Conveners
What Can We Learn from a Growing Sample of Fast Radio Bursts?: Block 1
- Victoria Kaspi (McGill University)
- Duncan Lorimer (WVU)
- Bing Zhang (University of Nevada, Las Vegas)
What Can We Learn from a Growing Sample of Fast Radio Bursts?: Block 2
- Victoria Kaspi (McGill University)
- Duncan Lorimer (WVU)
- Bing Zhang (University of Nevada, Las Vegas)
Description
This parallel sessions will cover Fast Radio Bursts (FRBs), a recently identified cosmic phenomenon consisting of few-millisecond radio bursts arriving from far outside the Milky Way, even from cosmological distances. The origins of FRBs are currently unknown. These two parallel sessions will cover the current observational status of FRBs, including results of recent and ongoing FRB surveys, current theoretical models of FRBs, as well as observational multi-wavelength follow-up of FRBs currently underway with the goal of constraining FRB models and exploiting FRBs as novel cosmic probes.
Searching for fast radio bursts with MeerKAT will be discussed.
Fast radio bursts (FRBs) are amongst the most energetic objects in our Universe, but despite a number of plausible models, their origin remains a mystery. Thanks to recent advances using the Australian Square Kilometre Array Pathfinder (ASKAP) radio telescope we can now routinely localise FRBs to the galaxies they originate form, and in some cases even pinpoint the burst to a region within the...
Over the past decade, population studies of fast radio bursts (FRBs) have been challenging to undertake due to the small number of known sources detected with different telescopes and detection pipelines. However, the Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst (CHIME/FRB) project has now detected a large sample of FRBs which is well suited for such studies. The first...
Apertif, the wide-field receiver system currently operating on the Westerbork Synthesis Radio Telescope, offers an unprecedented combination of sensitivity and speed at 1.4 GHz. Its time-domain supercomputing back end (ARTS) performs real-time detection and localisation of Fast Radio Bursts (FRBs). In stand-alone mode, this SKA pathfinder is already the globally most productive 1.4 GHz FRB...
The quest for high redshift FRBs is ongoing with telescopes such as FAST and GBT looking for highly dispersed events. If FRB-producing systems exist at early times, such sources would provide new unique ways to probe Cosmic Dawn and Reionization. On one hand, FRB dispersion would allow us to probe the history and topology of Reionization. On the other hand, number counts of high redshift FRBs...
A millisecond periodicity in the signal of fast radio bursts (FRBs) has long been searched for, as such a signal could be present if these sources are rapidly rotating neutron stars. Here we report a periodic separation of 218 ms at a 6-sigma significance in the single components of a 3-s long FRB detected by the CHIME/FRB experiment. With its nine or more single components, this FRB...
Gravitational lensing of fast radio bursts (FRBs) on timescales of nanoseconds to milliseconds is sensitive to the presence of massive bodies up to $100 M_{\odot}$--including brown dwarves, rogue stars, and exotic objects like MACHOs or primordial black holes. The CHIME telescope, a widefield low-frequency radio interferometer operating over the frequency range of 400-800 MHz, detects several...
The Canadian Hydrogen Intensity Mapping Experiment (CHIME) telescope has detected more than 1,000 fast radio bursts (FRBs) with its dedicated transient-search backend (CHIME/FRB). With the goal of localising 1,000 bursts to ~50mas precision in less than two years, CHIME/FRB is now expanding to include a dedicated very long baseline interferometry (VLBI) array of transcontinental outrigger...
With FAST, we detected 1652 pulses from FRB 121102 within a time span of 57 days and a total of about 50 observing hours. On two separate days, the peak burst rate reaching beyond 115 bursts per hour. The burst energy spans three orders of magnitude between ~5e36 to 6e 39 ergs. Tests with a hybrid of real and simulated bursts show that this burst set is 90% complete for E> 3 e37 ergs. The...
The recent discovery of a Galactic fast radio burst (FRB) occurring simultaneously with an X-ray burst (XRB) from the Galactic magnetar SGR J1935+2154 implies that at least some FRBs arise from magnetar activities. We propose that FRBs are triggered by crust fracturing of magnetars, with the burst event rate depending on the magnetic field strength in the crust. Crust fracturing produces...
Fast radio bursts (FRBs) are surprisingly abundant, highly energetic extragalactic signals, the nature of which still remains a mystery. The use of radio interferometers to identify the host galaxies of FRBs and characterise their local environments plays a key role in identifying the progenitor(s) of FRBs. The bursts themselves exhibit complex time-frequency structure and polarimetric...
The origin of Fast Radio Bursts (FRBs) remains a mystery even as we are collecting important roadsigns that point towards preferred source models. A key piece of the puzzle is the search for their multi-wavelength counterparts. Many observations at high energies of FRB sources have been performed to date, but two recent discoveries perhaps provide the most information: the detection last year...
Fast Radio Bursts (FRBs) are extremely energetic, millisecond-duration events of unknown origin. Some FRB sources emit repeat bursts, which offer great opportunities for follow-up observations. The Canadian Hydrogen Intensity Mapping Experiment (CHIME), with 1024 beams observing the sky simultaneously has increased the number of known repeating FRBs by orders of magnitude. The regular daily...
Recurrent magnetar short bursts in the X-ray are one of the defining features of magnetars. I will give a brief background on this phenomenology, some recent results, and discuss how they likely connect to FRBs. I will also highlight the low-twist magnetospheric magnetar model for FRBs which associates FRBs with short bursts that transpire in particular low charge density states of mature...
Over the last 5 years, the amount of data we have about Fast Radio Bursts has grown at a rapid, indeed accelerating rate. The next 5 years promises to bring even more data and, with it, the opportunity to really tackle some key questions both in our understanding of FRB physics and of the Universe on large scales. In this talk we will focus on the role FRBs may play as tools of discovery and...
