scholarly journals Aqueye and Iqueye, Very-High-Time-Resolution Photon-Counting Photometers

2011 ◽  
Vol 7 (S285) ◽  
pp. 280-282
Author(s):  
Cesare Barbieri ◽  
Giampiero Naletto ◽  
Luca Zampieri ◽  
Enrico Verroi ◽  
Serena Gradari ◽  
...  
Keyword(s):  
Time Resolution ◽  
Arrival Time ◽  
Dynamic Range ◽  
Crab Nebula ◽  
Photon Counting ◽  
High Time ◽  
High Time Resolution ◽  
Definition Of ◽  
The Crab Nebula ◽  
Very High

AbstractWe describe very high-time-resolution photometers capable of tagging the arrival time of each photon with a resolution and accuracy of few hundred picoseconds, for hours of continuous acquisition, and with a dynamic range of more than 6 orders of magnitude. The final goal is the conceptual definition of a “quantum” photometer for the E-ELT, capable of detecting and measuring second-order correlation effects in photon streams from celestial sources. Two prototype units have been built and operated, one for the Asiago 1.8-m telescope (AquEYE) and one for the 3.5-m NTT (IquEYE).Here we will present results obtained by IquEYE on the Crab Nebula pulsar in simultaneous radio observations with Jodrell Bank in December 2009.

High Time Resolution Infrared Observations of the Crab Nebula Pulsar and the Pulsar Emission Mechanism

1997 ◽  
Vol 477 (1) ◽  
pp. 465-474 ◽  
Author(s):  
S. S. Eikenberry ◽  
G. G. Fazio ◽  
S. M. Ransom ◽  
J. Middleditch ◽  
J. Kristian ◽  
...  
Keyword(s):  
Time Resolution ◽  
Crab Nebula ◽  
High Time ◽  
High Time Resolution ◽  
Emission Mechanism ◽  
Pulsar Emission ◽  
Infrared Observations ◽  
The Crab Nebula

High time resolution infrared observations of the Crab Nebula pulsar

1994 ◽  
Vol 431 ◽  
pp. L43 ◽  
Author(s):  
S. M. Ransom ◽  
G. G. Fazio ◽  
S. S. Eikenberry ◽  
J. Middleditch ◽  
J. Kristian ◽  
...  
Keyword(s):  
Time Resolution ◽  
Crab Nebula ◽  
High Time ◽  
High Time Resolution ◽  
Infrared Observations ◽  
The Crab Nebula

A new TAC-based multichannel front-end electronics for TOF experiments with very high time resolution

2005 ◽  
Vol 52 (3) ◽  
pp. 745-747 ◽  
Author(s):  
K. Koch ◽  
H. Hardel ◽  
R. Schulze ◽  
E. Badura ◽  
J. Hoffmann
Keyword(s):  
Time Resolution ◽  
High Time ◽  
High Time Resolution ◽  
Front End ◽  
Very High

scholarly journals Fourier Analysis of Radio Bursts Observed with Very High Time Resolution

Solar Physics ◽  
2014 ◽  
Vol 290 (1) ◽  
pp. 169-180 ◽  
Author(s):  
B. P. Da̧browski ◽  
M. Karlický ◽  
P. Rudawy
Keyword(s):  
Fourier Analysis ◽  
Time Resolution ◽  
High Time ◽  
High Time Resolution ◽  
Radio Bursts ◽  
Very High

scholarly journals BVIT: A Visible Imaging, Photon Counting Instrument on the Southern African Large Telescope for High Time Resolution Astronomy

2012 ◽  
Vol 37 ◽  
pp. 1453-1460 ◽  
Author(s):  
Jason B. McPhate ◽  
Oswald H.W. Siegmund ◽  
Barry Y. Welsh ◽  
John V. Vallerga ◽  
David A.H. Buckley ◽  
...  
Keyword(s):  
Time Resolution ◽  
Photon Counting ◽  
High Time ◽  
High Time Resolution ◽  
Large Telescope ◽  
Visible Imaging

scholarly journals High Time Resolution Spectroscopy of Short Period Variable Objects

2004 ◽  
Vol 194 ◽  
pp. 263-263
Author(s):  
R. Michel ◽  
J. L. A. Fordham
Keyword(s):  
Time Resolution ◽  
Photon Counting ◽  
Cataclysmic Variables ◽  
High Time ◽  
High Time Resolution ◽  
Photon Counting Detector ◽  
San Pedro ◽  
Short Period ◽  
Period Variable ◽  
Detector Technology

Photon counting detector technology allows high time resolution spectroscopy on sources such as pulsars and cataclysmic variables. Here we report on first observing trials on Cvs in a high time resolution mode undertaken with the MIC photon counting detector (Fordham et al. 2000) on the 2.1m telescope at San Pedro Martir Observatory.

scholarly journals Microsecond polarimetry of the repeating FRB 20180916B

2020 ◽  
Author(s):  
Kenzie Nimmo ◽  
Jason Hessels ◽  
Aard Keimpema ◽  
Anne Archibald ◽  
James Cordes ◽  
...  
Keyword(s):  
Time Resolution ◽  
Position Angle ◽  
High Time ◽  
Dispersion Measure ◽  
High Time Resolution ◽  
Radio Bursts ◽  
Signal To Noise ◽  
Propagation Effects ◽  
Local Medium ◽  
Very High

Abstract Fast radio bursts (FRBs) exhibit a wide variety of spectral, temporal and polarimetric properties, which can unveil clues into their emission physics and propagation effects in the local medium. FRBs are challenging to study at very high time resolution due to the precision needed to constrain the dispersion measure, signal-to-noise limitations, and also scattering from the intervening medium. Here we present the high-time-resolution (down to 1 μs) polarimetric properties of four 1.7-GHz bursts from the repeating FRB 20180916B, which were detected in voltage data during observations with the European VLBI Network. In these bursts we observe a range of emission timescales spanning three orders of magnitude, the shortest component width reaching 3-4 μs (below which we are limited by scattering). We demonstrate that all four bursts are highly linearly polarised (≥ 80%), show no evidence for significant circular polarisation (≤ 15%), and exhibit a constant polarisation position angle during and between bursts. On short timescales (≤ 100 μs), however, there appear to be subtle (few degree) polarisation position angle variations across the burst profiles. These observational results are most naturally explained in an FRB model where the emission is magnetospheric in origin, as opposed to models where the emission originates at larger distances in a relativistic shock.

scholarly journals Astronomical Performances of the Mepsicron, A New Large Area Imaging Photon Counter

1984 ◽  
Vol 78 ◽  
pp. 177-180
Author(s):  
C. Firmani ◽  
L. Gutiérrez ◽  
E. Ruíz ◽  
L. Salas ◽  
G.F. Bisiacchi ◽  
...  
Keyword(s):  
High Resolution ◽  
Time Resolution ◽  
Photon Counting ◽  
High Time ◽  
High Time Resolution ◽  
Spectroscopic Techniques ◽  
Position Sensor ◽  
Large Area ◽  
Photon Counter ◽  
Fabry Perot

The new detector MEPSICRON (microchannel electron position sensor with time resolution) is an image photomultiplier sensor for high spatial and time resolution, working in a photon counting regime. It has been especially designed for deep sky photometric pictures, for high resolution spectrophotometry with single or crossed dispersion spectrographs for long slit spectroscopic techniques, for high time resolution pictures and spectrophotometry especially related with speckles techniques and very fast varying sources as pulsars, and for Fabry-Pérot interferometry.

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