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DTSTART;TZID=Australia/Sydney:20210707T150000
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DTSTAMP:20260514T140424
CREATED:20250819T102351Z
LAST-MODIFIED:20250819T102352Z
UID:14996-1625670000-1625673600@www.atnf.csiro.au
SUMMARY:S&A Colloquium: JinLin Han (NAOC)
DESCRIPTION:The FAST Galactic Plane Pulsar Snapshot survey\n\nAbstract\n\nThe Five-hundred-meter Aperture Spherical radio Telescope (FAST)\, that incorporates an L-band 19-beam receiver with a system temperature of about 20 K\, is the most sensitive radio telescope utilized for discovering pulsars. We designed the snapshot observation mode for a FAST key science project\, the Galactic Plane Pulsar Snapshot (GPPS) survey. The integration time for each pointing is 300 seconds so that the GPPS observations for a cover can be made in 21 minutes. The goal of the GPPS survey is to discover pulsars within the Galactic latitude of ±10deg from the Galactic plane\, and the highest priority is given to the inner Galaxy within ±5deg. \n\nUp to now\, the GPPS survey has discovered 212 pulsars\, including currently the faintest pulsars which cannot be detected by other telescopes\, pulsars with extremely high dispersion measures (DMs) which challenge the currently widely used models for the Galactic electron density distribution\, pulsars coincident with supernova remnants\, 42 millisecond pulsars\, 17 binary pulsars\, some nulling and mode-changing pulsars and rotating radio transients (RRATs). The follow-up observations for confirmation of new pulsars have polarization-signals recorded for polarization profiles of the pulsars. Re-detection of previously known pulsars in the survey data also leads to significant improvements in parameters for 64 pulsars. The GPPS survey discoveries are published and will be updated at http://zmtt.bao.ac.cn/GPPS/. \nWatch recording\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/sa-colloquium-jinlin-han-naoc/
LOCATION:NSW
CATEGORIES:Colloquia
ATTACH;FMTTYPE=image/jpeg:https://www.atnf.csiro.au/wp-content/uploads/2024/12/Colloq-07072021.jpg
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DTSTART;TZID=Australia/Sydney:20210721T150000
DTEND;TZID=Australia/Sydney:20210721T160000
DTSTAMP:20260514T140424
CREATED:20250819T102244Z
LAST-MODIFIED:20250819T102245Z
UID:14995-1626879600-1626883200@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Danny Price & Marcin Sokolowski (ICRAR / Curtin)
DESCRIPTION:A High-Speed All-Sky Monitor for Fast Radio Bursts and Technosignatures\n\nAbstract\n\nFast Radio Bursts (FRB) are one of the most intriguing transient phenomena discovered in the recent years\, and recently observed down to 100-MHz frequencies. I will present the first southern hemisphere all-sky real-time imaging and radio-transient monitoring system\, implemented on two prototype stations of the low frequency (50–350 MHz) component of the Square Kilometre Array (SKA-Low)\, the Engineering Development Array 2 (EDA2) and Aperture Array Verification System 2 (AAVS2). For the last two years these prototypes have been regularly collecting data to verify their performance against the SKA-Low specifications and simulations\, including making all-sky images every two seconds used for transient searches. The transient identification algorithm used 2-second difference images to find candidates and required their detection in the images from both stations. In approximately 360 hours of data using a single coarse channel (0.926 MHz bandwidth)\, we identified a few episodes of extremely bright pulses from the pulsar PSR B0950+08 and several transients from an unknown object\, which is currently under investigation. We also determined preliminary upper limits on surface density of radio transients at a 2-second timescale. We plan to increase the bandwidth by at least 40 times (to about 40 MHz) and time resolution to 10 ms or better in order to improve the sensitivity by two orders of magnitude and start detecting hundreds of FRBs per year. This upgrade will transform the stations into low-frequency FRB survey machines looking for FRBs and signals from extraterrestrial intelligence in high-resolution all-sky images\, which will pave the way to similar searches with hundreds of SKA-Low stations. \nWatch recording\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/sa-colloquium-danny-price-marcin-sokolowski-icrar-curtin/
LOCATION:NSW
CATEGORIES:Colloquia
ATTACH;FMTTYPE=image/jpeg:https://www.atnf.csiro.au/wp-content/uploads/2024/12/Colloq-21072021.jpg
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