6 papers
Probing inflationary features with galaxy ultraviolet luminosity function observables
Sandeep Kumar Acharya
We use the galaxy ultraviolet luminosity function measurements at to constrain modification to standard inflationary power spectrum. These observables are sensitive to the…
The role of the galaxy stellar mass function in determining the cosmological distribution of astrophysical transients with applications to fast radio bursts and merging binary black holes
Sandeep Kumar Acharya
The cosmological distribution and formation rate of compact astrophysical objects such as fast radio bursts (FRBs) are typically assumed to be proportional to a linear combination…
Utilizing localized fast radio bursts to constrain their progenitors and the expansion history of the Universe
Sandeep Kumar Acharya, Paz Beniamini
Fast radio bursts (FRBs) are increasingly being used for cosmological applications such as measuring the Hubble constant and baryon abundance. The increasing number of localized FR…
Persistent radio sources associated with fast radio bursts: Implications from magnetar progenitors
Sk. Minhajur Rahaman, Sandeep Kumar Acharya, Paz Beniamini +1
The rare association of three persistent radio sources (confirmed PRS1 and PRS2, candidate PRS3) with repeating fast radio bursts (FRB 20121102A, 20190520B, 20201124A) offers a uni…
Redshift dependence of FRB host dispersion measures across cosmic epochs
Sandeep Kumar Acharya, Paz Beniamini
We constrain the redshift dependence of (rest frame) host galaxy dispersion measures of localized Fast Radio Bursts (FRBs) by assuming it to vary as a simple power law ($\propto (1…
Features and prospects for kilonova remnant detection with current and future surveys
Sandeep Kumar Acharya, Paz Beniamini, Kenta Hotokezaka
We study the observable spectral and temporal properties of kilonova remnants (KNRs) analytically, and point out quantitative differences with respect to supernova remnants. We pro…