Recent Results from the EVN Mk IV Data Processor at JIVE

نویسنده

  • R. M. Campbell
چکیده

Recent achievements at the EVN Mk IV data processor at JIVE include decreasing the read-out time for the whole correlator to 0.25 s (or 0.125 s for half the correlator), improving the end quality of user data (e.g., applying an improved 2-bit van Vleck correction), developing new astronomical capabilities (e.g., oversampling to ×4, wider-field mapping), and strengthening liaison procedures with PIs (e.g., pipelining, the EVN Archive facility). At the same time, the move to a disk-based EVN and regular incorporation of FTP fringe-checks is well underway, resulting in more reliable data quality. We will review these developments, highlighting how they may broaden the kinds of astronomy you can do. We’ll also go over some measures you can take to help you get the most out of these new/improved features.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Towards a Large Field of View Archive for the European VLBI Network

Traditionally VLBI observations focus on a small patch of sky and image typically a few 100 mas around a bright source, which is often used to self-calibrate the data. High spectral and time resolution is needed to image a larger area, in principle up to the primary beam of the individual telescopes. The EVN MkIV data processor at JIVE is being upgraded to make such high resolution data its sta...

متن کامل

¹îääá Óó××öúúøøóò× Óó Ëae¾¼¼½½ñ ß Ò Ó«¹¹üü× Êê Òòòòòøø

Studying transient phenomena with the Very Long Baseline Interferometry (VLBI) technique faces severe difficulties because the turnaround time of the experiments from the observations to the scientific result is rather long. The e-VLBI technique has made it possible to transfer the data from a number of European VLBI Network (EVN) telescopes to the central data processor at JIVE through optical...

متن کامل

e-VLBI... a Wide-field Imaging Instrument with Milliarcsecond Resolution & microJy Sensitivity

The European VLBI Network (EVN) is in the process of establishing an e-VLBI array in which the radio telescopes and the EVN correlator at JIVE are connected in real-time, via high-speed national fibre optic networks and the pan-European research network, GÉANT. This paper reports on recent test results, including the production of the first real-time e-VLBI astronomical image. In a parallel and...

متن کامل

First e - VLBI observations of GRS 1915 + 105 3

We present results from the first successful open call e-VLBI science run, observing the X-ray binary GRS1915+105. e-VLBI science allows the rapid production of VLBI radio maps, within hours of an observation rather than weeks, facilitating a decision for follow-up observations. A total of 6 telescopes observing at 5 GHz across the European VLBI Network (EVN) were correlated in real time at the...

متن کامل

First e - VLBI observations of GRS 1915 + 105

We present results from the first successful open call e-VLBI science run, observing the X-ray binary GRS1915+105. e-VLBI science allows the rapid production of VLBI radio maps, within hours of an observation rather than weeks, facilitating a decision for follow-up observations. A total of 6 telescopes observing at 5 GHz across the European VLBI Network (EVN) were correlated in real time at the...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2004