19 citations · 31 across the 8 of their papers we have counts for
10 papers
Complete Second-Order Relativistic Derivation of the Observed Pulsar Timing Modulations
Matteo Magi, Jaiyul Yoo
We present a fully nonlinear relativistic description of the observed pulsar timing modulations, defined through the ratio of the proper-time intervals between two successive emiss…
Black holes with torsion hair in cubic Holst-type Poincaré gauge gravity: from singular to regular geometries
Sebastian Bahamonde, Jorge Gigante Valcarcel, Matteo Magi
Motivated by the singularity theorems of Poincaré Gauge (PG) theory, we investigate extensions of the Holst quadratic model by introducing cubic order invariants constructed from t…
Exact Equivalence of the Observed Redshift and the Pulsar Timing Modulation in the Infinitesimal-Pulse Limit
Matteo Magi, Jaiyul Yoo
The pulsar timing arrays (PTA) collect the times of arrival of radio signals from the millisecond pulsars, and gravitational waves can modulate their arrival times. Although the PT…
Perturbative and numerical study of nonlinear relativistic effects in weak lensing
Matteo Magi, Francesca Lepori, Julian Adamek
The standard weak lensing formalism assumes that the lensing map relating the observed image of a source to its intrinsic shape depends only on the deflection angle. We show that t…
Cosmic Dipoles from Large-Scale Structure Surveys
Jaiyul Yoo, Matteo Magi, Dragan Huterer
Large-scale structure surveys can be used to measure the dipole in the cosmic microwave background (CMB), in the luminosity distances inferred from type-Ia supernova observations,…
Infrared Sensitivity of Cosmological Probes In The Presence of Axion Field Fluctuations
Matteo Magi, Robert Brandenberger, Jaiyul Yoo
We study the effects of long wavelength entropy fluctuations on cosmological probes such as galaxy clustering, luminosity distance, and CMB temperature anisotropies. Specifically,…
Infrared Sensitivity of Cosmological Probes in Horndeski Theory
Matteo Magi, Jaiyul Yoo
Cosmological probes constructed in large-scale surveys are independent of the underlying theory of gravity, and their relativistic descriptions are indeed applicable to any theory…
Conditions for the Absence of Infrared Sensitivity in Cosmological Probes in Any Gravity Theories
Matteo Magi, Jaiyul Yoo
Large-scale surveys allow us to construct cosmological probes such as galaxy clustering, weak gravitational lensing, the luminosity distance, and cosmic microwave background anisot…
Infrared (in)sensitivity of relativistic effects in cosmological observable statistics
Ermis Mitsou, Jaiyul Yoo, Matteo Magi
The relativistic effects in cosmological observables contain critical information about the initial conditions and gravity on large scales. Compared to the matter density fluctuati…
Second-order gauge-invariant formalism for the cosmological observables: Complete verification of their gauge-invariance
Matteo Magi, Jaiyul Yoo
Accounting for all the relativistic effects, we have developed the fully nonlinear gauge-invariant formalism for describing the cosmological observables and presented the second-or…