Sky Event Reporting Metadata Version 2.0

Seaman, R.; Williams, R. D.; Allan, A.; Barthelmy, S. D.; Bloom, J.; Brewer, John M.; Denny, Robert B.; Fitzpatrick, Mike; Graham, Matthew; Gray, Norman; Hessman, F. V.; Márka, S.; Rots, A. H.; Vestrand, Tom; Woźniak, P. R.

doi:10.5479/ads/bib/2011ivoa.spec.0711s

Cited by 33 publications

(31 citation statements)

References 0 publications

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“…The automation ranges from the reception of alerts to preliminary analysis results. This system is a software chain which receives alerts 1 in the VOEvent [8] format defined by the International Virtual Observatory Alliance 2 . All alerts pass through a processing and filtering facility with each alert being correlated to science requirements defined by the Collaboration.…”

Section: Follow-up Proceduresmentioning

confidence: 99%

GRB Observations with H.E.S.S. II

Hoischen¹,

Balzer²,

Bissaldi³

et al. 2017

Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017)

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The High Energy Stereoscopic System (H.E.S.S.) has been searching for counterparts of Gamma Ray Bursts (GRBs) for many years. In 2012 the system was upgraded with a fifth 28 m diameter telescope (CT5) which is equipped with faster motors for rapid repointing, marking the start of the second phase of H.E.S.S. operation (H.E.S.S. II). CT5s large light collection area of 600 m 2 improves the sensitivity to low-energy gamma-rays and even extends the energy range below 100 GeV. The search for counterparts continues now in the energy range of tens of GeV to tens of TeV. A detection in this energy range would open a new window to the part of the spectrum of these highly energetic explosions which Fermi-LAT has only successfully detected in a reduced subset of events, with rather limited statistics. In the past years, H.E.S.S. has performed followup observations based on GRB detections by Swi f t-BAT and Fermi-GBM/-LAT. This Target of Opportunity observation program was carried out with a generalised Target of Opportunity Alert system. This contribution will highlight key features of the Target of Opportunity Alert system, present follow-up statistics of GRBs as well as detailed results of promising follow-up observations.

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Section: Follow-up Proceduresmentioning

confidence: 99%

GRB Observations with H.E.S.S. II

Hoischen¹,

Balzer²,

Bissaldi³

et al. 2017

Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017)

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“…We present the upgraded MWA rapid-response system, which now responds to transient alerts transmitted via the Virtual Observatory Event standard (VOEvent; Seaman et al 2011), that provide a machine readable format for the communication of astrophysical events. All of the events that are distributed via the GCN are also distributed as VOEvents 5 .…”

Section: A Rapid-response System For the Mwamentioning

confidence: 99%

A VOEvent-based automatic trigger system for the Murchison Widefield Array

Hancock

Anderson

Williams

et al. 2019

Publ. Astron. Soc. Aust.

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The Murchison Widefield Array (MWA) is an electronically steered low frequency (< 300 MHz) radio interferometer, with a 'slew' time less than 8 seconds. Low frequency (∼ 100 MHz) radio telescopes are ideally suited for rapid-response follow-up of transients due to their large field of view, the inverted spectrum of coherent emission, and the fact that the dispersion delay between a 1GHz and 100MHz pulse is on the order of 1 − 10 min for dispersion measures of 100 − 2000 pc/cm 3 . The MWA has previously been used to provide fast follow up for transient events including gamma-ray bursts, fast radio bursts, and gravitational waves, using systems that respond to gamma-ray coordinates network (GCN) packet-based notifications. We describe a system for automatically triggering MWA observations of such events, based on VOEvent triggers, which is more flexible, capable, and accurate than previous systems. The system can respond to external multi-messenger triggers, which makes it well-suited to searching for prompt coherent radio emission from gamma-ray bursts, the study of fast radio bursts and gravitational waves, single pulse studies of pulsars, and rapid follow-up of high-energy superflares from flare stars. The new triggering system has the capability to trigger observations in both the regular correlator mode (limited to ≥ 0.5 s integrations) or using the Voltage Capture System (VCS, 0.1 ms integration) of the MWA, and represents a new mode of operation for the MWA. The upgraded standard correlator triggering capability has been in use since MWA observing semester 2018B (July-Dec 2018), and the VCS and buffered mode triggers will become available for observing in a future semester.

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“…While some transient events fade out quickly in a specific wavelength, they might still be visible at other wavelengths. Generation and transmission of such alerts between telescopes in an automated way can be done through the IVOA standard VOEvent [2] and its Transmission Protocol [3]. These two protocols are nowadays widely used by the community, from Fast Radio Bursts [4] to Solar and Planetary Sciences [5].…”

Section: Alerts and Follow-up Observationsmentioning

confidence: 99%