A gamma-ray pulsar timing array constrains the nanohertz gravitational wave background | |
Ajello, M.51; Atwood, W. B.52; Baldini, L.53; Ballet, J.54; Barbiellini, G.55,56; Bastieri, D.57,58; Bellazzini, R.59; Berretta, A.60; Bhattacharyya, B.61; Bissaldi, E.62,63 | |
刊名 | SCIENCE |
2022-04-29 | |
卷号 | 376期号:6592页码:521-+ |
ISSN号 | 0036-8075 |
DOI | 10.1126/science.abm3231 |
产权排序 | 第51完成单位 |
文献子类 | Article |
英文摘要 | 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% credible limit on the GWB characteristic strain of 1.0 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. |
学科主题 | 天文学 ; 天体物理学 ; 高能天体物理学 |
URL标识 | 查看原文 |
出版地 | 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA |
资助项目 | DOE[DE-AC02-76SF00515] ; NASA[NNG21OB03A] ; NASA[80GSFC21M0002] ; NASA[HST-HF2-51453.001] ; UBC Four Year Fellowship[6456] ; NSF Physics Frontiers Center[1430284] ; MCIN/AEI[PGC2018-095161-B-I00] ; MCIN/AEI[CEX2020-001007-S] ; ERDF ; Juan de la Cierva-Incorporacion[IJC2019-040315-I] ; Slovenian Research Agency[P1-0031] ; Slovenian Research Agency[I0-0033] ; Slovenian Research Agency[J1-1700] ; ERC under the European Union's Horizon 2020 research and innovation programme[715051] ; NRC Research Associateship award at NRL |
WOS关键词 | PRECISION ; LIMITS ; NOISE ; VARIABILITY ; DISPERSION ; RADIATION ; EMISSION ; SEARCH ; TESTS |
WOS研究方向 | Science & Technology - Other Topics |
语种 | 英语 |
出版者 | AMER ASSOC ADVANCEMENT SCIENCE |
WOS记录号 | WOS:000791247600076 |
资助机构 | DOE[DE-AC02-76SF00515] ; NASA[NNG21OB03A, 80GSFC21M0002, HST-HF2-51453.001] ; UBC Four Year Fellowship[6456] ; NSF Physics Frontiers Center[1430284] ; MCIN/AEI[PGC2018-095161-B-I00, CEX2020-001007-S] ; ERDF ; Juan de la Cierva-Incorporacion[IJC2019-040315-I] ; Slovenian Research Agency[P1-0031, I0-0033, J1-1700] ; ERC under the European Union's Horizon 2020 research and innovation programme[715051] ; NRC Research Associateship award at NRL |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/25154] |
专题 | 云南天文台_高能天体物理研究组 |
通讯作者 | Kramer, M.; Pei, Z. |
作者单位 | 1.CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei 230026, P. R. China; 2.Friedrich-Alexander Universit¨at Erlangen-N¨urnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany; 3.The George Washington University, Department of Physics, 725 21st St, NW, Washington, DC 20052, USA; 4.Georg-August University G¨ottingen, Institute for theoretical Physics - Faculty of Physics, Friedrich-Hund-Platz 1, D-37077 G¨ottingen, Germany; 5.Los Alamos National Laboratory, Los Alamos, NM 87545, USA; 6.University of North Florida, Department of Physics, 1 UNF Drive, Jacksonville, FL 32224, USA; 7.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, P. R. China; 8.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, P. R. China; 9.Science Institute, University of Iceland, IS-107 Reykjavik, Iceland; 10.Nordita, Royal Institute of Technology and Stockholm University, Roslagstullsbacken 23, SE-106 91 Stockholm, Sweden; |
推荐引用方式 GB/T 7714 | Ajello, M.,Atwood, W. B.,Baldini, L.,et al. A gamma-ray pulsar timing array constrains the nanohertz gravitational wave background[J]. SCIENCE,2022,376(6592):521-+. |
APA | Ajello, M..,Atwood, W. B..,Baldini, L..,Ballet, J..,Barbiellini, G..,...&Zaharijas, G..(2022).A gamma-ray pulsar timing array constrains the nanohertz gravitational wave background.SCIENCE,376(6592),521-+. |
MLA | Ajello, M.,et al."A gamma-ray pulsar timing array constrains the nanohertz gravitational wave background".SCIENCE 376.6592(2022):521-+. |
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