Constraining models of Inflationary Magnetogenesis with NANOGrav

Abstract

Generation of magnetic field during inflation can explain its presence over a wide range of scales in the Universe. In Ref.\cite{sharma2017}, we proposed a model to generate these fields during inflation. These fields have nonzero anisotropic stress which lead to the generation of a stochastic background of gravitational waves (GW) in the early universe. Here we show that for a scenario of magnetogenesis where reheating takes place around QCD epoch, this stochastic GW background lies in the $95\%$ confidence region of the GW signal probed by NANOGrav collaboration. This is the case when the generated electromagnetic field (EM) energy density is $3-10\%$ of the background energy density at the end of reheating. For this case, the values of magnetic field strength $B_0\sim (3.8-6.9)\times 10^{-11}$G and its coherence length $\sim 30$ kpc at the present epoch. These values are for the models in which EM fields are of nonhelical nature. For the helical nature of the fields, these values are $B_0\sim (1.1-1.9)\times 10^{-9}$G and its coherence length $\sim 0.8$ Mpc.

arXiv comment5 pages, 1 figure. arXiv admin note: substantial text overlap with arXiv:1912.12089

References in corpus (80)

• Evidence for strong extragalactic magnetic fields from Fermi observations of TeV blazars
• Origin of Galactic and Extragalactic Magnetic Fields
• The NANOGrav 12.5-year Data Set: Search For An Isotropic Stochastic Gravitational-Wave Background
• Gravitational-wave sensitivity curves
• A New Radio - X-Ray Probe of Galaxy Cluster Magnetic Fields
• The Protogalactic Origin for Cosmic Magnetic Fields
• Galactic and extragalactic magnetic fields
• EGMF Constraints from Simultaneous GeV-TeV Observations of Blazars
• Bounds on very low reheating scenarios after Planck
• The Evolution of Cosmic Magnetic Fields: From the Very Early Universe, to Recombination, to the Present
• Generation of Large-Scale Magnetic Fields in Single-Field Inflation
• NANOGrav Hints to Primordial Black Holes as Dark Matter
• Magnetic fields from inflation?
• Cosmic String Interpretation of NANOGrav Pulsar Timing Data
• Has NANOGrav found first evidence for cosmic strings?
• Did NANOGrav see a signal from primordial black hole formation?
• Primordial Magnetic Fields from Cosmological First Order Phase Transitions
• Implications of the NANOGrav results for inflation
• Generation of the Primordial Magnetic Fields during Cosmological Reionization
• Solar-Mass Primordial Black Holes Explain NANOGrav Hint of Gravitational Waves
• From NANOGrav to LIGO with metastable cosmic strings
• Cosmological Moduli and the Post-Inflationary Universe: A Critical Review
• Nonhelical inverse transfer of a decaying turbulent magnetic field
• Adding helicity to inflationary magnetogenesis
• Evolution of Primordial Magnetic Fields from Phase Transitions
• Gravitational Waves and Dark Radiation from Dark Phase Transition: Connecting NANOGrav Pulsar Timing Data and Hubble Tension
• Can slow roll inflation induce relevant helical magnetic fields?
• Inflationary Magnetogenesis without the Strong Coupling Problem
• Progress on Cosmological Magnetic Fields
• Schwinger Effect in 4D de Sitter Space and Constraints on Magnetogenesis in the Early Universe
• Classes of hydrodynamic and magnetohydrodynamic turbulent decay
• Magnetic field generation from cosmological perturbations
• Observing Invisible Axions with Gravitational Waves
• Baryogenesis from ultralight primordial black holes and strong gravitational waves from cosmic strings
• Inverse cascade of non-helical magnetic turbulence in a relativistic fluid
• Whispers from the dark side: Confronting light new physics with NANOGrav data
• NANOGrav signal from MHD turbulence at QCD phase transition in the early universe
• Magnetic Fields from QCD Phase Transitions
• On the gravitational wave sources from the NANOGrav 12.5-yr data
• Challenges in Inflationary Magnetogenesis: Constraints from Strong Coupling, Backreaction and the Schwinger Effect
• Probing non-Gaussian Stochastic Gravitational Wave Backgrounds with LISA
• Primordial Magnetic Fields from the Post-Inflationary Universe
• Backreaction of electromagnetic fields and the Schwinger effect in pseudoscalar inflation magnetogenesis
• Gravitational waves from colliding vacuum bubbles in gauge theories
• Inflation-Produced Magnetic Fields in Nonlinear Electrodynamics
• The generation of helical magnetic field in a viable scenario of Inflationary Magnetogenesis
• NANOGrav results and Dark First Order Phase Transitions
• Can we observe the QCD phase transition-generated gravitational waves through pulsar timing arrays?
• Moduli Vacuum Misalignment and Precise Predictions in String Inflation
• Primordial Magnetic Field Limits from CMB Trispectrum - Scalar Modes and Planck Constraints
• Generation of Magnetic Field in the Pre-recombination Era
• From primordial seed magnetic fields to the galactic dynamo
• The seed magnetic field generated during recombination
• Influence of backreaction of electric fields and Schwinger effect on inflationary magnetogenesis
• Pre-reheating Magnetogenesis in the Kinetic Coupling Model
• Scale-invariant Helical Magnetic Fields from Inflation
• Small scale induced gravitational waves from primordial black holes, a stringent lower mass bound, and the imprints of an early matter to radiation transition
• Cosmological Magnetogenesis From Extra-dimensional Gauss Bonnet Gravity
• Implications of the NANOGrav result on primordial gravitational waves in nonstandard cosmologies
• A scenario for inflationary magnetogenesis without strong coupling problem
• Inflationary magnetogenesis with reheating phase from higher curvature coupling
• Nano-Hz gravitational wave signature from axion dark matter
• The QCD Axion and Gravitational Waves in light of NANOGrav results
• Chiral Gravitational Waves Produced in a Helical Magnetogenesis Model
• Gravitational Collider Physics via Pulsar-Black Hole Binaries
• The evolution of primordial magnetic field since its generation
• Magnetogenesis during inflation and preheating in the Starobinsky model
• Duality and scale invariant magnetic fields from bouncing universes
• Generation of scale invariant magnetic fields in bouncing universes
• Magnetic Wall From Chiral Phase Transition and CMBR Correlations
• Helical magnetic fields from Riemann coupling
• Gravitational wave generation in a viable scenario of inflationary magnetogenesis
• Hybrid Natural Inflation
• Stealth magnetic field in de Sitter spacetime
• Primordial magnetic field and kinetic theory with Berry curvature
• Primordial Magnetogenesis in a Bouncing Universe
• Simulating relic gravitational waves from inflationary magnetogenesis
• Gravitational waves in neutrino plasma and NANOGrav signal
• Inflationary magnetogenesis: solving the strong coupling and its non-Gaussian signatures
• Hilltop inflation and generation of helical magnetic field

Cited by in corpus (8)

• Inflationary interpretation of the stochastic gravitational wave background signal detected by pulsar timing array experiments
• NANOGrav signal and LIGO-Virgo Primordial Black Holes from the Higgs field
• Constraining gravitational wave propagation using pulsar timing array correlations
• Charting the Nanohertz Gravitational Wave Sky with Pulsar Timing Arrays
• Low frequency tail of gravitational wave spectra from hydromagnetic turbulence
• Toward a test of Gaussianity of a gravitational wave background
• Implications of pulsar timing arrays for Gauss-Bonnet Inflation
• Gravitational wave signal from primordial magnetic fields in the Pulsar Timing Array frequency band