تقرير
A simultaneous search for prompt radio emission associated with the short GRB 170112A using the all-sky imaging capability of the OVRO-LWA
| العنوان: | A simultaneous search for prompt radio emission associated with the short GRB 170112A using the all-sky imaging capability of the OVRO-LWA |
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| المؤلفون: | Anderson, Marin M., Hallinan, Gregg, Eastwood, Michael W., Monroe, Ryan M., Vedantham, Harish K., Bourke, Stephen, Greenhill, Lincoln J., Kocz, Jonathon, Lazio, T. Joseph W., Price, Danny C., Schinzel, Frank K., Wang, Yuankun, Woody, David P. |
| سنة النشر: | 2017 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - High Energy Astrophysical Phenomena |
| الوصف: | We have conducted the most sensitive low frequency (below 100 MHz) search to date for prompt, low-frequency radio emission associated with short-duration gamma-ray bursts (GRBs), using the Owens Valley Radio Observatory Long Wavelength Array (OVRO-LWA). The OVRO-LWA's nearly full-hemisphere field-of-view ($\sim20$,$000$ square degrees) allows us to search for low-frequency (sub-$100$ MHz) counterparts for a large sample of the subset of GRB events for which prompt radio emission has been predicted. Following the detection of short GRB 170112A by Swift, we used all-sky OVRO-LWA images spanning one hour prior to and two hours following the GRB event to search for a transient source coincident with the position of GRB 170112A. We detect no transient source, with our most constraining $1\sigma$ flux density limit of $650~\text{mJy}$ for frequencies spanning $27~\text{MHz}-84~\text{MHz}$. We place constraints on a number of models predicting prompt, low-frequency radio emission accompanying short GRBs and their potential binary neutron star merger progenitors, and place an upper limit of $L_\text{radio}/L_\gamma \lesssim 7\times10^{-16}$ on the fraction of energy released in the prompt radio emission. These observations serve as a pilot effort for a program targeting a wider sample of both short and long GRBs with the OVRO-LWA, including bursts with confirmed redshift measurements which are critical to placing the most constraining limits on prompt radio emission models, as well as a program for the follow-up of gravitational wave compact binary coalescence events detected by advanced LIGO and Virgo. Comment: 14 pages, 5 figures, ApJ submitted |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.3847/1538-4357/aad2d7 |
| URL الوصول: | http://arxiv.org/abs/1711.06665 |
| رقم الأكسشن: | edsarx.1711.06665 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.3847/1538-4357/aad2d7 |
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