Bassa, C.

Cooper, A.

Gourdji, K.

Hessels, J.

Kondratiev, V.

Michilli, D.

Pleunis, Z.

Rowlinson, A.

Wijers, R.

English

We report on a non-detection of radio bursts from the soft gamma-ray repeater SGR 1935+2154 with LOFAR. These LOFAR observations had the goals of i. studying the detailed morphology of the radio bursts in order to potentially compare with the characteristic time-frequency structure seen in repeating FRBs (Hessels et al. 2019) and ii. studying interstellar scattering along this line of sight

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UvA-DARE is a service provided by the library of the University of Amsterdam (https://dare.uva.nl)UvA-DARE (Digital Academic Repository)A LOFAR high time resolution search for radio bursts from SGR 1935+2154Bassa, C.; Hessels, J.; Kondratiev, V.; Michilli, D.; Pleunis, Z.; Cooper, A.; Gourdji, K.;Rowlinson, A.; Wijers, R.Publication date2020Document VersionFinal published versionPublished inThe astronomer's telegramLicenseUnspecifiedLink to publicationCitation for published version (APA):Bassa, C., Hessels, J., Kondratiev, V., Michilli, D., Pleunis, Z., Cooper, A., Gourdji, K.,Rowlinson, A., & Wijers, R. (2020). A LOFAR high time resolution search for radio bursts fromSGR 1935+2154. The astronomer's telegram, 13707.http://www.astronomerstelegram.org/?read=13707General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s)and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an opencontent license (like Creative Commons).Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, pleaselet the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the materialinaccessible and/or remove it from the website. Please Ask the Library: https://uba.uva.nl/en/contact, or a letterto: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. Youwill be contacted as soon as possible.Download date:10 Mar 2023ATel #13707: A LOFAR high time resolution search for radio bursts from SGR 1935+2154http://www.astronomerstelegram.org/?read=13707[19-3-2021 12:45:58]OutsideGCNIAUCsOther ATel on Twitter and FacebookATELstreamATel Community SitePost | Search | PoliciesCredential | Feeds | Email19 Mar 2021; 11:45 UTThis space for free for your conference.[ Previous | Next | ADS  ]A LOFAR high time resolution search for radio burstsfrom SGR 1935+2154ATel #13707; Cees Bassa (ASTRON), Jason Hessels (ASTRON/UvA), Vlad Kondratiev(ASTRON), Daniele Michilli (McGill), Ziggy Pleunis (McGill), Alex Cooper (UvA), KellyGourdji (UvA), Antonia Rowlinson (ASTRON/UvA), Ralph Wijers (UvA)on 4 May 2020; 09:20 UTCredential Certification: Cees Bassa (cbassa@gmail.com)Subjects: Radio, Soft Gamma-ray Repeater, Fast Radio Burst, MagnetarReferred to by ATel #: 13713, 13769, 13816We report on a non-detection of radio bursts from the soft gamma-ray repeater SGR 1935+2154with LOFAR. These LOFAR observations had the goals of i. studying the detailed morphology ofthe radio bursts in order to potentially compare with the characteristic time-frequency structureseen in repeating FRBs (Hessels et al. 2019) and ii. studying interstellar scattering along this lineof sight. SGR 1935+2154 was observed for 2 hours starting 2020 April 30, 03:30UTC using atied-array beam from the 24 LOFAR High-Band Antenna (HBA) core stations. Complex voltageswere recorded from observing frequencies between 110 to 180 MHz, and coherently dedispersedto the known dispersion measure (DM=332.8 pc/cc) of the burst detected by Scholz et al. (2020,ATel #13681) and Bochenek et al. (2020, ATel #13684). Scholz et al. (2020, ATel #13681) findsub-burst widths of ~5 ms with ~5-10 ms of scattering at 400 MHz. At 150 MHz, we thus expect~250-500 ms of scattering. Therefore, the resulting dynamic spectra were searched for burstsbetween DMs of 325 to 375 pc/cc with widths in the range of 0.65 to 900 ms. No bursts were seendown to a fluence of 37 Jy ms for a 20-ms burst at S/N~7 and 199 Jy ms for a 200-ms burst atS/N~12. A simultaneous tied-array beam was pointed towards the millisecond pulsar B1937+21,offset by 1.3 degrees from SGR 1935+2154. The analysis pipeline detected several dozen giantpulses from PSR B1937+21. Analysis of LOFAR imaging observations obtained on 2020 April29 is ongoing.Singe pulse plotsRelated14396 Erratum to ATEL 1439514395 Upper limits on thecontinuum radio emission ofSGR J1935+2154 fromuGMRT observations14382 Upper limits on the radiofluence of the most recent X-ray bursts fromSGR1935+215414359 Fermi GBM Observations ofSGR J1935+215414151 Search for burst andperiodic radio emission fromSGR1935+2154 using GBTobservations at 800 MHz andS-band14087 SGR 1935+2154 October 8radio bursts: No gamma-raycounterparts inINTEGRAL/SPI-ACS and IBISobservations14084 FAST detection of radiobursts and pulsed emissionfrom SGR J1935+215414080 Properties of the CHIME/FRB2020 October 8 detections ofSGR 1935+215414077 Upper limit to radio burstsfrom SGR 1935+2154 (ATEL14074) by STARE214075 Swift/BAT detection of a softX-ray flare possiblyassociated with CHIME/FRBdetection of SGR 1935+215414074 CHIME/FRB Detection ofThree More Radio Burstsfrom SGR 1935+215413838 Non-detection of radiopulsations fromSGR1935+2154 byCHIME/Pulsar13816 MWA low-frequency radioimaging of SGR 1935+215413799 Radio pulsation and imagingstudy of SGR J1935+2154with the uGMRT13786 A search for persistent radioemission and millisecond-duration radio bursts fromATel #13707: A LOFAR high time resolution search for radio bursts from SGR 1935+2154http://www.astronomerstelegram.org/?read=13707[19-3-2021 12:45:58]SGR 1935+2154 using theEuropean VLBI Network13783 Marginal detection of radiopulsations from themagnetar SGR 1935+2154with the Medicina NorthernCross13778 Search for radio pulsationsfrom SGR 1935+2154 withthe uGMRT13777 Radio pulsation and imagingstudy of SGR J1935+2154with the uGMRT13773 A uGMRT search for low-frequency persistent radioemission and afterglow fromSGR 1935+215413769 A search for radio pulsationsfrom SGR J1935+215413748 SGR 1935+2154: A catalog ofX-ray burst times fromSwift/BAT during theongoing 2020 activity period13739 Search for radio bursts fromSGR 1935+2154 at 408 MHzwith the Northern Cross13735 Simultaneous multi-frequency limits on radioemission at the time of abright X-ray burst from SGR1935+215413729 Insight-HXMT's continuedobservation plan for SGRJ1935+215413726 Arecibo search for radiobursts following a previousSGR-like activity from SGR1935+215413723 SRG observations of SGR1935+2154: four days priorto the FRB event13721 Search for a neutrinocounterpart to the X-ray andmillisecond radio burstsobserved from SGR1935+2154, with ANTARES13720 Â X-ray monitoring of theactive magnetar SGR1935+215413713 A Search for Radio Burstsand Periodic Emission fromSGR 1935+214 at High RadioFrequencies using the DeepSpace Network13707 A LOFAR high timeresolution search for radiobursts from SGR 1935+215413704 Geocentric time correctionfor Insight-HXMT detectionof the x-ray counterpart ofthe FRB by CHIME andSTARE2 from SGR1935+215413703 Insight-HXMT X-ray and hardX-ray upper limits to theradio burst detected byFAST from SGR 1935+215413699 A highly polarised radioburst detected from SGR1935+2154 by FAST13697 FAST: No detection of fastradio bursts from SGRJ1935+215413696 Insight-HXMT X-ray and hardX-ray detection of the doublepeaks of the Fast RadioBurst from SGR 1935+215413693 VLA Monitoring of SGR1935+2154 on 2020, April 3013692 Update on Insight-HXMTdetection of a bright short x-ray counterpart of the FastRadio Burst from SGR1935+2154: No intrinsicdelay between radio and X-ray flares13690 VLA search for persistentand bursting emission fromSGR 1935+215413689 SGR 1935+2154 bursts:IceCube neutrino searchKonus-Wind observation ofATel #13707: A LOFAR high time resolution search for radio bursts from SGR 1935+2154http://www.astronomerstelegram.org/?read=13707[19-3-2021 12:45:58]13688hard X-ray counterpart of theradio burst from SGR1935+215413687 Insight-HXMT detection of abright short x-raycounterpart of the FastRadio Burst from SGR1935+215413686 AGILE detection of a hard X-ray burst in temporalcoincidence with a radioburst from SGR 1935+215413685 INTEGRAL IBIS and SPI-ACSdetection of a hard X-raycounterpart of the radioburst from SGR 1935+215413684 Independent detection of theradio burst reported in ATel#13681 with STARE213682 AGILE observations of theSGR 1935+2154 "burstforest"13681 A bright millisecond-timescale radio burst fromthe direction of the Galacticmagnetar SGR 1935+215413679 SGR 1935+2154: Swiftdetection of enhanced X-rayemission and dust scatteredhalo13678 Burst forest from SGR1935+2154 as detected withNICER13675 A Forest of Bursts from SGR1935+21546376 Upper limits on the pulsedradio emission of SGR1935+2154 from the OotyRadio Telescope and theGiant Meterwave RadioTelescope6371 Parkes upper limits on thepulsed radio emission ofSGR 1935+21546370 Chandra discovery of 3.2s X-ray pulsations from SGR1935+21546299 SGR 1935+2154 Swift-BATarchival data search[ Telegram Index ]R. E. Rutledge, Editor-in-ChiefDerek Fox, Editor

A LOFAR high time resolution search for radio bursts from SGR 1935+2154

https://pure.uva.nl/ws/files/58952471/A_LOFAR_high_time_resolution_search_for_radio_bursts_from_SGR_1935_2154.pdf

A LOFAR high time resolution search for radio bursts from SGR 1935+2154

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