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A gamma-ray pulsar timing array constrains the nanohertz gravitational wave background

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autorschaft

  • The Fermi LAT Collaboration
  • C. J. Clark
  • L. Nieder

Organisationseinheiten

Externe Organisationen

  • University of Manchester
  • Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut)

Details

OriginalspracheEnglisch
Seiten (von - bis)521-523
Seitenumfang3
FachzeitschriftSCIENCE
Jahrgang376
Ausgabenummer6592
PublikationsstatusVeröffentlicht - 29 Apr. 2022

Abstract

After large galaxies merge, their central supermassive black holes are expected to form binary systems. Their orbital motion should generate a gravitational wave background (GWB) at nanohertz frequencies. Searches for this background use pulsar timing arrays, which perform long-term monitoring of millisecond pulsars at radio wavelengths. We used 12.5 years of Fermi Large Area Telescope data to form a gamma-ray pulsar timing array. Results from 35 bright gamma-ray pulsars place a 95.0 x 10(-14) at a frequency of 1 year(-1). The sensitivity is expected to scale with t(obs), the observing time span, as t(obs)(-13/6). This direct measurement provides an independent probe of the GWB while offering a check on radio noise models.

ASJC Scopus Sachgebiete

Zitieren

A gamma-ray pulsar timing array constrains the nanohertz gravitational wave background. / The Fermi LAT Collaboration; Clark, C. J.; Nieder, L.
in: SCIENCE, Jahrgang 376, Nr. 6592, 29.04.2022, S. 521-523.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

The Fermi LAT Collaboration, Clark, CJ & Nieder, L 2022, 'A gamma-ray pulsar timing array constrains the nanohertz gravitational wave background', SCIENCE, Jg. 376, Nr. 6592, S. 521-523. https://doi.org/10.1126/science.abm3231
The Fermi LAT Collaboration, Clark, C. J., & Nieder, L. (2022). A gamma-ray pulsar timing array constrains the nanohertz gravitational wave background. SCIENCE, 376(6592), 521-523. https://doi.org/10.1126/science.abm3231
The Fermi LAT Collaboration, Clark CJ, Nieder L. A gamma-ray pulsar timing array constrains the nanohertz gravitational wave background. SCIENCE. 2022 Apr 29;376(6592):521-523. doi: 10.1126/science.abm3231
The Fermi LAT Collaboration ; Clark, C. J. ; Nieder, L. / A gamma-ray pulsar timing array constrains the nanohertz gravitational wave background. in: SCIENCE. 2022 ; Jahrgang 376, Nr. 6592. S. 521-523.
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title = "A gamma-ray pulsar timing array constrains the nanohertz gravitational wave background",
abstract = "After large galaxies merge, their central supermassive black holes are expected to form binary systems. Their orbital motion should generate a gravitational wave background (GWB) at nanohertz frequencies. Searches for this background use pulsar timing arrays, which perform long-term monitoring of millisecond pulsars at radio wavelengths. We used 12.5 years of Fermi Large Area Telescope data to form a gamma-ray pulsar timing array. Results from 35 bright gamma-ray pulsars place a 95.0 x 10(-14) at a frequency of 1 year(-1). The sensitivity is expected to scale with t(obs), the observing time span, as t(obs)(-13/6). This direct measurement provides an independent probe of the GWB while offering a check on radio noise models.",
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note = "Funding Information: This work was performed in part under DOE contract DE-AC02-76SF00515. M.K. is supported by NASA grant NNG21OB03A. E.C.F. and N.M. are supported by NASA under award 80GSFC21M0002. T.C. is supported by NASA through the NASA Hubble Fellowship Program grant HST-HF2-51453.001. K.C. is supported by a UBC Four Year Fellowship (6456). S.M.R. is a CIFAR Fellow and is supported by the NSF Physics Frontiers Center award 1430284. The work of M.A.S.C. and V.G. was supported by grants PGC2018-095161-B-I00 and CEX2020-001007-S, both funded by MCIN/AEI/10.13039/501100011033 and by ERDF. V.G. has been supported by Juan de la Cierva-Incorporaci?n IJC2019-040315-I grants. G.Z. acknowledges financial support from the Slovenian Research Agency (grants P1-0031, I0-0033, and J1-1700). C.J.C. acknowledges support from the ERC under the European Union's Horizon 2020 research and innovation programme (grant agreement 715051; Spiders). S.J.S. holds an NRC Research Associateship award at NRL. ",
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Download

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T1 - A gamma-ray pulsar timing array constrains the nanohertz gravitational wave background

AU - The Fermi LAT Collaboration

AU - Kerr, Matthew

AU - Parthasarathy, Aditya

AU - Clark, C. J.

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N1 - Funding Information: This work was performed in part under DOE contract DE-AC02-76SF00515. M.K. is supported by NASA grant NNG21OB03A. E.C.F. and N.M. are supported by NASA under award 80GSFC21M0002. T.C. is supported by NASA through the NASA Hubble Fellowship Program grant HST-HF2-51453.001. K.C. is supported by a UBC Four Year Fellowship (6456). S.M.R. is a CIFAR Fellow and is supported by the NSF Physics Frontiers Center award 1430284. The work of M.A.S.C. and V.G. was supported by grants PGC2018-095161-B-I00 and CEX2020-001007-S, both funded by MCIN/AEI/10.13039/501100011033 and by ERDF. V.G. has been supported by Juan de la Cierva-Incorporaci?n IJC2019-040315-I grants. G.Z. acknowledges financial support from the Slovenian Research Agency (grants P1-0031, I0-0033, and J1-1700). C.J.C. acknowledges support from the ERC under the European Union's Horizon 2020 research and innovation programme (grant agreement 715051; Spiders). S.J.S. holds an NRC Research Associateship award at NRL.

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