Pulsar timing arrays and the challenge of massive black hole binary astrophysics

Abstract

Pulsar timing arrays (PTAs) are designed to detect gravitational waves (GWs) at nHz frequencies. The expected dominant signal is given by the superposition of all waves emitted by the cosmological population of supermassive black hole (SMBH) binaries. Such superposition creates an incoherent stochastic background, on top of which particularly bright or nearby sources might be individually resolved. In this contribution I describe the properties of the expected GW signal, highlighting its dependence on the overall binary population, the relation between SMBHs and their hosts, and their coupling with the stellar and gaseous environment. I describe the status of current PTA efforts, and prospect of future detection and SMBH binary astrophysics.

arXiv comment18 pages, 4 figures. To appear in the Proceedings of the 2014 Sant Cugat Forum on Astrophysics. Astrophysics and Space Science Proceedings, ed. C.Sopuerta (Berlin: Springer-Verlag)

References in corpus (60)

• Simulating the joint evolution of quasars, galaxies and their large-scale distribution
• Coevolution (Or Not) of Supermassive Black Holes and Host Galaxies
• Revisiting the Scaling Relations of Black Hole Masses and Host Galaxy Properties
• The international pulsar timing array project: using pulsars as a gravitational wave detector
• The stochastic gravitational-wave background from massive black hole binary systems: implications for observations with Pulsar Timing Arrays
• The North American Nanohertz Observatory for Gravitational Waves
• Gravitational Waves Probe the Coalescence Rate of Massive Black Hole Binaries
• Massive black hole binary mergers within sub-pc scale gas discs
• Low-Frequency Gravitational Waves from Massive Black Hole Binaries: Predictions for LISA and Pulsar Timing Arrays
• Limits on the Stochastic Gravitational Wave Background from the North American Nanohertz Observatory for Gravitational Waves
• The Population of Viscosity- and Gravitational Wave-Driven Supermassive Black Hole Binaries Among Luminous AGN
• Low-frequency gravitational radiation from coalescing massive black hole binaries in hierarchical cosmologies
• Feast and Famine: Regulation of Black Hole Growth in Low Redshift Galaxies
• Long Term Evolution of Massive Black Hole Binaries
• Gravitational waves from resolvable massive black hole binary systems and observations with Pulsar Timing Arrays
• The evolution of a supermassive binary caused by an accretion disc
• Ultra-Low Frequency Gravitational Radiation from Massive Black Hole Binaries
• Placing limits on the stochastic gravitational-wave background using European Pulsar Timing Array data
• Detecting the stochastic gravitational wave background using pulsar timing
• Assessing the Role of Spin Noise in the Precision Timing of Millisecond Pulsars
• The International Pulsar Timing Array
• A Large Systematic Search for Recoiling and Close Supermassive Binary Black Holes
• Efficient Merger of Binary Supermassive Black Holes in Merging Galaxies
• Interaction of massive black hole binaries with their stellar environment: I. Ejection of hypervelocity stars
• Systematic investigation of the expected gravitational wave signal from supermassive black hole binaries in the pulsar timing band
• The Parkes Pulsar Timing Array
• Limiting eccentricity of sub-parsec massive black hole binaries surrounded by self-gravitating gas discs
• Timing stability of millisecond pulsars and prospects for gravitational-wave detection
• Eccentricity of supermassive black hole binaries coalescing from gas rich mergers
• Gravitational wave astronomy of single sources with a pulsar timing array
• Fast coalescence of massive black hole binaries from mergers of galactic nuclei: implications for low-frequency gravitational-wave astrophysics
• Gravitational-wave Limits from Pulsar Timing Constrain Supermassive Black Hole Evolution
• Gas driven massive black hole binaries: signatures in the nHz gravitational wave background
• A Practical Theorem on Gravitational Wave Backgrounds
• Massive black hole binaries: dynamical evolution and observational signatures
• Measuring the parameters of massive black hole binary systems with Pulsar Timing Array observations of gravitational waves
• Self consistent model for the evolution of eccentric massive black hole binaries in stellar environments: implications for gravitational wave observations
• The Gravitational Universe
• A systematic search for massive black hole binaries in SDSS spectroscopic sample
• Multimessenger astronomy with pulsar timing and X-ray observations of massive black hole binaries
• A close-pair binary in a distant triple supermassive black-hole system
• Searching For Anisotropic Gravitational-wave Backgrounds Using Pulsar Timing Arrays
• Resolving multiple supermassive black hole binaries with pulsar timing arrays
• Optimal strategies for continuous gravitational wave detection in pulsar timing arrays
• Insights on the astrophysics of supermassive black hole binaries from pulsar timing observations
• The Effect of Orbital Eccentricity on Gravitational Wave Background Radiation from Supermassive Black Hole Binaries
• Density-potential pairs for spherical stellar systems with Sersic light-profiles and (optional) power-law cores
• Does a 'stochastic' background of gravitational waves exist in the pulsar timing band?
• Prospects for gravitational-wave detection and supermassive black hole astrophysics with pulsar timing arrays
• Triplets of supermassive black holes: Astrophysics, Gravitational Waves and Detection
• Binary super-massive black hole environments diminish the gravitational-wave signal in the pulsar timing band
• Gravitational waves and stalled satellites from massive galaxy mergers at z <= 1
• Evolution of Galactic Nuclei. I. orbital evolution of IMBH
• Electromagnetic counterparts of supermassive black hole binaries resolved by pulsar timing arrays
• Recurring flares from supermassive black hole binaries: implications for tidal disruption candidates and OJ 287
• Resolving multiple supermassive black hole binaries with pulsar timing arrays II: genetic algorithm implementation
• Multi-messenger approaches to binary supermassive black holes in the "continuous-wave" regime
• Targeting supermassive black hole binaries and gravitational wave sources for the pulsar timing array
• Electromagnetic signatures of supermassive black hole binaries resolved by PTAs
• Gravitational Wave Hotspots: Ranking Potential Locations of Single-Source Gravitational Wave Emission

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• A Population of Short-Period Variable Quasars from PTF as Supermassive Black Hole Binary Candidates
• Equilibrium eccentricity of accreting binaries
• Interactions between multiple supermassive black holes in galactic nuclei: a solution to the final parsec problem
• A Large Systematic Search for Close Supermassive Binary and Rapidly Recoiling Black Holes - III. Radial Velocity Variations
• Constraining the Solution to the Last Parsec Problem with Pulsar Timing
• Constraining Sub-Parsec Binary Supermassive Black Holes in Quasars with Multi-Epoch Spectroscopy. III. Candidates from Continued Radial Velocity Tests
• Pulsars as probes of gravity and fundamental physics
• A Large Systematic Search for Close Supermassive Binary and Rapidly Recoiling Black Holes - II. Continued Spectroscopic Monitoring and Optical Flux Variability
• Compact object mergers: Observations of supermassive binary black holes and stellar tidal disruption events
• Radio pulsars: testing gravity and detecting gravitational waves
• Co-evolution of supermassive black holes with galaxies from semi-analytic model: stochastic gravitational wave background and black hole clustering
• Realistic consecutive galaxy mergers form eccentric PTA sources
• Detection for Intermediate-mass Binary Black Holes in Population III Star Clusters with TianQin
• Non canonical polarizations of Gravitational Waves