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XS

Xavier Siemens

0000-0002-7778-2990
gr-qcastro-ph.HEastro-ph.IMastro-ph.COastro-ph.GAhep-phhep-thastro-phastro-ph.SRphysics.data-an

On Valency

published · living versions
W_g27cs8db·v1 · currentpublished
The NANOGrav 15-year Data Set: Search for Signals from New Physics
with Adeela Afzal, Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald +118
1 version
W_bf4rrujk·v1published
The NANOGrav 15-Year Data Set: Detector Characterization and Noise Budget
W_63wpvz68·v1published
The NANOGrav 15-year Data Set: Observations and Timing of 68 Millisecond Pulsars
W_3jy4d4h8·v1published
Analytic distribution of the optimal cross-correlation statistic for stochastic gravitational-wave-background searches using pulsar timing arrays
W_3tmujy6q·v1published
The NANOGrav 12.5-year Data Set: Bayesian Limits on Gravitational Waves from Individual Supermassive Black Hole Binaries
W_zzpfj2f3·v1published
The International Pulsar Timing Array second data release: Search for an isotropic Gravitational Wave Background
W_ehp5njdn·v1published
Common-spectrum process versus cross-correlation for gravitational-wave searches using pulsar timing arrays
W_br2s7but·v1published
Modeling the uncertainties of solar-system ephemerides for robust gravitational-wave searches with pulsar timing arrays
W_s5t4z3mj·v1published
The International Pulsar Timing Array: Second data release
W_jmxtgnaz·v1published
The NANOGrav Program for Gravitational Waves and Fundamental Physics

Preprints & journals

133 papers in the corpus · 1994–2026
Optimal Strategies for Gravitational-Wave Memory Detection with Noise Marginalization in Pulsar Timing Arrays2610.20772v1 · Rand Burnette, Xavier Siemens2026 · 0 citationsarXiv
Constraints on Supermassive Black Hole Binaries from the Lack of Resolvable Sources in the NANOGrav 15-yr Dataset2609.32306v1 · Emiko C. Gardiner, Kayhan Gultekin, Philippe Turgeon et al.2026 · 0 citationsarXiv
Pulsar Timing Array Sensitivity to Anisotropy: Empirical Sensitivity Curves, Scaling Relations, and the Multi-Resolution Pixel Basis2608.09781v1 · Taha T. Moursy, Nihan S. Pol, Gabriella Agazie et al.2026 · 0 citationsarXiv
New Approach to Pulsar Timing Array Data Combination.42573313 · Wright, David, Wayt, Kalista, Hazboun, Jeffrey S et al.2026 · 0 citationsPhysical review letters. 2026;137(4):041402
The NANOGrav 15 yr Data Set: Impacts of Customized Chromatic Noise Models on Gravitational Wave Analyses2606.28554v1 · Nikita Agarwal, Gabriella Agazie, Alessandra Amosso et al.2026 · 0 citationsarXiv
Searching for a waveform-agnostic gravitational wave signal in pulsar timing arrays2606.00577v1 · Heling Deng, Bence Becsy, Yuri Levin et al.2026 · 0 citationsarXiv
Gravitational Wave Measurement of the MBHM_\mathrm{BH}-MbulgeM_\mathrm{bulge} Intrinsic Scatter at High Redshift2603.11167v2 · Cayenne Matt, Kayhan Gultekin, Gabriella Agazie et al.2026 · 0 citationsAstrophys. J. 1006, 63, (2026)
The NANOGrav 15 yr Data Set: Piecewise Power-Law Reconstruction of the Gravitational-Wave Background2601.09481v1 · Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald et al.2026 · 1 citationarXiv
The NANOGrav 12.5-year Data Set: Chromatic Noise Characterization & Mitigation with Time-Domain Kernels2511.22597v1 · Jeffrey S. Hazboun, Joseph Simon, Jeremy Baier et al.2025 · 1 citationarXiv
Inferring Mbh-Mbulge Evolution from the Gravitational Wave Background2508.18126v2 · Cayenne Matt, Kayhan Gultekin, Luke Kelley et al.2025 · 5 citationsarXiv
The NANOGrav 15 yr Data Set: Targeted Searches for Supermassive Black Hole Binaries2508.16534v2 · Nikita Agarwal, Gabriella Agazie, Akash Anumarlapudi et al.2025 · 16 citationsThe Astrophysical Journal Letters, Volume 998, Issue 1, id.L11, 28 pp. (2026)
Searching beyond the fiducial stochastic gravitational wave background in pulsar timing array data using likelihood reweighting2504.21267v1 · Heling Deng, Xavier Siemens, Rand Burnette2025 · 0 citationsarXiv
Towards robust gravitational wave detections from individual supermassive black hole binaries2502.18114v1 · Bence B'ecsy, Neil J. Cornish, Polina Petrov et al.2025 · 2 citationsarXiv
The NANOGrav 15-year Data Set: Search for Gravitational Wave Memory2502.18599v2 · Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald et al.2025 · 0 citationsarXiv
The NANOGrav 15 Yr Data Set: Removing Pulsars One by One from the Pulsar Timing Array2411.14846v2 · Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald et al.2024 · 3 citationsarXiv
The NANOGrav 15 yr Data Set: Harmonic Analysis of the Pulsar Angular Correlations2411.13472v1 · Gabriella Agazie, Jeremy G. Baier, Paul T. Baker et al.2024 · 3 citationsarXiv
Inference on inner galaxy structure via gravitational waves from supermassive binaries2411.05906v3 · Yifan Chen, Matthias Daniel, Daniel J. D'Orazio et al.2024 · 6 citationsarXiv
Optimal Strategies for Gravitational Wave Memory Detection in Pulsar Timing Arrays2410.19977v1 · Jerry P. Sun, Xavier Siemens, Dustin R. Madison2024 · 0 citationsarXiv
Solving the PTA Data Analysis Problem with a Global Gibbs Scheme2410.11944v2 · Nima Laal, Stephen R. Taylor, Rutger van Haasteren et al.2024 · 9 citationsarXiv
The NANOGrav 15 yr Data Set: Running of the Spectral Index2408.10166v2 · Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald et al.2024 · 11 citationsAstrophys. J. Lett. 978 (2025) 2, L29
The NANOGrav 15 yr data set: Posterior predictive checks for gravitational-wave detection with pulsar timing arrays2407.20510v2 · Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald et al.2024 · 4 citationsarXiv
The NANOGrav 15 yr Data Set: Looking for Signs of Discreteness in the Gravitational-wave Background2404.07020v2 · Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald et al.2024 · 21 citationsThe Astrophysical Journal, Volume 978, Number 1 (2024)
The Green Bank North Celestial Cap Survey IX: Timing Follow-up for 128 Pulsars2312.07471v2 · A. E. McEwen, J. K. Swiggum, D. L. Kaplan et al.2023 · 10 citationsjournal = {\apj}, year = 2024, month = feb, volume = {962}, number = {2}, pages = {167},
The NANOGrav 15-year data set: Search for Transverse Polarization Modes in the Gravitational-Wave Background2310.12138v1 · Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald et al.2023 · 24 citationsarXiv
The NANOGrav 12.5-year data set: A computationally efficient eccentric binary search pipeline and constraints on an eccentric supermassive binary candidate in 3C 66B2309.17438v2 · Gabriella Agazie, Zaven Arzoumanian, Paul T. Baker et al.2023 · 18 citationsAstrophysical Journal, 2024
How to Detect an Astrophysical Nanohertz Gravitational-Wave Background2309.04443v2 · Bence B'ecsy, Neil J. Cornish, Patrick M. Meyers et al.2023 · 17 citationsApJ 959 9 (2023)
The NANOGrav 12.5-year Data Set: Search for Gravitational Wave Memory2307.13797v1 · Gabriella Agazie, Zaven Arzoumanian, Paul T. Baker et al.2023 · 29 citationsarXiv
Searching for gravitational wave burst in PTA data with piecewise linear functions2306.17130v2 · Heling Deng, Bence B'ecsy, Xavier Siemens et al.2023 · 0 citationsarXiv
The NANOGrav 15-year Data Set: Evidence for a Gravitational-Wave Background2306.16213v1 · Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald et al.2023 · 1,471 citationsarXivon Valency
The NANOGrav 15-year Data Set: Observations and Timing of 68 Millisecond Pulsars2306.16217v1 · Gabriella Agazie, Md Faisal Alam, Akash Anumarlapudi et al.2023 · 364 citationsarXivon Valency
The NANOGrav 15-Year Data Set: Detector Characterization and Noise Budget2306.16218v1 · Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald et al.2023 · 146 citationsarXivon Valency
The NANOGrav 15-year Data Set: Search for Signals from New Physics2306.16219v1 · Adeela Afzal, Gabriella Agazie, Akash Anumarlapudi et al.2023 · 751 citationsarXivon Valency
The NANOGrav 15-year Data Set: Constraints on Supermassive Black Hole Binaries from the Gravitational Wave Background2306.16220v2 · Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald et al.2023 · 384 citationsarXiv
The NANOGrav 15-year Data Set: Search for Anisotropy in the Gravitational-Wave Background2306.16221v1 · Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald et al.2023 · 4 citationsarXiv
The NANOGrav 15-year Data Set: Bayesian Limits on Gravitational Waves from Individual Supermassive Black Hole Binaries2306.16222v1 · Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald et al.2023 · 156 citationsarXiv
The NANOGrav 15-year Gravitational-Wave Background Methods2306.16223v3 · Aaron D. Johnson, Patrick M. Meyers, Paul T. Baker et al.2023 · 44 citationsPhys. Rev. D 109, 103012 (2024)
The Green Bank North Celestial Cap Survey. VIII. 21 New Pulsar Timing Solutions2305.13624v1 · William Fiore, Lina Levin, Maura A. McLaughlin et al.2023 · 12 citationsarXiv
Exploring the Capabilities of Gibbs Sampling in Pulsar Timing Arrays2305.12285v2 · Nima Laal, William G Lamb, Joseph D. Romano et al.2023 · 13 citationsPhys. Rev. D 108, 063008 (2023)
Analytic distribution of the optimal cross-correlation statistic for stochastic gravitational-wave-background searches using pulsar timing arrays2305.01116v1 · Jeffrey S. Hazboun, Patrick M. Meyers, Joseph D. Romano et al.2023 · 14 citationsarXivon Valency
Searching for continuous Gravitational Waves in the second data release of the International Pulsar Timing Array2303.10767v1 · M. Falxa, S. Babak, P. T. Baker et al.2023 · 72 citationsarXiv
The NANOGrav 12.5-year Data Set: Bayesian Limits on Gravitational Waves from Individual Supermassive Black Hole Binaries2301.03608v2 · Zaven Arzoumanian, Paul T. Baker, Laura Blecha et al.2023 · 48 citationsarXivon Valency
The Green Bank North Celestial Cap Survey. VII. 12 New Pulsar Timing Solutions2212.03926v1 · Joseph K. Swiggum, Ziggy Pleunis, Emilie Parent et al.2022 · 24 citationsarXiv
An unusual pulse shape change event in PSR J1713+0747 observed with the Green Bank Telescope and CHIME2210.12266v3 · Ross J. Jennings, James M. Cordes, Shami Chatterjee et al.2022 · 20 citationsarXiv
Implementation of an efficient Bayesian search for gravitational wave bursts with memory in pulsar timing array data2209.09343v1 · Jerry Sun, Paul T. Baker, Aaron D. Johnson et al.2022 · 11 citationsarXiv
Snowmass2021 Cosmic Frontier White Paper: Fundamental Physics and Beyond the Standard Model2203.06240v2 · Emanuele Berti, Vitor Cardoso, Zolt'an Haiman et al.2022 · 6 citationsarXiv
Gravitational Wave Statistics for Pulsar Timing Arrays: Examining Bias from Using a Finite Number of Pulsars2201.10657v2 · Aaron D. Johnson, Sarah J. Vigeland, Xavier Siemens et al.2022 · 10 citationsarXiv
The International Pulsar Timing Array second data release: Search for an isotropic Gravitational Wave Background2201.03980v1 · J. Antoniadis, Z. Arzoumanian, S. Babak et al.2022 · 323 citationsarXivon Valency
Detection of early-universe gravitational-wave signatures and fundamental physics.36465478 · Caldwell, Robert, Cui, Yanou, Guo, Huai-Ke et al.2026 · 94 citationsGeneral relativity and gravitation. 2022;54(12):156
The NANOGrav 12.5-year data set: Search for Non-Einsteinian Polarization Modes in theGravitational-Wave Background2109.14706v1 · Zaven Arzoumanian, Paul T. Baker, Harsha Blumer et al.2021 · 58 citationsThe Astrophysical Journal Letters, vol. 923, no. 2, p. L22, Dec. 2021
The Green Bank Northern Celestial Cap Pulsar Survey. VI. Timing and Discovery of PSR J1759+5036: A Double Neutron Star Binary Pulsar2102.10214v2 · Gabriella Agazie, Michael Mingyar, Maura McLaughlin et al.2021 · 25 citationsarXiv
Career total: at least 235 works. 133 are in this corpus.Showing the 50 most recent.

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