Discovery of gamma-and X-ray pulsations from the young and energetic PSR J1357-6429 with Fermi and XMM-Newton
Context. Since the launch of the Fermi satellite, the number of known gamma-ray pulsars has increased tenfold. Most gamma-ray detected pulsars are young and energetic, and many are associated with TeV sources. PSR J1357-6429 is a high spin-down power pulsar (E = 3.1 × 1036 erg s -1), discovered duri...
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| Format: | Journal Article |
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EDP Sciences
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/6202 |
| _version_ | 1848745008867311616 |
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| author | Lemoine-Goumard, M. Zavlin, V. Grondin, M. Shannon, Ryan Smith, D. Burgay, M. Camilo, F. Cohen-Tanugi, J. Freire, P. Grove, J. Guillemot, L. Johnston, S. Keith, M. Kramer, M. Manchester, R. Michelson, P. Parent, D. Possenti, A. Ray, P. Renaud, M. Thorsett, S. Weltevrede, P. Wolff, M. |
| author_facet | Lemoine-Goumard, M. Zavlin, V. Grondin, M. Shannon, Ryan Smith, D. Burgay, M. Camilo, F. Cohen-Tanugi, J. Freire, P. Grove, J. Guillemot, L. Johnston, S. Keith, M. Kramer, M. Manchester, R. Michelson, P. Parent, D. Possenti, A. Ray, P. Renaud, M. Thorsett, S. Weltevrede, P. Wolff, M. |
| author_sort | Lemoine-Goumard, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Context. Since the launch of the Fermi satellite, the number of known gamma-ray pulsars has increased tenfold. Most gamma-ray detected pulsars are young and energetic, and many are associated with TeV sources. PSR J1357-6429 is a high spin-down power pulsar (E = 3.1 × 1036 erg s -1), discovered during the Parkes multibeam survey of the Galactic plane, with significant timing noise typical of very young pulsars. In the very-high-energy domain (E > 100 GeV), H.E.S.S. has reported the detection of the extended source HESS J1356-645 (intrinsic Gaussian width of 12') whose centroid lies 7' from PSR J1357-6429. Aims. We search for gamma-and X-ray pulsations from this pulsar, characterize the neutron star emission and explore the environment of PSR J1357-6429. Methods. Using a rotational ephemeris obtained with 74 observations made with the Parkes telescope at 1.4 GHz, we phase-fold more than two years of gamma-ray data acquired by the Large Area Telescope on-board Fermi as well as those collected with XMM-Newton, and perform gamma-ray spectral modeling. Results. Significant gamma-and X-ray pulsations are detected from PSR J1357-6429. The light curve in both bands shows one broad peak. Gamma-ray spectral analysis of the pulsed emission suggests that it is well described by a simple power-law of index 1.5 ± 0.3stat ± 0.3syst with an exponential cut-off at 0.8 ± 0.3 stat ± 0.3syst GeV and an integral photon flux above 100 MeV of (6.5 ± 1.6stat ± 2.3syst) × 10-8 cm-2 s-1. The X-ray spectra obtained from the new data provide results consistent with previous work. Upper limits on the gamma-ray emission from its potential pulsar wind nebula (PWN) are also reported. Conclusions. Assuming a distance of 2.4 kpc, the Fermi LAT energy flux yields a gamma-ray luminosity for PSR J1357-6429 of L ? = (2.13 ± 0.25stat ± 0.83 syst) × 1034 erg s-1, consistent with an L? E relationship. The Fermi non-detection of the pulsar wind nebula associated with HESS J1356-645 provides new constraints on the electron population responsible for the extended TeV emission. © 2011 ESO. |
| first_indexed | 2025-11-14T06:10:32Z |
| format | Journal Article |
| id | curtin-20.500.11937-6202 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:10:32Z |
| publishDate | 2011 |
| publisher | EDP Sciences |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-62022017-09-13T14:41:37Z Discovery of gamma-and X-ray pulsations from the young and energetic PSR J1357-6429 with Fermi and XMM-Newton Lemoine-Goumard, M. Zavlin, V. Grondin, M. Shannon, Ryan Smith, D. Burgay, M. Camilo, F. Cohen-Tanugi, J. Freire, P. Grove, J. Guillemot, L. Johnston, S. Keith, M. Kramer, M. Manchester, R. Michelson, P. Parent, D. Possenti, A. Ray, P. Renaud, M. Thorsett, S. Weltevrede, P. Wolff, M. Context. Since the launch of the Fermi satellite, the number of known gamma-ray pulsars has increased tenfold. Most gamma-ray detected pulsars are young and energetic, and many are associated with TeV sources. PSR J1357-6429 is a high spin-down power pulsar (E = 3.1 × 1036 erg s -1), discovered during the Parkes multibeam survey of the Galactic plane, with significant timing noise typical of very young pulsars. In the very-high-energy domain (E > 100 GeV), H.E.S.S. has reported the detection of the extended source HESS J1356-645 (intrinsic Gaussian width of 12') whose centroid lies 7' from PSR J1357-6429. Aims. We search for gamma-and X-ray pulsations from this pulsar, characterize the neutron star emission and explore the environment of PSR J1357-6429. Methods. Using a rotational ephemeris obtained with 74 observations made with the Parkes telescope at 1.4 GHz, we phase-fold more than two years of gamma-ray data acquired by the Large Area Telescope on-board Fermi as well as those collected with XMM-Newton, and perform gamma-ray spectral modeling. Results. Significant gamma-and X-ray pulsations are detected from PSR J1357-6429. The light curve in both bands shows one broad peak. Gamma-ray spectral analysis of the pulsed emission suggests that it is well described by a simple power-law of index 1.5 ± 0.3stat ± 0.3syst with an exponential cut-off at 0.8 ± 0.3 stat ± 0.3syst GeV and an integral photon flux above 100 MeV of (6.5 ± 1.6stat ± 2.3syst) × 10-8 cm-2 s-1. The X-ray spectra obtained from the new data provide results consistent with previous work. Upper limits on the gamma-ray emission from its potential pulsar wind nebula (PWN) are also reported. Conclusions. Assuming a distance of 2.4 kpc, the Fermi LAT energy flux yields a gamma-ray luminosity for PSR J1357-6429 of L ? = (2.13 ± 0.25stat ± 0.83 syst) × 1034 erg s-1, consistent with an L? E relationship. The Fermi non-detection of the pulsar wind nebula associated with HESS J1356-645 provides new constraints on the electron population responsible for the extended TeV emission. © 2011 ESO. 2011 Journal Article http://hdl.handle.net/20.500.11937/6202 10.1051/0004-6361/201117413 EDP Sciences unknown |
| spellingShingle | Lemoine-Goumard, M. Zavlin, V. Grondin, M. Shannon, Ryan Smith, D. Burgay, M. Camilo, F. Cohen-Tanugi, J. Freire, P. Grove, J. Guillemot, L. Johnston, S. Keith, M. Kramer, M. Manchester, R. Michelson, P. Parent, D. Possenti, A. Ray, P. Renaud, M. Thorsett, S. Weltevrede, P. Wolff, M. Discovery of gamma-and X-ray pulsations from the young and energetic PSR J1357-6429 with Fermi and XMM-Newton |
| title | Discovery of gamma-and X-ray pulsations from the young and energetic PSR J1357-6429 with Fermi and XMM-Newton |
| title_full | Discovery of gamma-and X-ray pulsations from the young and energetic PSR J1357-6429 with Fermi and XMM-Newton |
| title_fullStr | Discovery of gamma-and X-ray pulsations from the young and energetic PSR J1357-6429 with Fermi and XMM-Newton |
| title_full_unstemmed | Discovery of gamma-and X-ray pulsations from the young and energetic PSR J1357-6429 with Fermi and XMM-Newton |
| title_short | Discovery of gamma-and X-ray pulsations from the young and energetic PSR J1357-6429 with Fermi and XMM-Newton |
| title_sort | discovery of gamma-and x-ray pulsations from the young and energetic psr j1357-6429 with fermi and xmm-newton |
| url | http://hdl.handle.net/20.500.11937/6202 |