Bayesian jackknife tests with a small number of subsets: application to HERA 21 cm power spectrum upper limits

Author:

Wilensky Michael J12ORCID,Kennedy Fraser2,Bull Philip123,Dillon Joshua S4ORCID,Abdurashidova Zara4,Adams Tyrone5,Aguirre James E6ORCID,Alexander Paul7,Ali Zaki S4,Baartman Rushelle5,Balfour Yanga5,Beardsley Adam P89,Bernardi Gianni51011,Billings Tashalee S6,Bowman Judd D8,Bradley Richard F12,Burba Jacob13ORCID,Carey Steven7,Carilli Chris L14,Cheng Carina4,DeBoer David R15,de Lera Acedo Eloy7ORCID,Dexter Matt15,Eksteen Nico5,Ely John7,Ewall-Wice Aaron416ORCID,Fagnoni Nicolas7ORCID,Fritz Randall5,Furlanetto Steven R17ORCID,Gale-Sides Kingsley7,Glendenning Brian18,Gorthi Deepthi4,Greig Bradley19ORCID,Grobbelaar Jasper5,Halday Ziyaad5,Hazelton Bryna J2021,Hewitt Jacqueline N2223,Hickish Jack15,Jacobs Daniel C8,Julius Austin5,Kariseb MacCalvin5,Kern Nicholas S423,Kerrigan Joshua13,Kittiwisit Piyanat3ORCID,Kohn Saul A6ORCID,Kolopanis Matthew8,Lanman Adam13ORCID,La Plante Paul46,Liu Adrian24,Loots Anita5,MacMahon David Harold Edward15,Malan Lourence5,Malgas Cresshim5,Malgas Keith5,Marero Bradley5,Martinot Zachary E6,Mesinger Andrei25ORCID,Molewa Mathakane5,Morales Miguel F20,Mosiane Tshegofalang5,Murray Steven G8ORCID,Neben Abraham R23,Nikolic Bojan7,Nuwegeld Hans5,Parsons Aaron R4,Patra Nipanjana4,Pieterse Samantha5,Razavi-Ghods Nima7,Robnett James14,Rosie Kathryn5,Sims Peter24ORCID,Swarts Hilton5,Thyagarajan Nithyanandan1426ORCID,van Wyngaarden Pieter5,Williams Peter K G2728ORCID,Zheng Haoxuan23ORCID

Affiliation:

1. Jodrell Bank Centre for Astrophysics, University of Manchester , Manchester M13 9PL, UK

2. Astronomy Unit, Queen Mary University of London , London E1 4NS, UK

3. Department of Physics and Astronomy, University of Western Cape , Cape Town 7535, South Africa

4. Department of Astronomy, University of California , Berkeley, CA 94720-3411, USA

5. South African Radio Astronomy Observatory, Black River Park , 2 Fir Street, Observatory, Cape Town 7925, South Africa

6. Department of Physics and Astronomy, University of Pennsylvania , Philadelphia, PA 19104-6396, USA

7. Cavendish Astrophysics, University of Cambridge , Cambridge Cavendish Astrophysics: CB3 OHE, UK

8. School of Earth and Space Exploration , Arizona State University, Tempe, AZ 85287-1404, USA

9. Department of Physics, Winona State University , Winona, MN 55987, USA

10. INAF-Istituto di Radioastronomia , via Gobetti 101, I-40129 Bologna, Italy

11. Department of Physics and Electronics, Rhodes University , PO Box 94, Grahamstown 6140, South Africa

12. National Radio Astronomy Observatory , Charlottesville, VA 22903, USA

13. Department of Physics, Brown University , Providence, RI 02096, USA

14. National Radio Astronomy Observatory , Socorro, NM 87801, USA

15. Radio Astronomy Lab, University of California , Berkeley, CA 94720-3411, USA

16. Department of Physics, University of California , Berkeley, CA 94720-3411, USA

17. Department of Physics and Astronomy, University of California , Los Angeles, CA 90095-1547, USA

18. National Radio Astronomy Observatory , Socorro, NM 87801-0387, USA

19. School of Physics, University of Melbourne , Parkville, VIC 3010, Australia

20. Department of Physics, University of Washington , Seattle, WA 98195-1560, USA

21. eScience Institute, University of Washington , Seattle, WA 98195-1560, USA

22. MIT Kavli Institute, Massachusetts Institute of Technology , Cambridge, MA 02139, USA

23. Department of Physics, Massachusetts Institute of Technology , Cambridge, MA 02142, USA

24. Department of Physics and McGill Space Institute, McGill University , 3600 University Street, Montreal, QC H3A 2T8, Canada

25. Scuola Normale Superiore , I-56126 Pisa, Italy

26. Commonwealth Scientific and Industrial Research Organisation (CSIRO) , Space & Astronomy, P. O. Box 1130, Bentley, WA 6102, Australia

27. Center for Astrophysics, Harvard & Smithsonian , Cambridge, MA 02138, USA

28. American Astronomical Society , Washington, DC20006, USA

Abstract

ABSTRACT We present a Bayesian jackknife test for assessing the probability that a data set contains biased subsets, and, if so, which of the subsets are likely to be biased. The test can be used to assess the presence and likely source of statistical tension between different measurements of the same quantities in an automated manner. Under certain broadly applicable assumptions, the test is analytically tractable. We also provide an open-source code, chiborg, that performs both analytic and numerical computations of the test on general Gaussian-distributed data. After exploring the information theoretical aspects of the test and its performance with an array of simulations, we apply it to data from the Hydrogen Epoch of Reionization Array (HERA) to assess whether different sub-seasons of observing can justifiably be combined to produce a deeper 21 cm power spectrum upper limit. We find that, with a handful of exceptions, the HERA data in question are statistically consistent and this decision is justified. We conclude by pointing out the wide applicability of this test, including to CMB experiments and the H0 tension.

Funder

National Science Foundation

Gordon and Betty Moore Foundation

Massachusetts Institute of Technology

National Research Foundation

European Research Council

Science and Technology Facilities Council

Scuola Normale Superiore

Australian Research Council

INAF

Ministero degli Affari Esteri e della Cooperazione Internazionale

Royal Society

Canadian Institute for Advanced Research

Natural Sciences and Engineering Research Council of Canada

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

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