Observations of the neutral hydrogen surrounding the radio-quiet neutron star RX J0822-4300 in Puppis A
We have observed the H I distribution in an area 40 × 40 arcmin 2 around the neutron star candidate RX J0822-4300, which is located in the supernova remnant Puppis A. The observations of the λ21-cm line were obtained with the Australia Telescope Compact Array and were combined with single-dish data...
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todo:paper_00358711_v345_n2_p671_Reynoso2023-10-03T14:46:42Z Observations of the neutral hydrogen surrounding the radio-quiet neutron star RX J0822-4300 in Puppis A Reynoso, E.M. Green, A.J. Johnston, S. Dubner, G.M. Giacani, E.B. Goss, W.M. ISM:Individual:Puppis A ISM:jets and outflows ISM:lines and bands Stars:Neutron Supernova remnants X-rays:individual:RX J0822-4300 We have observed the H I distribution in an area 40 × 40 arcmin 2 around the neutron star candidate RX J0822-4300, which is located in the supernova remnant Puppis A. The observations of the λ21-cm line were obtained with the Australia Telescope Compact Array and were combined with single-dish data from the Southern Galactic Plane Survey. The spatial resolution is 90 arcsec, and the velocity resolution is 1 km s-1. A sensitivity of ∼0.7 K was achieved. The results revealed a double-lobed feature of reduced emission at +16 km s-1, centred on the central compact object (CCO), and aligned with an H I hole blueshifted by 13 km s -1. The Hi depressions have probably been created by the sweeping up of ∼2 M⊙. The alignment between the lobes and the optical expansion centre of Puppis A suggests that the CCO could be ejecting two opposite jets. The velocity at which the two lobes are best defined has allowed us to confirm that the distance to Puppis A is 2.2 kpc, based on a systemic velocity of +16 km s-1. The hydrogen column density computed using this systemic velocity is consistent with estimates from models for X-ray spectra, thus reinforcing our conclusion that the kinematic distance is 2.2 kpc. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00358711_v345_n2_p671_Reynoso |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
ISM:Individual:Puppis A ISM:jets and outflows ISM:lines and bands Stars:Neutron Supernova remnants X-rays:individual:RX J0822-4300 |
| spellingShingle |
ISM:Individual:Puppis A ISM:jets and outflows ISM:lines and bands Stars:Neutron Supernova remnants X-rays:individual:RX J0822-4300 Reynoso, E.M. Green, A.J. Johnston, S. Dubner, G.M. Giacani, E.B. Goss, W.M. Observations of the neutral hydrogen surrounding the radio-quiet neutron star RX J0822-4300 in Puppis A |
| topic_facet |
ISM:Individual:Puppis A ISM:jets and outflows ISM:lines and bands Stars:Neutron Supernova remnants X-rays:individual:RX J0822-4300 |
| description |
We have observed the H I distribution in an area 40 × 40 arcmin 2 around the neutron star candidate RX J0822-4300, which is located in the supernova remnant Puppis A. The observations of the λ21-cm line were obtained with the Australia Telescope Compact Array and were combined with single-dish data from the Southern Galactic Plane Survey. The spatial resolution is 90 arcsec, and the velocity resolution is 1 km s-1. A sensitivity of ∼0.7 K was achieved. The results revealed a double-lobed feature of reduced emission at +16 km s-1, centred on the central compact object (CCO), and aligned with an H I hole blueshifted by 13 km s -1. The Hi depressions have probably been created by the sweeping up of ∼2 M⊙. The alignment between the lobes and the optical expansion centre of Puppis A suggests that the CCO could be ejecting two opposite jets. The velocity at which the two lobes are best defined has allowed us to confirm that the distance to Puppis A is 2.2 kpc, based on a systemic velocity of +16 km s-1. The hydrogen column density computed using this systemic velocity is consistent with estimates from models for X-ray spectra, thus reinforcing our conclusion that the kinematic distance is 2.2 kpc. |
| format |
JOUR |
| author |
Reynoso, E.M. Green, A.J. Johnston, S. Dubner, G.M. Giacani, E.B. Goss, W.M. |
| author_facet |
Reynoso, E.M. Green, A.J. Johnston, S. Dubner, G.M. Giacani, E.B. Goss, W.M. |
| author_sort |
Reynoso, E.M. |
| title |
Observations of the neutral hydrogen surrounding the radio-quiet neutron star RX J0822-4300 in Puppis A |
| title_short |
Observations of the neutral hydrogen surrounding the radio-quiet neutron star RX J0822-4300 in Puppis A |
| title_full |
Observations of the neutral hydrogen surrounding the radio-quiet neutron star RX J0822-4300 in Puppis A |
| title_fullStr |
Observations of the neutral hydrogen surrounding the radio-quiet neutron star RX J0822-4300 in Puppis A |
| title_full_unstemmed |
Observations of the neutral hydrogen surrounding the radio-quiet neutron star RX J0822-4300 in Puppis A |
| title_sort |
observations of the neutral hydrogen surrounding the radio-quiet neutron star rx j0822-4300 in puppis a |
| url |
http://hdl.handle.net/20.500.12110/paper_00358711_v345_n2_p671_Reynoso |
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