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Fast radio bursts (FRBs) are millisecond pulses of radio emission of seemingly extragalactic origin. More than 50 FRBs have now been detected, with only one seen to repeat. Here we present a new FRB discovery, FRB 110214, which was detected…

Assuming that Fast Radio Bursts (FRBs) are of extragalactic origin, we have developed a formalism to predict the FRB detection rate and the redshift distribution of the detected events for a telescope with given parameters. We have adopted…

高能天体物理现象 · 物理学 2016-02-17 Apurba Bera , Siddhartha Bhattacharyya , Somnath Bharadwaj , N. D. Ramesh Bhat , Jayaram N. Chengalur

Statistical interpretation of sparsely sampled event rates has become vital for new transient surveys, particularly those aimed at detecting fast radio bursts (FRBs). We provide an accessible reference for a number of simple, but critical,…

天体物理仪器与方法 · 物理学 2016-12-06 Scott Vander Wiel , Sarah Burke-Spolaor , Earl Lawrence , Casey J. Law , Geoffrey C. Bower

Fast radio bursts (FRBs) are extremely strong radio flares lasting several milliseconds, most of which come from unidentified objects at a cosmological distance. They can be apparently repeating or not. In this paper, we analyzed 18…

Fast Radio Bursts (FRBs) are energetic radio bursts that typically last for milliseconds. They are mostly of extragalactic origin, but the progenitors, trigger mechanisms and radiation processes are still largely unknown. Here we present a…

The dispersion measure -- redshift relation of Fast Radio Bursts, $\mathrm{DM}(z)$, has been proposed as a potential new probe of the cosmos, complementary to existing techniques. In practice, however, the effectiveness of this approach…

宇宙学与河外天体物理 · 物理学 2019-11-20 Anthony Walters , Yin-Zhe Ma , Jonathan Sievers , Amanda Weltman

It has been suggested that cosmological gamma-ray bursts (GRBs) can produce the observed flux of cosmic rays at the highest energies. However, recent studies of GRBs indicate that their redshift distribution likely follows that of the…

天体物理学 · 物理学 2009-10-31 S. T. Scully , F. W. Stecker

Two fundamental empirical laws have been established in the analysis of galaxy space distribution. First, recent analyses have revealed that the three dimensional distribution of galaxies and clusters is characterized by large scale…

Recent observations of the galaxy population within rich clusters have found a characteristic luminosity distribution described by a flat (alpha = -1.0) Schechter function which exhibits an upturn at faint absolute magnitudes (B Mag = -18).…

天体物理学 · 物理学 2016-08-30 Simon P. Driver , Steven Phillipps

The redshift distribution of fast radio bursts (FRBs) is not well constrained. The association of the Galactic FRB 200428 with the young magnetar SGR 1935+2154 raises the working hypothesis that FRB sources track the star formation history…

高能天体物理现象 · 物理学 2022-01-20 Rachel C. Zhang , Bing Zhang

Gravitational lensing of fast radio bursts (FRBs) offers an exciting avenue for several cosmological applications. However, it is not yet clear how many such events future surveys will detect nor how to optimally find them. We use the known…

宇宙学与河外天体物理 · 物理学 2023-03-15 Liam Connor , Vikram Ravi

Context. Research over the past three decades has revolutionized cosmology while supporting the standard cosmological model. However, the cosmological principle of Universal homogeneity and isotropy has always been in question, since…

宇宙学与河外天体物理 · 物理学 2014-01-08 Istvan Horvath , Jon Hakkila , Zsolt Bagoly

Baryonic feedback fundamentally alters the total matter distribution on small to intermediate cosmological scales, posing a significant challenge for contemporary cosmological analyses. Direct tracers of the baryon distribution are…

宇宙学与河外天体物理 · 物理学 2025-07-24 Robert Reischke , Steffen Hagstotz

We have searched for weak fast radio burst (FRB) events using a database containing 568,736,756 transient events detected using the Parkes radio telescope between 1997 and 2001. In order to classify these pulses, and to identify likely FRB…

The clustering of galaxies is well characterized by fractal properties, with the presence of an eventual cross-over to homogeneity still a matter of considerable debate. In this letter we discuss the cosmological implications of a fractal…

天体物理学 · 物理学 2009-10-31 M. Joyce , P. W. Anderson , M. Montuori , L. Pietronero , F. Sylos Labini

Fast Radio Bursts (hereafter FRBs) can be used in cosmology by studying the Dispersion Measure (hereafter DM) as a function of redshift. The large scale structure of matter distribution is regarded as a major error budget for such…

宇宙学与河外天体物理 · 物理学 2022-07-27 Chenghao Zhu , Jiajun Zhang

Fast radio burst (FRB) discoveries are occurring rapidly, with thousands expected from upcoming surveys. The dispersion measures (DM) observed for FRB include important information on cosmological distances and the ionization state of the…

宇宙学与河外天体物理 · 物理学 2021-05-20 Mukul Bhattacharya , Pawan Kumar , Eric V. Linder

On small scales the observable Universe is highly inhomogeneous, with galaxies and clusters forming a complex web of voids and filaments. The optical properties of such configurations can be quite different from the perfectly smooth…

宇宙学与河外天体物理 · 物理学 2017-07-19 Viraj A. A. Sanghai , Pierre Fleury , Timothy Clifton

The cosmological expansion cannot produce the reported correlations of the gamma-ray burst timescale and spectral energy with peak flux if the burst model reproduces the BATSE 3B peak-flux distribution for a non-evolving burst source…

天体物理学 · 物理学 2009-10-30 J. J. Brainerd

There are by now ten published detections of fast radio bursts (FRBs), single bright GHz-band millisecond pulses of unknown origin. Proposed explanations cover a broad range from exotic processes at cosmological distances to atmospheric and…