Discovery of Millisecond Pulsars in the Globular Cluster Omega Centauri

被引：28

作者：

Dai, Shi ^{[1
]}

Johnston, Simon ^{[1
]}

Kerr, Matthew ^{[2
]}

Camilo, Fernando ^{[3
]}

Cameron, Andrew ^{[1
]}

Toomey, Lawrence ^{[1
]}

Kumamoto, Hiroki ^{[1
,4
]}

机构：

[1] CSIRO Astron & Space Sci, Australia Telescope Natl Facil, Epping, NSW 1710, Australia

[2] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA

[3] South African Radio Astron Observ, ZA-7925 Observatory, South Africa

[4] Kumamoto Univ, Grad Sch Sci & Technol, Kumamoto, Japan

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2020年 / 888卷 / 02期

关键词：

Neutron stars; Radio pulsars; Millisecond pulsars; Globular star clusters; MASS BLACK-HOLE; LONG-TERM OBSERVATIONS; 47; TUCANAE; LIMITS; I;

D O I：

10.3847/2041-8213/ab621a

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The globular cluster Omega Centauri is the most massive and luminous cluster in the Galaxy. The gamma-ray source FL8Y J1326.7-4729 is coincident with the core of the cluster, leading to speculation that hitherto unknown radio pulsars or annihilating dark matter may be present in the cluster core. Here we report on the discovery of five millisecond pulsars (MSPs) in Omega Centauri following observations with the Parkes radio telescope. Four of these pulsars are isolated with spin periods of 4.1, 4.2, 4.6, and 6.8 ms. The fifth has a spin period of 4.8 ms and is in an eclipsing binary system with an orbital period of 2.1 hr. Deep radio continuum images of the cluster center with the Australian Telescope Compact Array reveal a small population of compact radio sources, making it likely that other pulsars await discovery. We consider it highly likely that the MSPs are the source of the gamma-ray emission. The long-term timing of these pulsars opens up opportunities to explore the dynamics and interstellar medium of the cluster.

引用

页数：6

共 50 条

[31] A discovery of two slow pulsars with FAST: "Ronin" from the globular cluster M15
Zhou, Dengke
Wang, Pei
Li, Di
Fang, Jianhua
Miao, Chenchen
Freire, Paulo C. C.
Zhang, Lei
Zhang, Dandan
Chen, Huaxi
Feng, Yi
Xiao, Yifan
Xie, Jintao
Zhang, Xu
Jin, Chenwu
Wang, Han
Ke, Yinan
Guo, Xuerong
Zhao, Rushuang
Niu, Chenhui
Zhu, Weiwei
Xue, Mengyao
Wang, Yabiao
Wu, Jiafu
Gan, Zhenye
Sun, Zhongyi
Wang, Chengjie
Zhang, Jie
Zhang, Junshuo
Cao, Jinhuang
Lu, Wanjin
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2024, 67 (06)
[32] BINARY AND MILLISECOND PULSARS
PHINNEY, ES
KULKARNI, SR
ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, 1994, 32 : 591 - 639
[33] The FAST Discovery of an Eclipsing Binary Millisecond Pulsar in the Globular Cluster M92 (NGC 6341)
Pan, Zhichen
Ransom, Scott M.
Lorimer, Duncan R.
Fiore, William C.
Qian, Lei
Wang, Lin
Stappers, Benjamin W.
Hobbs, George
Zhu, Weiwei
Yue, Youling
Wang, Pei
Lu, Jiguang
Liu, Kuo
Peng, Bo
Zhang, Lei
Li, Di
ASTROPHYSICAL JOURNAL LETTERS, 2020, 892 (01)
[34] DISCOVERY OF A 205.89 Hz ACCRETING MILLISECOND X-RAY PULSAR IN THE GLOBULAR CLUSTER NGC 6440
Altamirano, D.
Patruno, A.
Heinke, C. O.
Markwardt, C.
Strohmayer, T. E.
Linares, M.
Wijnands, R.
van der Klis, M.
Swank, J. H.
ASTROPHYSICAL JOURNAL LETTERS, 2010, 712 (01) : L58 - L62
[35] A MeerKAT view of the pulsars in the globular cluster NGC 6522
Abbate, F.
Ridolfi, A.
Freire, P. C. C.
Padmanabh, P. V.
Balakrishnan, V.
Buchner, S.
Zhang, L.
Kramer, M.
Stappers, B. W.
Barr, E. D.
Chen, W.
Champion, D.
Ransom, S.
Possenti, A.
ASTRONOMY & ASTROPHYSICS, 2023, 680
[36] Eight Millisecond Pulsars Discovered in the Arecibo PALFA Survey
Parent, E.
Kaspi, V. M.
Ransom, S. M.
Freire, P. C. C.
Brazier, A.
Camilo, F.
Chatterjee, S.
Cordes, J. M.
Crawford, F.
Deneva, J. S.
Ferdman, R. D.
Hessels, J. W. T.
van Leeuwen, J.
Lyne, A. G.
Madsen, E. C.
McLaughlin, M. A.
Patel, C.
Scholz, P.
Stairs, I. H.
Stappers, B. W.
Zhu, W. W.
ASTROPHYSICAL JOURNAL, 2019, 886 (02)
[37] TIMING OF FIVE MILLISECOND PULSARS DISCOVERED IN THE PALFA SURVEY
Scholz, P.
Kaspi, V. M.
Lyne, A. G.
Stappers, B. W.
Bogdanov, S.
Cordes, J. M.
Crawford, F.
Ferdman, R. D.
Freire, P. C. C.
Hessels, J. W. T.
Lorimer, D. R.
Stairs, I. H.
Allen, B.
Brazier, A.
Camilo, F.
Cardoso, R. F.
Chatterjee, S.
Deneva, J. S.
Jenet, F. A.
Karako-Argaman, C.
Knispel, B.
Lazarus, P.
Lee, K. J.
van Leeuwen, J.
Lynch, R.
Madsen, E. C.
McLaughlin, M. A.
Ransom, S. M.
Siemens, X.
Spitler, L. G.
Stovall, K.
Swiggum, J. K.
Venkataraman, A.
Zhu, W. W.
ASTROPHYSICAL JOURNAL, 2015, 800 (02)
[38] Halo millisecond pulsars ejected by intermediate-mass black holes in globular clusters
Sesana, A.
Sartore, N.
Devecchi, B.
Possenti, A.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2012, 427 (01) : 502 - 513
[39] DISCOVERY OF TWO MILLISECOND PULSARS IN FERMI SOURCES WITH THE NANCAY RADIO TELESCOPE
Cognard, I.
Guillemot, L.
Johnson, T. J.
Smith, D. A.
Venter, C.
Harding, A. K.
Wolff, M. T.
Cheung, C. C.
Donato, D.
Abdo, A. A.
Ballet, J.
Camilo, F.
Desvignes, G.
Dumora, D.
Ferrara, E. C.
Freire, P. C. C.
Grove, J. E.
Johnston, S.
Keith, M.
Kramer, M.
Lyne, A. G.
Michelson, P. F.
Parent, D.
Ransom, S. M.
Ray, P. S.
Romani, R. W.
Parkinson, P. M. Saz
Stappers, B. W.
Theureau, G.
Thompson, D. J.
Weltevrede, P.
Wood, K. S.
ASTROPHYSICAL JOURNAL, 2011, 732 (01)
[40] ESTIMATING GAMMA-RAY FLUX FROM MILLISECOND PULSARS ORIGINATING IN GLOBULAR CLUSTERS NEAR THE GALACTIC CENTER
Kuvatova, D. B.
Panamarev, T. P.
Ishchenko, M. V.
Gluchshenko, A. P.
Berczik, P. P.
RECENT CONTRIBUTIONS TO PHYSICS, 2024, 90 (03): : 14 - 20

← 1 2 3 4 5 →