An 86 GHz Search for Pulsars in the Galactic Center with the Atacama Large Millimeter / submillimeter Array
文献类型：期刊论文
| 作者 | Liu,Kuo9; Desvignes,Gregory9,10; Eatough,Ralph P.9,11; Karuppusamy,Ramesh9; Kramer,Michael9; Torne,Pablo9,12; Wharton,Robert9; Chatterjee,Shami13; Cordes,James M.13; Crew,Geoffrey B.14 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2021-06-01 |
| 卷号 | 914期号:1 |
| ISSN号 | 0004-637X |
| 关键词 | Pulsars Radio pulsars Galactic center |
| DOI | 10.3847/1538-4357/abf9a2 |
| 英文摘要 | Abstract We report on the first pulsar and transient survey of the Galactic Center (GC) with the Atacama Large Millimeter/submillimeter Array (ALMA). The observations were conducted during the Global Millimeter VLBI Array campaign in 2017 and 2018. We carry out searches using time series of both total intensity and other polarization components in the form of Stokes parameters. We incorporate acceleration and its derivative in the pulsar search, and also search in segments of the entire observation to compensate for potential orbital motion of the pulsar. While no new pulsar is found, our observations yield the polarization profile of the GC magnetar PSR J1745?2900 at millimeter wavelength for the first time, which turns out to be nearly 100% linearly polarized. Additionally, we estimate the survey sensitivity placed by both system and red noise, and evaluate its capability of finding pulsars in orbital motion with either Sgr A* or a binary companion. We show that the survey is sensitive to only the most luminous pulsars in the known population and future observations with ALMA in Band-1 will deliver significantly deeper survey sensitivity on the GC pulsar population. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-637X-914-1-ABF9A2 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/57240]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Liu,Kuo |
| 作者单位 | 1.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210008, People’s Republic of China 2.Frankfurt Institute for Advanced Studies, Ruth-Moufang-Strasse 1, D-60438 Frankfurt, Germany 3.Institut für Theoretische Physik, Max-von-Laue-Strasse 1, D-60438 Frankfurt, Germany 4.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, People’s Republic of China 5.Black Hole Initiative at Harvard University, 20 Garden Street, Cambridge, MA 02138, USA 6.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China 7.School of Mathematics, Trinity College, Dublin 2, Ireland 8.Center for Astrophysics ∣ Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA 9.Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany; kliu@mpifr-bonn.mpg.de 10.LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université de Paris, 5 place Jules Janssen, F-92195 Meudon, France |
| 推荐引用方式 GB/T 7714 | Liu,Kuo,Desvignes,Gregory,Eatough,Ralph P.,et al. An 86 GHz Search for Pulsars in the Galactic Center with the Atacama Large Millimeter / submillimeter Array[J]. The Astrophysical Journal,2021,914(1). |
| APA | Liu,Kuo.,Desvignes,Gregory.,Eatough,Ralph P..,Karuppusamy,Ramesh.,Kramer,Michael.,...&Wex,Norbert.(2021).An 86 GHz Search for Pulsars in the Galactic Center with the Atacama Large Millimeter / submillimeter Array.The Astrophysical Journal,914(1). |
| MLA | Liu,Kuo,et al."An 86 GHz Search for Pulsars in the Galactic Center with the Atacama Large Millimeter / submillimeter Array".The Astrophysical Journal 914.1(2021). |
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