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Parkes Pulsar Timing Array constraints on ultralight scalar-field dark matter
Porayko, Nataliya K.1; Zhu, Xingjiang2,3,4; Levin, Yuri2,5,6; Hui, Lam5; Hobbs, George7; Grudskaya, Aleksandra8; Postnov, Konstantin8,9; Bailes, Matthew4,10; Bhat, N. D. Ramesh11; Coles, William12; Dai, Shi7; Dempsey, James13; Keith, Michael J.14; Kerr, Matthew15; Kramer, Michael1,14; Lasky, Paul D.2,4; Manchester, Richard N.7; Oslowski, Stefan10; Parthasarathy, Aditya10; Ravi, Vikram16; Reardon, Daniel J.4,10; Rosado, Pablo A.10; Russell, Christopher J.17; Shannon, Ryan M.4,10; Spiewak, Renee10; van Straten, Willem18; Toomey, Lawrence7; Wang, Jingbo19; Wen, Linying3,4; You, Xiaopeng20
Source PublicationPHYSICAL REVIEW D
Contribution Rank19
AbstractIt is widely accepted that dark matter contributes about a quarter of the critical mass-energy density in our Universe. The nature of dark matter is currently unknown, with the mass of possible constituents spanning nearly one hundred orders of magnitude. The ultralight scalar field dark matter, consisting of extremely light bosons with m similar to 10(-22) eV and often called "fuzzy" dark matter, provides intriguing solutions to some challenges at sub-Galactic scales for the standard cold dark matter model. As shown by Khmelnitsky and Rubakov, such a scalar field in the Galaxy would produce an oscillating gravitational potential with nanohertz frequencies, resulting in periodic variations in the times of arrival of radio pulses from pulsars. The Parkes Pulsar Timing Array (PPTA) has been monitoring 20 millisecond pulsars at two-to three-week intervals for more than a decade. In addition to the detection of nanohertz gravitational waves, PPTA offers the opportunity for direct searches for fuzzy dark matter in an astrophysically feasible range of masses. We analyze the latest PPTA data set which includes timing observations for 26 pulsars made between 2004 and 2016. We perform a search in this data set for evidence of ultralight dark matter in the Galaxy using Bayesian and Frequentist methods. No statistically significant detection has been made. We, therefore, place upper limits on the local dark matter density. Our limits, improving on previous searches by a factor of 2 to 5, constrain the dark matter density of ultralight bosons with m <= 10(-23) eV to be below 6 GeV cm(-3) with 95% confidence in the Earth neighborhood. Finally, we discuss the prospect of probing the astrophysically favored mass range m greater than or similar to 10(-22) eV with next-generation pulsar timing facilities.
Indexed BySCI
Funding ProjectCommonwealth of Australia ; IMPRS Bonn/Cologne ; ARC[DP150102988] ; ARC[CE170100004] ; ARC[FT160100112] ; ARC[DP180103155] ; DOE[DE-SC0011941] ; ARC Laureate Fellowship[FL150100148] ; Qing Cu Hui of Chinese Academy of Sciences (CAS) ; Bonn-Cologne Graduate School (BCGS) ; NASA ; NASA[NXX16AB27G]
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000449296000001
Citation statistics
Cited Times:39[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorPorayko, Nataliya K.; Zhu, Xingjiang
Affiliation1.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany
2.Monash Univ, Sch Phys & Astron, Clayton, Vic 3800, Australia
3.Univ Western Australia, Sch Phys, Crawley, WA 6009, Australia
4.OzGrav Australian Res Council, Ctr Excellence Gravitat Wave Discovery, Hawthorn, VIC 3122, Australia
5.Columbia Univ, Dept Phys, Ctr Theoret Phys, 538 W 120th St, New York, NY 10027 USA
6.Flatiron Inst, Ctr Computat Astrophys, New York, NY 10010 USA
7.CSIRO Astron & Space Sci, POB 76, Epping, NSW 1710, Australia
8.Lotnonosov Moscow State Univ, Sternberg Astron Inst, Univ Skii Pr 13, Moscow 119234, Russia
9.Kazan Fed Univ, Kremlevskaya 18, Kazan 420008, Russia
10.Swinburne Univ Technol, Ctr Astrophys & Supercomp, POB 218, Hawthorn, Vic 3122, Australia
11.Curtin Univ, Int Ctr Radio Astron Res, Bentley, WA 6102, Australia
12.Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA
13.CSIRO Informat Management & Technol, POB 225, Dickson, ACT 2602, Australia
14.Univ Manchester, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England
15.Naval Res Lab, Space Sci Div, Washington, DC 20375 USA
16.CALTECH, Cahill Ctr Astron & Astrophys, MC 249-17, Pasadena, CA 91125 USA
17.CSIRO Sci Comp, Australian Technol Pk,Locked Bag 9013, Alexandria, NSW 1435, Australia
18.Auckland Univ Technol, Inst Radio Astron & Space Res, Private Bag 92006, Auckland 1142, New Zealand
19.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Xinjiang 830011, Peoples R China
20.Southwest Univ, Sch Phys Sci & Technol, Chongqing 400715, Peoples R China
Recommended Citation
GB/T 7714
Porayko, Nataliya K.,Zhu, Xingjiang,Levin, Yuri,et al. Parkes Pulsar Timing Array constraints on ultralight scalar-field dark matter[J]. PHYSICAL REVIEW D,2018,98(10):102002.
APA Porayko, Nataliya K..,Zhu, Xingjiang.,Levin, Yuri.,Hui, Lam.,Hobbs, George.,...&You, Xiaopeng.(2018).Parkes Pulsar Timing Array constraints on ultralight scalar-field dark matter.PHYSICAL REVIEW D,98(10),102002.
MLA Porayko, Nataliya K.,et al."Parkes Pulsar Timing Array constraints on ultralight scalar-field dark matter".PHYSICAL REVIEW D 98.10(2018):102002.
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