English
Related papers

Related papers: The GBT Beam Shape at 109 GHz

200 papers

The Gamma-ray Transients Monitor (GTM) on board the Formosat-8B (FS-8B) satellite is designed to detect and localize Gamma-Ray Bursts (GRBs). By utilizing 2+2 CITIROC chips to manipulate 4+4 detectors, which are composed of GAGG(Ce)…

We present a precision measurement of radio sky brightness over 60-350 MHz. Accurate knowledge of the radio sky over these frequencies is essential for modelling foregrounds in experiments targeting cosmic dawn and the epoch of…

Cosmology and Nongalactic Astrophysics · Physics 2026-02-11 Luke McKay , Ravi Subrahmanyan , Aaron Chippendale , Pietro Bolli , Georgios Kyriakou , Alex Dunning , Ronald Ekers

Using the generic hydrodynamic model of Gamma-Ray Burst (GRB) afterglows, we calculate the radio afterglow light curves of low luminosity, high luminosity, failed and standard GRBs in different observational bands of FAST's energy window.…

High Energy Astrophysical Phenomena · Physics 2015-06-18 Zhi-Bin Zhang , Si-Wei Kong , Yong-Feng Huang , Di Li , Long-Biao Li

Gravitational-wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) is a space-borne instrument dedicated to monitoring high-energy transients, including Terrestrial Gamma-ray Flashes (TGFs) and Terrestrial Electron Beams…

The AGILE satellite, in orbit since 2007, localized up to October 2009 about 1 Gamma Ray Burst (GRB) per month with the hard X-ray imager SuperAGILE (18 - 60 keV) (with a rate reduced by a factor 2-3 in spinning mode) and is detecting…

High Energy Astrophysical Phenomena · Physics 2019-08-13 F. Longo , G. Barbiellini , E. Del Monte , M. Marisaldi , F. Fuschino , A. Giuliani

Recently the small-twist-angle (< 2{\deg}) bilayer graphene has received extraordinary attentions due to its exciting physical properties. Compared with monolayer graphene, the Brillouin zone folding in twisted bilayer graphene (TBG) leads…

Mesoscale and Nanoscale Physics · Physics 2020-12-24 Bingchen Deng , Chao Ma , Qiyue Wang , Shaofan Yuan , Kenji Watanabe , Takashi Taniguchi , Fan Zhang , Fengnian Xia

We report the lowest frequency measurements of gamma-ray burst (GRB) 171205A with the upgraded Giant Metrewave Radio Telescope (uGMRT) covering a frequency range from 250--1450 MHz and a period of $4-937$ days. It is the first GRB afterglow…

High Energy Astrophysical Phenomena · Physics 2021-02-10 Barun Maity , Poonam Chandra

We report on the search for Gamma Ray Bursts (GRBs) in the energy range 1-100 GeV in coincidence with the prompt emission detected by satellites using the Astrophysical Radiation with Ground-based Observatory at YangBaJing (ARGO-YBJ) air…

High Energy Astrophysical Phenomena · Physics 2012-08-27 YBJ Collaboration , G. Aielli

In addition to fast radio burst (FRB) searches carried out using dedicated surveys, a number of radio observatories take advantage of commensal opportunities with large facilities in which observations for other projects can be searched for…

Very high energy (VHE, i.e. $\gtrsim 10$ GeV) photons from Gamma-Ray Bursts (GRBs), as high as 90 GeV in rest frame energy, have been detected by the $Fermi$ Large Area Telescope (LAT). This provides hope for a high statistics GRB detection…

High Energy Astrophysical Phenomena · Physics 2011-09-27 Aurelien Bouvier , Rudy Gilmore , Valerie Connaughton , Nepomuk Otte , Joel R. Primack , David A. Williams

The use of light axion dark matter experiments as high-frequency gravitational wave (HFGW) detectors has garnered increasing attention in recent years. We explore the capabilities of the Broadband Reflector Experiment for Axion Detection…

High Energy Physics - Phenomenology · Physics 2025-08-05 Rodolfo Capdevilla , Roni Harnik , Taegyun Kim , Tom Krokotsch

The parsec-scale radio properties of 232 active galactic nuclei (AGNs), most of which are blazars, detected by the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope have been observed contemporaneously by the Very Long…

High Energy Astrophysical Phenomena · Physics 2015-06-11 J. D. Linford , G. B. Taylor , F. K. Schinzel

Phased array feeds (PAFs) for reflector antennas offer the potential for increased reflector field of view and faster survey speeds. To address some of the development challenges that remain for scientifically useful PAFs, including…

Instrumentation and Methods for Astrophysics · Physics 2015-05-14 Jonathan Landon , Michael Elmer , Jacob Waldron , David Jones , Alan Stemmons , Brian D. Jeffs , Karl F. Warnick , J. Richard Fisher , Roger D. Norrod

We present the measurements of sky surface brightness on Mount Graham International Observatory obtained during the first binocular-mode science runs at the Large Binocular Telescope (LBT). A total of 860 images obtained on 23 moonless…

Earth and Planetary Astrophysics · Physics 2015-05-13 M. Pedani

We report Giant Meterwave Radio Telescope (GMRT) continuum observations of six nearby normal galaxies at 333 MHz. The galaxies are observed with angular resolutions better than ~20" (corresponding to a linear scale of about 0.4 - 1 kpc).…

Astrophysics of Galaxies · Physics 2015-05-30 Aritra Basu , Dipanjan Mitra , Yogesh Wadadekar , C. H. Ishwara-Chandra

We make the case for the early development of a Mid-Frequency-Band (MFB) gravitational wave (GW) observatory in geosynchronous orbit (73,000 km arm), optimized for the frequency band 10 mHz to 1 Hz. MFB bridges the science acquisition…

Instrumentation and Methods for Astrophysics · Physics 2019-08-09 Peter F. Michelson , Robert L. Byer , Sasha Buchman , Ilya Mandel , John Lipa , Shally Saraf

Since it is not possible to predict when a Gamma-Ray Burst (GRB) will occur or when Active Galactic Nucleus (AGN) flaring activity starts, follow-up/monitoring ground telescopes must be located as uniformly as possible all over the world in…

High Energy Astrophysical Phenomena · Physics 2015-05-20 T. Sakamoto , C. A. Wallace , D. Donato , N. Gehrels , T. Okajima , T. N. Ukwatta

We have developed FFT beamforming techniques for the CHIME radio telescope, to search for and localize the astrophysical signals from Fast Radio Bursts (FRBs) over a large instantaneous field-of-view (FOV) while maintaining the full angular…

Instrumentation and Methods for Astrophysics · Physics 2021-03-22 C. Ng , K. Vanderlinde , A. Paradise , P. Klages , K. Masui , K. Smith , K. Bandura , P. J. Boyle , M. Dobbs , V. Kaspi , A. Renard , J. R. Shaw , I. Stairs , I. Tretyakov

Gamma rays from extragalactic sources are attenuated by pair-production interactions with diffuse photons of the extragalactic background light (EBL). Gamma-ray bursts (GRBs) are a source of high-redshift photons above 10 GeV, and could be…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Rudy C. Gilmore , Francisco Prada , Joel R. Primack

We report the discovery of GRB 221009A, the highest flux gamma-ray burst ever observed by the Fermi Gamma-ray Burst Monitor (GBM). This GRB has continuous prompt emission lasting more than 600 seconds which smoothly transitions to afterglow…

High Energy Astrophysical Phenomena · Physics 2023-08-09 S. Lesage , P. Veres , M. S. Briggs , A. Goldstein , D. Kocevski , E. Burns , C. A. Wilson-Hodge , P. N. Bhat , D. Huppenkothen , C. L. Fryer , R. Hamburg , J. Racusin , E. Bissaldi , W. H. Cleveland , S. Dalessi , C. Fletcher , M. M. Giles , B. A. Hristov , C. M. Hui , B. Mailyan , C. Malacaria , S. Poolakkil , O. J. Roberts , A. von Kienlin , J. Wood , M. Ajello , M. Arimoto , L. Baldini , J. Ballet , M. G. Baring , D. Bastieri , J. Becerra Gonzalez , R. Bellazzini , E. Bissaldi , R. D. Blandford , R. Bonino , P. Bruel , S. Buson , R. A. Cameron , R. Caputo , P. A. Caraveo , E. Cavazzuti , G. Chiaro , N. Cibrario , S. Ciprini , P. Cristarella Orestano , M. Crnogorcevic , A. Cuoco , S. Cutini , F. DAmmando , S. De Gaetano , N. Di Lalla , L. Di Venere , A. Dominguez , S. J. Fegan , E. C. Ferrara , H. Fleischhack , Y. Fukazawa , S. Funk , P. Fusco , G. Galanti , V. Gammaldi , F. Gargano , C. Gasbarra , D. Gasparrini , S. Germani , F. Giacchino , N. Giglietto , R. Gill , M. Giroletti , J. Granot , D. Green , I. A. Grenier , S. Guiriec , M. Gustafsson , E. Hays , J. W. Hewitt , D. Horan , X. Hou , M. Kuss , L. Latronico , A. Laviron , M. Lemoine-Goumard , J. Li , I. Liodakis , F. Longo , F. Loparco , L. Lorusso , M. N. Lovellette , P. Lubrano , S. Maldera , A. Manfreda , G. Marti-Devesa , M. N. Mazziotta , J. E. McEnery , I. Mereu , M. Meyer , P. F. Michelson , T. Mizuno , M. E. Monzani , A. Morselli , I. V. Moskalenko , M. Negro , E. Nuss , N. Omodei , E. Orlando , J. F. Ormes , D. Paneque , G. Panzarini , M. Persic , M. Pesce-Rollins , R. Pillera , F. Piron , H. Poon , T. A. Porter , G. Principe , S. Raino , R. Rando , B. Rani , M. Razzano , S. Razzaque , A. Reimer , O. Reimer , F. Ryde , M. Sanchez-Conde , P. M. Saz Parkinson , L. Scotton , D. Serini , C. Sgro , V. Sharma , E. J. Siskind , G. Spandre , P. Spinelli , H. Tajima , D. F. Torres , J. Valverde , T. Venters , Z. Wadiasingh , K. Wood , G. Zaharijas
‹ Prev 1 4 5 6 7 8 10 Next ›