A gamma-ray pulsar timing array constrains the nanohertz gravitational wave background
文献类型:期刊论文
作者 | Ajello, M.93; Atwood, W. B.92; Baldini, L.91; Ballet, J.90; Barbiellini, G.88,89; Bastieri, D.86,87; Bellazzini, R.85; Berretta, A.84; Bhattacharyya, B.83; Bissaldi, E.81,82 |
刊名 | SCIENCE |
出版日期 | 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 |
WOS关键词 | PRECISION ; LIMITS ; NOISE ; VARIABILITY ; DISPERSION ; RADIATION ; EMISSION ; SEARCH ; TESTS |
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 |
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 云南天文台_中国科学院天体结构与演化重点实验室 |
通讯作者 | Kramer, M.; Pei, Z. |
作者单位 | 1.Center for Astrophysics and Cosmology, University of Nova Gorica, Nova Gorica, Slovenia 2.Praxis Inc., Alexandria, VA 22303, USA; 3.Institut d’Estudis Espacials de Catalunya (IEEC), 08034 Barcelona, Spain; 4.Institute of Space Sciences (ICE, CSIC), Campus UAB, Carrer de Magrans s/n, E-08193 Barcelona, Spain; 5.Instituci´o Catalana de Recerca i Estudis Avanc¸ats (ICREA), E-08010 Barcelona, Spain; 6.Department of Physics and Astronomy,West Virginia University, Morgantown,WV26506- 6315, USA; 7.New York University Abu Dhabi, P.O. Box 129188, Abu Dhabi, United Arab Emirates; 8.Resident at Naval Research Laboratory, Washington, DC 20375, USA; 9.Purdue University Northwest, Hammond, IN 46323, USA; 10.Centre for Astrophysics and Supercomputing, Swinburne University of Technology, PO Box 218, Hawthorn Victoria 3122, Australia; |
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-+. |
入库方式: OAI收割
来源:云南天文台
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