Radiação de Síncrotron no Brasil UVX e Sirius

Pétroff, Y.

doi:10.21800/2317-66602017000300007

Cited by 9 publications

(15 citation statements)

References 14 publications

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“…With the addition of FRB 010312, the FRB event rate of the Magellanic Clouds survey is 1/134 deg −2 h −1 , which is similar to the prediction of Champion et al (2016) of 1/144 deg −2 h −1 from the Parkes HTRU survey, which was based on 10 FRB detections. However, Petroff et al (2019) has recently found a further FRB in this same data set giving an updating event rate closer to our measurement of 1/131 deg −2 h −1 .…”

Section: Resultssupporting

confidence: 90%

“…We can see that the signal is much stronger in the lower part of the observing band. This is similar to FRBs such as FRB 110214 (Petroff et al 2019) andFRB 171019 (Shannon et al 2018). There are also two strong narrow-band RFI signatures close to the band edges, but they do not affect our ability to detect the FRB.…”

Section: Resultssupporting

confidence: 61%

“…Furthermore, the localization of one repeating FRB to a dwarf galaxy at redshift z ∼ 0.2 (Spitler et al 2016;Chatterjee et al 2017;Tendulkar et al 2017), is consistent with the DM-estimated distance and, assuming that the repeating FRBs are similar in origin to those discovered by the Parkes telescope, confirms that FRB progenitors are at cosmic distances. The most successful telescopes for finding FRBs have been Parkes (Lorimer et al 2007 Ravi, Shannon, & Jameson 2015;Petroff et al 2015;Keane et al 2016;Champion et al 2016;Ravi et al 2016;Petroff et al 2017;Bhandari et al 2018;Petroff et al 2019), Molonglo (Caleb et al 2017), ASKAP Macquart et al 2018) and, most recently, CHIME (The CHIME/FRB Collaboration 2019a,b). The distribution of the DMs for the detected FRB population seems to vary between telescopes.…”

Section: Introductionmentioning

confidence: 99%

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A new fast radio burst in the data sets containing the Lorimer burst

Zhang

Hobbs

Dai

et al. 2019

Monthly Notices of the Royal Astronomical Society: Letters

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We report the discovery of a new fast radio burst (FRB), FRB 010312, in archival data from a 1.4 GHz survey of the Magellanic Clouds using the multibeam receiver on the Parkes 64 m-diameter radio telescope. These data sets include the Lorimer burst (FRB 010724), which it pre-dates and which we also re-detect. The new burst has a much higher dispersion measure of 1187 cm −3 pc. The burst is one of the broadest found to date, the second earliest FRB known, and the ninth FRB discovered with a dispersion measure larger than 1000 cm −3 pc. Our discovery indicates that there are likely to be more burst events still to be found in the existing Parkes data archive.

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Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 61%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A new fast radio burst in the data sets containing the Lorimer burst

Zhang

Hobbs

Dai

et al. 2019

Monthly Notices of the Royal Astronomical Society: Letters

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“…Radio telescopes working at low radio frequencies (<300 MHz) are yet to detect any FRBs, despite some efforts to shadow telescopes operating at higher frequencies while the later achieve detections (Sokolowski et al 2018). A useful database to track the current state of published FRB detections is available online at http://frbcat.org (Petroff et al 2017).…”

Section: Introductionmentioning

confidence: 99%

A Search of TESS Full-frame Images for a Simultaneous Optical Counterpart to FRB 181228

Tingay

Yang

2019

ApJ

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FRB181228 was detected by the Molonglo Synthesis Radio Telescope (MOST) at a position and time coincident with Transiting Exoplanet Survey Satellite (TESS) observations, representing the first simultaneous multi-wavelength data collection for a Fast Radio Burst (FRB). The large imaged field-ofview of TESS allows a search over the uncertainty region produced by MOST. However, the TESS pixel scale of 21 and the Full Frame Image (FFI) cadence of 30 minutes is not optimal for the detection of an FOB with a possible millisecond duration. We search the TESS FFIs and find no events with a limiting TESS magnitude of 16, assuming a 30 minute event duration, corresponding to an optical flux density upper limit of approximately 2000 Jy for a ∼ 1 ms signal duration, assuming no signal loss. In addition, the cosmic ray mitigation method for TESS significantly reduces its sensitivity to short timescale transients, which we quantify. We compare our results to the predictions of Yang et al. (2019) and find that the upper limit is a factor of two thousand higher than the predicted maximum optical flux density. However, we find that if FRB181228 had occurred in the galaxy thought to host the nearest FRB detection to date (37 Mpc), an FOB may have been detectable by TESS. In the near future, when CHIME and ASKAP will detect hundreds to thousands of FRBs, TESS may be able to detect FOBs from those rare bright and nearby FRBs within this large population (if more sophisticated cosmic ray excision can be implemented).

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“…The celestial origin of FRB was confirmed by other discoveries. Shortly after Lorimer's work, a growing number of FRBs were discovered with Parkes at 1.4 GHz, either in archival data (Keane et al 2012;Thornton et al 2013;Burke-Spolaor & Bannister 2014) or from real-time searches (Ravi et al 2015;Petroff et al 2015a;Keane et al 2016;Ravi et al 2016;Petroff et al 2017;Bhandari et al 2018). Telescopes other than Parkes have also detected FRBs (Spitler et al 2014;Masui et al 2015;Bannister et al 2017), including interferometers (Caleb et al 2017).…”

mentioning

confidence: 99%

Piggyback search for fast radio bursts using Nanshan 26 m and Kunming 40 m radio telescopes – I. Observing and data analysis systems, discovery of a mysterious peryton

Men

Luo

Chen

et al. 2019

Monthly Notices of the Royal Astronomical Society

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We present our piggyback search for fast radio bursts using the Nanshan 26m Radio Telescope and the Kunming 40m Radio Telescope. The observations are performed in the L-band from 1380 MHz to 1700 MHz at Nanshan and S-band from 2170 MHz to 2310 MHz at Kunming. We built the Roach2-based FFT spectrometer and developed the real-time transient search software. We introduce a new radio interference mitigation technique named zero-DM matched filter and give the formula of the signalto-noise ratio loss in the transient search. Though we have no positive detection of bursts in about 1600 and 2400 hours data at Nanshan and Kunming respectively, an intriguing peryton was detected at Nanshan, from which hundreds of bursts were recorded. Perytons are terrestrial radio signals that mimic celestial fast radio bursts. They were first reported at Parkes and identified as microwave oven interferences later. The bursts detected at Nanshan show similar frequency swept emission and have double-peaked profiles. They appeared in different sky regions in about tens of minutes observations and the dispersion measure index is not exactly 2, which indicates the terrestrial origin. The peryton differs drastically from the known perytons detected at Parkes, because it appeared in a precise period of p = 1.71287 ± 0.00004 s. Its origin remains unknown.

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Radiação de Síncrotron no Brasil UVX e Sirius

Cited by 9 publications

References 14 publications

A new fast radio burst in the data sets containing the Lorimer burst

A new fast radio burst in the data sets containing the Lorimer burst

A Search of TESS Full-frame Images for a Simultaneous Optical Counterpart to FRB 181228

Piggyback search for fast radio bursts using Nanshan 26 m and Kunming 40 m radio telescopes – I. Observing and data analysis systems, discovery of a mysterious peryton

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