andreani , Maria T. Beltrán , Bryan J. Butler , Sebastiano Cantalupo , Miguel Chavez Dagostino , Ana Duarte-Cabral , Bjorn Emonts , Leigh Fletcher , Dale E. Gary , Stanislav Gunar , Alvaro Hacar , Bendix Hagedorn , Tomek Kaminski , Fiona Kirton , Katherine de Kleer , Eduard Kontar , Yi-Jehng Kuan , John Lightfoot , Enrique Lopez-Rodriguez , Andreas Lundgren , Stefanie N. Milam , Atul Mohan , Raphael Moreno , Galina G. Motorina , Arielle Moullet , Kate Pattle , Alberto Pellizzoni , Nicolas Peretto , Joanna Ramasawmy , Claudio Ricci , Andrew J. Rigby , Álvaro Sánchez-Monge , Maryam Saberi , Masumi Shimojo , Aurora Simionescu , Mark Thompson , Alessio Traficante , Cristian Vignali , Stephen M. White

Blazars are jetted active galactic nuclei with a jet pointing close to the line of sight, hence enhancing their intrinsic luminosity and variability. Monitoring these sources is essential in order to catch them flaring and promptly organize…

High Energy Astrophysical Phenomena · Physics 2019-01-23 Jean-Philippe Lenain

A multi-wavelength spatial and temporal analysis of solar high energy electrons is conducted using the August 20, 2002 flare of an unusually flat (gamma=1.8) hard X-ray spectrum. The flare is studied using RHESSI, Halpha, radio, TRACE, and…

Astrophysics · Physics 2008-11-26 J. Kasparova , M. Karlicky , E. P. Kontar , R. A. Schwartz , B. R. Dennis

Chemical doping of bulk black phosphorus is a well-recognized way to reduce surface oxidation and degradation. Here, we report on the fabrication of terahertz frequency detectors consisting of an antenna-coupled field-effect transistor…

Mesoscale and Nanoscale Physics · Physics 2019-03-08 Leonardo Viti , Antonio Politano , Kai Zhang , Miriam Serena Vitiello

This paper is the second in a pair of articles presenting data release 1 (DR1) of the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS), the largest single open-time key project carried out with the Herschel Space Observatory.…

The mid-infrared (MIR), far-infrared (FIR) to terahertz (THz) frequencies are the least developed parts of the electromagnetic spectrum for applications. Traditional semiconductor technologies like laser diodes and photodetectors are…

Materials Science · Physics 2020-07-27 Haowei Xu , Jian Zhou , Hua Wang , Ju Li

The Simons Observatory (SO) is a cosmic microwave background (CMB) survey experiment that includes small-aperture telescopes (SATs) observing from an altitude of 5,200 m in the Atacama Desert in Chile. The SO SATs will cover six spectral…

We study the nature of energy release and transfer for two sub-A class solar microflares observed during the second flight of the Focusing Optics X-ray Solar Imager (FOXSI-2) sounding rocket experiment on 2014 December 11. FOXSI is the…

The Mexico-UK Submillimetre Camera for Astronomy (MUSCAT) is the second-generation large-format continuum camera operating in the 1.1 mm band to be installed on the 50-m diameter Large Millimeter Telescope (LMT) in Mexico. The focal plane…

The SALTUS Probe mission will provide a powerful far-infrared (far-IR) pointed space observatory to explore our cosmic origins and the possibility of life elsewhere. The observatory employs an innovative deployable 14-m aperture, with a…

Currently the detection of Very High Energy gamma-rays for astrophysics rely on the measurement of the Extensive Air Showers (EAS) either using Cherenkov detectors or EAS arrays with larger field of views but also larger energy thresholds.…

Instrumentation and Methods for Astrophysics · Physics 2018-05-01 P. Assis , U. Barres de Almeida , A. Blanco , R. Conceição , B. D'Ettoree Piazzoli , A. de Angelis , M. Doro , P. Fonte , L. Lopes , G. Matthiae , M. Pimenta , R. Shellard , B. Tomé

This study details the development and validation of an airborne THz spectrometer designed for real-time, remote detection of atmospheric pollutants. The platform couples a stabilized unmanned aerial system (UAS) with a high-resolution…

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