The Effect of Gravitational Lensing on Fast Transient Event Rates
arXiv:2210.09487 · doi:10.1093/mnras/stac3013
Abstract
Fast cosmological transients such as fast radio bursts (FRBs) and gamma-ray bursts (GRBs) represent a class of sources more compact than any other cosmological object. As such they are sensitive to significant magnification via gravitational lensing from a class of lenses which are not well-constrained by observations today. Low-mass primordial black holes are one such candidate which may constitute a significant fraction of the Universe's dark matter. Current observations only constrain their density in the nearby Universe, giving fast transients from cosmological distances the potential to form complementary constraints. Motivated by this, we calculate the effect that gravitational lensing from a cosmological distribution of compact objects would have on the observed rates of FRBs and GRBs. For static lensing geometries, we rule out the prospect that all FRBs are gravitationally lensed for a range of lens masses and show that lens masses greater than can be constrained with 8000 un-localised high fluence FRBs at 1.4GHz, as might be detected by the next generation of FRB-finding telescopes.
arXiv comment10 pages (+7 Supplementary). Accepted to MNRAS
References in corpus (34)
- SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
- Cosmic Star Formation History
- Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
- The Supernova -- Gamma-Ray Burst Connection
- Primordial Black Holes as Dark Matter: Recent Developments
- A bright millisecond-duration radio burst from a Galactic magnetar
- Gamma-Ray Bursts in the Swift Era
- The Cosmic Energy Inventory
- A Living Theory Catalogue for Fast Radio Bursts
- Dense magnetized plasma associated with a fast radio burst
- Multiple Images of a Highly Magnified Supernova Formed by an Early-Type Cluster Galaxy Lens
- Lensing of Fast Radio Bursts as a Probe of Compact Dark Matter
- Limits on stellar-mass compact objects as dark matter from gravitational lensing of type Ia supernovae
- A peculiar hard X-ray counterpart of a Galactic fast radio burst
- A New Method for Determining Cumulative Gravitational Lensing Effects in Inhomogeneous Universes
- Prompt and delayed emission properties of Gamma-Ray Bursts observed with BeppoSAX
- Extra-galactic high-energy transients: event rate densities and luminosity functions
- Strong gravitational lensing of explosive transients
- On the FRB luminosity function -- II. Event rate density
- (Mis-)Interpreting supernovae observations in a lumpy universe
- Interpretation of the Hubble diagram in a nonhomogeneous universe
- Constraining dark matter halo properties using lensed SNLS supernovae
- FRB event rate counts II --- fluence, redshift and dispersion measure distributions
- Evidence for an intermediate-mass black hole from a gravitationally lensed gamma-ray burst
- BURSTT: Bustling Universe Radio Survey Telescope in Taiwan
- Lensing of fast radio bursts: future constraints on primordial black hole density with an extended mass function and a new probe of exotic compact fermion and boson stars
- Wave effects in the microlensing of pulsars and FRBs by point masses
- Swiss-cheese models and the Dyer-Roeder approximation
- The ultraluminous GRB 110918A
- First Constraints on Compact Dark Matter from Fast Radio Burst Microstructure
- Most Lensed Quasars at are Missed by Current Surveys
- Revisiting the Lensed Fraction of High-Redshift Quasars
- On simple analytic models of microlensing amplification statistics
- The - relation for type Ia supernovae, locally inhomogeneous cosmological models, and the nature of dark matter