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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" (2003) Monthly Notices of the Royal Astronomical Society. 345(2):671-677
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Abstract:

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.

Registro:

Documento: Artículo
Título:Observations of the neutral hydrogen surrounding the radio-quiet neutron star RX J0822-4300 in Puppis A
Autor:Reynoso, E.M.; Green, A.J.; Johnston, S.; Dubner, G.M.; Giacani, E.B.; Goss, W.M.
Filiación:School of Physics, University of Sydney, Sydney, NSW 2006, Australia
Inst. de Astron./Fis. del Espacio, CC 67, Suc 28, 1428 Buenos Aires, Argentina
National Radio Astronomy Observatory, PO Box 0, Socorro, NM 87801, United States
Carrera del Investigador Cie., CONICET, Buenos Aires, Argentina
CONICET, Buenos Aires, Argentina
Palabras clave:ISM:Individual:Puppis A; ISM:jets and outflows; ISM:lines and bands; Stars:Neutron; Supernova remnants; X-rays:individual:RX J0822-4300
Año:2003
Volumen:345
Número:2
Página de inicio:671
Página de fin:677
DOI: http://dx.doi.org/10.1046/j.1365-8711.2003.06978.x
Título revista:Monthly Notices of the Royal Astronomical Society
Título revista abreviado:Mon. Not. R. Astron. Soc.
ISSN:00358711
CODEN:MNRAA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v345_n2_p671_Reynoso

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Citas:

---------- APA ----------
Reynoso, E.M., Green, A.J., Johnston, S., Dubner, G.M., Giacani, E.B. & Goss, W.M. (2003) . Observations of the neutral hydrogen surrounding the radio-quiet neutron star RX J0822-4300 in Puppis A. Monthly Notices of the Royal Astronomical Society, 345(2), 671-677.
http://dx.doi.org/10.1046/j.1365-8711.2003.06978.x
---------- CHICAGO ----------
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" . Monthly Notices of the Royal Astronomical Society 345, no. 2 (2003) : 671-677.
http://dx.doi.org/10.1046/j.1365-8711.2003.06978.x
---------- MLA ----------
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" . Monthly Notices of the Royal Astronomical Society, vol. 345, no. 2, 2003, pp. 671-677.
http://dx.doi.org/10.1046/j.1365-8711.2003.06978.x
---------- VANCOUVER ----------
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. Mon. Not. R. Astron. Soc. 2003;345(2):671-677.
http://dx.doi.org/10.1046/j.1365-8711.2003.06978.x