Results 131 to 140 of about 9,059 (229)

The first scientific experiment using Global e-VLBI observations: a multiwavelength campaign on the gamma-ray Narrow-Line Seyfert 1 PMN J0948+0022 [PDF]

, 2010
The detection of gamma-ray emission by Fermi-LAT from the radio loud Narrow Line Seyfert 1 PMN J0948+0022 (Abdo et al. 2009, ApJ 699, 976) triggered a multi-wavelength campaign between March and July 2009. Given its high compactness (Doi et al.
Paragi, Zsolt, Tzioumis, A.K., Foschini, L, Blanchard, J, Hong, X, Giroletti, Marcello, Kadler, M, Bignall, Hayley, Gabanyi, K, Doi, A, Nagai, H, Kino, M, Colomer, F, Sekido, M, Szomoru, A, Langevelde, H.J. van, Phillips, C   +16 more
core  

Deep Very Long Baseline Interferometry Constraints on Compact Radio Cores in Four Ultraluminous X-Ray Sources

The Astrophysical Journal
We present high-sensitivity very long baseline interferometry (VLBI) observations of four ultraluminous X-ray sources (ULXs): Holmberg II X-1, IC 342 X-1, NGC 6946 X-1, and NGC 925 X-1.
Ailing Wang, Hua Feng, Tao An, Yijia Zhang, Jun Yang, Roberto Soria, Lian Tao, Thomas Russell, Jing Guo, Liang Zhang   +9 more
doaj   +1 more source

VLBI observations of H2O masers towards high-mass Young Stellar Objects [PDF]

, 2004
We have conducted multi-epoch VLBI observations of the 22.2 GHz water masers towards three massive star forming regions (Sh 2-255 IR, WB89-234, AFGL 5142). For the maser fetures persistent in time, accurate values of the proper motions are derived.
MOSCADELLI, Luca, Goddi, C.
core  

Adaption of the VLBI Standard Interface to the K5 VLBI System

Adaption of the VLBI Standard Interface to the K5 VLBI System
資料番号 ...
openaire   +1 more source

Sphero-Conical Modeling for the Estimation of Very Long Baseline Interferometry Invariant Point. [PDF]

Sensors (Basel), 2022
Bae TS, Hong CK.
europepmc   +1 more source

Wide bandwidth integrated 1-4 GHz feed development for VLBI and SKA [Elektronisk resurs] [PDF]

, 2012
Wide-band single pixel feeds such as the wide-band Eleven feed developed in Europe through Onsala Space Observatory/Chalmers are rapidly increasing in maturity.
Geralt bij de Vaate, J.,, Yang, Jian,, Pantaleev, Miroslav,, Keller, R.,, Schäfer, F.,, Ivashina, Marianna,, Lindqvist, Michael,, Alef, W.,   +7 more
core  

A VLBI view on the extreme scintillator J1819+3845 [PDF]

, 2012
Scintillation of flat spectrum radio sources provides a unique instrument to study the characteristics of the electron density distribution throughout the interstellar medium as well as to study the microarcsecond structure of compact radio objects ...
Gurvits, L. (author), De Bruyn, G. (author), Kharb, P., Macquart, J.P., Gurvits, L., Kharb, P. (author), Macquart, J.P. (author), Cimo, G. (author), Cimo, G., De Bruyn, G.   +9 more
core  

GSFC VLBI Analysis Center [PDF]

, 2013
This report presents the activities of the GSFC VLBI Analysis Center during 2012. The GSFC VLBI Analysis Center analyzes all IVS sessions, makes regular IVS submissions of data and analysis products, and performs research and software development aimed ...
Ma, Chopo, MacMillan, Dan, Gordon, David, Bolotin, Sergei, Le Bail, Karine, Baver, Karen, Gipson, John   +6 more
core   +1 more source

Probing a southern hemisphere VLBI Intensive baseline configuration for UT1 determination. [PDF]

Earth Planets Space, 2022
Böhm S, Böhm J, Gruber J, Kern L, McCallum J, McCallum L, McCarthy T, Quick J, Schartner M.   +8 more
europepmc   +1 more source

Haystack Observatory VLBI Correlator [PDF]

, 2013
This report summarizes the activities of the Haystack Correlator during 2012. Highlights include finding a solution to the DiFX InfiniBand timeout problem and other DiFX software development, conducting a DBE comparison test following the First ...
Niell, Arthur, Corey, Brian, Titus, Mike, Dudevoir, Kevin, Whitney, Alan, Cappallo, Roger   +5 more
core   +1 more source