Journal of The Korean Astronomical Society (천문학회지)

The Korean Astronomical Society (한국천문학회)
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NEUTRON STARS IN THE GALACTIC CENTER

  • Kim, Chunglee (Department of Physics, Ewha Womans University) ;
  • Davies, Melvyn B. (Lund Observatory, Department of Astronomy and Theoretical Physics)
  • Received : 2018.10.12
  • Accepted : 2018.10.23
  • Published : 2018.10.31
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Abstract

The Galactic Center is one of the most dense stellar environments in the Galaxy and is considered to be a plausible place to harbor many neutron stars. In this brief review, we summarize observational efforts in search of neutron stars within a few degrees about the Galactic Center. Up to 10% of Galactic neutron stars may reside in this central region and it is possible that more than a thousand neutron stars are located within only ~ 2500 (${\leq}1pc$) about the Galactic Center. Based on observations, we discuss prospects of detecting neutron stars in the Galactic Center via gravitational waves as well as electromagnetic waves.

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References

  1. Aasi, J., Abadie, J., Abbott, B. P., et al. 2013, Directed Search for Continuous GravitationalWaves from the Galactic Center, PRD, 88, 102002 https://doi.org/10.1103/PhysRevD.88.102002
  2. Aasi, J., Abadie, J., Abbott, B. P., et al. 2014, Gravitational Waves from Known Pulsars: Results from the Initial Detector Era, ApJ, 785, 18, 119 https://doi.org/10.1088/0004-637X/785/2/119
  3. Abadie, J., Abbott, B. P., Abbott, R., et al. 2010, First Search for Gravitational Waves from the Youngest Known Neutron Star, ApJ, 722, 1504 https://doi.org/10.1088/0004-637X/722/2/1504
  4. Abbott, B. P., Abbott, R., Acernese, F., et al. 2010, Searches for Gravitational Waves from Known Pulsars with Science Run 5 LIGO Data, ApJ, 713, 671 https://doi.org/10.1088/0004-637X/713/1/671
  5. Abbott, B. P., Abbott, R., Abbott, T. D., et al. 2017a, GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral, PRL, 119, 161101 https://doi.org/10.1103/PhysRevLett.119.161101
  6. Abbott, B. P., Abbott, R., Abbott, T. D., et al. 2017b, Upper Limits on Gravitational Waves from Scorpius X-1 from a Model-Based Cross-Correlation Search in Advanced LIGO Data, ApJ, 847, 47 https://doi.org/10.3847/1538-4357/aa86f0
  7. Abbott, B. P., Abbott, R., Abbott, T. D., et al. 2017c, First Narrow-Band Search for Continuous Gravitational Waves from Known Pulsars in Advanced Detector Data, PRD, 96, 122006 https://doi.org/10.1103/PhysRevD.96.122006
  8. Abbott, B. P., Abbott, R., Abbott, T. D., et al. 2018, Full Band All-Sky Search for Periodic Gravitational Waves in the O1 LIGO Data, PRD, 97, 102003 https://doi.org/10.1103/PhysRevD.97.102003
  9. Abdo, A. A., Ackermann, M., Ajello, M., et al. 2010, The First Fermi Large Area Telescope Catalog of Gamma-Ray Pulsars, ApJS, 187, 460 https://doi.org/10.1088/0067-0049/187/2/460
  10. Abramowski, A., Aharonian, F., Ait Benkhali, F., M. et al. 2017, Acceleration of Petaelectronvolt Protons in the Galactic Centre, Nature, 531, 476
  11. Andersson, N., Ferrari, V., Jones, D. I., et al. 2011, Gravitational Waves from Neutron Stars: Promises and Challenges, General Relativity and Gravitation (GreGr), 43, 409 https://doi.org/10.1007/s10714-010-1059-4
  12. Archibald, A. M., Stairs, I. H., Ransom, S. M., et al. 2009, A Radio Pulsar/X-Ray Binary Link, Science, 324, 1411 https://doi.org/10.1126/science.1172740
  13. Baade, W., & Zwicky, F. 1934, On Super-Novae, PNAS, 20, 254 https://doi.org/10.1073/pnas.20.5.254
  14. Bower, G. C., Deller, A., Demorest, P., & Brunthaler, A. 2015, The Proper Motion of the Galactic Center Pulsar Relative to Sagittarius A*, ApJ, 798, 120 https://doi.org/10.1088/0004-637X/798/2/120
  15. Cordes, J. M., & Lazio, T. J. W. 1997, Finding Radio Pulsars In and Beyond the Galactic Center, ApJ, 475, 557 https://doi.org/10.1086/303569
  16. Deneva, J. S., Cordes, J. M., & Lazio, T. J. W. 2009, Discovery of Three Pulsars from a Galactic Center Pulsar Population, ApJ, 702, L177 https://doi.org/10.1088/0004-637X/702/2/L177
  17. Degenaar, N., Wijnands, R., Miller, J. M., Reynolds, M. T., Kennea, J., & Gehrels, N. 2015, The Swift X-Ray Monitoring Campaign of the Center of the Milky Way, J. High Energy Astrophys., 7, 137 https://doi.org/10.1016/j.jheap.2015.03.005
  18. Dewdney, P. E., Hall, P. J., Schilizzi, R. T., & Lazio, T. J. L. W. 2009, The Square Kilometre Array, Proc. of IEEE, 97, 1482 https://doi.org/10.1109/JPROC.2009.2021005
  19. Dodson, R., Kim, C., Sohn, B., Rioja, M. J., Jung, T., Seymour, A., & Raja, W. 2014, The KaVA and KVN Pulsar Project, PASJ, 66, 10513
  20. Eatough, R. P., Falcke, H., Karuppusamy, R., Lee, K. J., et al. 2013, A Strong Magnetic Field around the Supermassive Black Hole at the Centre of the Galaxy, Nature, 501, 391 https://doi.org/10.1038/nature12499
  21. Gaensler, B. M., & Slane, P. O. 2006, The Evolution and Structure of Pulsar Wind Nebulae, ARA&A, 44, 17 https://doi.org/10.1146/annurev.astro.44.051905.092528
  22. Genzel, R., Hollenbach, D., & Townes, C. H. 1994, The Nucleus of Our Galaxy, Rep. Prog. Phys., 57, 417 https://doi.org/10.1088/0034-4885/57/5/001
  23. Green D. A. 2017, A Catalogue of Galactic Supernova Remnants (2017 June), http://www.mrao.cam.ac.uk/surveys/snrs/
  24. Gusten, R. 1989, Gas and Dust in the Inner Few Degrees of the Galaxy, IAUS, 136, 89
  25. Hooper, D., Cholis, I., & Linden, T. 2018, TeV Gamma-Rays from Galactic Center Pulsars, Physics of the Dark Universe, 21, 40 https://doi.org/10.1016/j.dark.2018.05.004
  26. Irwin, J. A. 2005, The Birthplace of Low-Mass X-Ray Binaries: Field Versus Globular Cluster Populations, ApJ, 631, 511 https://doi.org/10.1086/432611
  27. Hailey, C., Mori, K., Bauer, F. E., Berkowitz, M. E., Hong, J., & Jord, B. J. 2018, A Density Cusp of Quiescent X-Ray Binaries in the Central Parsec of the Galaxy, Nature, 556, 70 https://doi.org/10.1038/nature25029
  28. Jonker, P. G., Bassa, C. G., Nelemans, G., et al. 2011, The Galactic Bulge Survey: Outline and X-Ray Observations, ApJS, 194, 18 https://doi.org/10.1088/0067-0049/194/2/18
  29. Johnston, S., Kramer, M., Lorimer, D. R., Lyne, A. G., McLaughlin, M. A., Klein, B., & Manchester, R. N. 2006, Discovery of Two Pulsars towards the Galactic Centre, MNRAS, 373, L6 https://doi.org/10.1111/j.1745-3933.2006.00232.x
  30. Kalogera, V., & Webbink, R. F. 1998, Formation of Low-Mass X-Ray Binaries. II. Common Envelope Evolution of Primordial Binaries with Extreme Mass Ratios, ApJ, 493, 351 https://doi.org/10.1086/305085
  31. Kennea, J. A., Burrows, D. N., Kouveliotou, C., Palmer, D. M., et al. 2013, Swift Discovery of a New Soft Gamma Repeater, SGR J1745-29, Near Sagittarius A*, ApJ, 770, L24 https://doi.org/10.1088/2041-8205/770/2/L24
  32. Lasky, P. D. 2015, Gravitational Waves from Neutron Stars: A Review, PASA, Volume 32, e034 https://doi.org/10.1017/pasa.2015.35
  33. Law, C., Yusef-Zadeh, F., Cotton, W. D., & Maddalena, R. J. 2008, Green Bank Telescope Multiwavelength Survey of the Galactic Center Region, ApJS, 177, 255 https://doi.org/10.1086/533587
  34. Liu, Q. Z., van Paradijs, J., & van den Heuvel, E. P. J. 2006, Catalogue of High-Mass X-Ray Binaries in the Galaxy (4th ed.), A&A, 455, 1165 https://doi.org/10.1051/0004-6361:20064987
  35. Liu, Q. Z., van Paradijs, J., & van den Heuvel, E. P. J. 2007, A Catalogue of Low-Mass X-Ray Binaries in the Galaxy, LMC, and SMC (4th ed.), A&A, 469, 807 https://doi.org/10.1051/0004-6361:20077303
  36. Liu, K., Wex, N., Kramer, M., Cordes, J. M., & Lazio, T. J. W. 2012, Prospects for Probing the Spacetime of Sgr A* with Pulsars, ApJ, 747, 1 https://doi.org/10.1088/0004-637X/747/1/1
  37. Macquart, J.-P., Kanekar, N., Frail, D. A., & Ransom, S. M. 2010, A High-Frequency Search for Pulsars within the Central Parsec of Sgr A*, ApJ, 715, 939 https://doi.org/10.1088/0004-637X/715/2/939
  38. Manchester, R. N., Hobbs, G. B., Teoh, A., & Hobbs, M. 2005, The ATNF Pulsar Catalogue, AJ, 129, 1993 https://doi.org/10.1086/428488
  39. Miyaji, S., Nomoto, K., Yokoi, K., & Sugimoto, D. 1980, Supernova Triggered by Electron Captures, PASJ, 32, 303
  40. Mori, K., Gotthelf, E. V., Zhang, S., An, H., et al. 2013, NuSTAR Discovery of a 3.76 s Transient Magnetar Near Sagittarius A*, ApJ, 770, L23 https://doi.org/10.1088/2041-8205/770/2/L23
  41. Muno, M. P., Baganoff, F. K., Bautz, M. W., Brandt, W. N., Garmire, G. P., & Ricker, G. R. 2003, A Deep Chandra Catalog of X-Ray Point Sources toward the Galactic Center, ApJ, 589, 225 https://doi.org/10.1086/374639
  42. Muno, M. P., Bauer, F. E., Baganoff, F. K., et al. 2009, A Catalog of X-Ray Point Sources from Two Megaseconds of Chandra Observations of the Galactic Center, ApJS, 181, 110 https://doi.org/10.1088/0067-0049/181/1/110
  43. Ofek, E. O. 2009, Space and Velocity Distributions of Galactic Isolated Old Neutron Stars, PASP, 121, 814 https://doi.org/10.1086/605389
  44. Olausen, S. A., & Kaspi, V. M. 2014, The McGill Magnetar Catalog, ApJS, 212, 6 https://doi.org/10.1088/0067-0049/212/1/6
  45. Reig, P. 2011, Be/X-Ray Binaries, Astrophys. Space Sci., 332, 1 https://doi.org/10.1007/s10509-010-0575-8
  46. Revnivtsev, M., Lutovinov, A., Sazonov, S., Gilfanov, M., Grebenev, S., & Sunyaev, R. 2008, Low-Mass X-Ray Binaries in the Bulge of the Milky Way, ApJ, 491, 209
  47. Reynolds, S. P., Borkowski, K. J., Green, D. A., Hwang, U., Harrus, I., & Petre, R. 2008, The Youngest Galactic Supernova Remnant: G1.9+0.3, ApJ, 680, L41 https://doi.org/10.1086/589570
  48. Ritter, H., & Kolb, U. 2003, Catalogue of Cataclysmic Binaries, Low-Mass X-Ray Binaries and Related Objects (7th ed.), A&A 404, 301, http://heasarc.gsfc.nasa.gov/W3Browse/all/ritterlmxb.html https://doi.org/10.1051/0004-6361:20030330
  49. Schnitzeler, D. H. F. M., Eatough, R. P., Ferri'ere, K., Kramer, M., & Lee, K. J. 2016, Radio Polarimetry of Galactic Centre Pulsars, MNRAS, 459, 3005 https://doi.org/10.1093/mnras/stw841
  50. Sartore, N., Ripamonti, E., Treves, A., & Turolla, R. 2010, Galactic Neutron Stars. I. Space and Velocity Distributions in the Disk and in the Halo, A&A, 510, A23 https://doi.org/10.1051/0004-6361/200912222
  51. Serabyn, E., & Morris, M. 1996, Sustained Star Formation in the Central Stellar Cluster of the Milky Way, Nature, 382, 602 https://doi.org/10.1038/382602a0
  52. Tammann, G. A., Loeffler, W., & Schroeder, A. 1994, The Galactic Supernova Rate, ApJS, 92, 487 https://doi.org/10.1086/192002
  53. Torne, P., Desvignes, G., Eatough, R. P., Karuppusamy, R., Paubert, G., Kramer, M., Cognard, I., Champion, D. J., & Spitler, L. G. 2017, Detection of the Magnetar SGR J1745-2900 up to 291 GHz with Evidence of Polarized Millimetre Emission, MNRAS, 465, 242 https://doi.org/10.1093/mnras/stw2757
  54. Watts, A. L., Krishnan, B., Bildsten, L., & Schutz, B. F. 2008, Detecting Gravitational Wave Emission from the Known Accreting Neutron Stars, MNRAS, 389, 839 https://doi.org/10.1111/j.1365-2966.2008.13594.x
  55. Wharton, R. S., Chatterjee, S., Cordes, J. M., Deneva, J. S., & Lazio, T. J. W. 2011, Multiwavelength Constraints on Pulsar Populations in the Galactic Center, ApJ, 753, 108