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Abstract:

We present high-resolution VLA images taken at the wavelengths of 20, 6, and 3.6 cm in the vicinity of the pulsars PSR B1706-44 (PSR J1709-4428) and PSR B1643-43 (PSR J1646-4346). Both of these pulsars are young (< 30,000 yr) and have large spin-down luminosities (E > 1035 ergs s-1) and hence are good candidates to search for extended synchrotron nebulae excited by the relativistic pulsar wind. For PSR B1643-43 we found evidence of a 4′ comet-shaped nebula, suggestive of a synchrotron "wake" left by a fast-moving pulsar. PSR B1706-44 appears surrounded by a spherical nebula approximately 3′ in diameter. Based on their morphology, the detection of significant linear polarization (> 20%), and their flat radio spectra (α = 0.25-0.3, where Sν ∝ ν-α), we argue that these are wind nebulae powered by the rotational energy loss of the respective pulsars.

Registro:

Documento: Artículo
Título:Pulsar wind nebulae around the southern pulsars PSR B1643-43 and PSR B1706-44
Autor:Giacani, E.B.; Frail, D.A.; Goss, W.M.; Vieytes, M.
Filiación:Inst. Astronomia y Fisica Espacio, Casilla de Correo 67, Sucursal 28, 1428 Buenos Aires, Argentina
National Radio Astronomy Observatory, P.O. Box O, Socorro, NM 87801, United States
Palabras clave:ISM: general; Pulsars: individual (PSR 1643-43, PSR 1706-44); Supernova remnants
Año:2001
Volumen:121
Número:6
Página de inicio:3133
Página de fin:3137
DOI: http://dx.doi.org/10.1086/321082
Título revista:Astronomical Journal
Título revista abreviado:Astron. J.
ISSN:00046256
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046256_v121_n6_p3133_Giacani

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Citas:

---------- APA ----------
Giacani, E.B., Frail, D.A., Goss, W.M. & Vieytes, M. (2001) . Pulsar wind nebulae around the southern pulsars PSR B1643-43 and PSR B1706-44. Astronomical Journal, 121(6), 3133-3137.
http://dx.doi.org/10.1086/321082
---------- CHICAGO ----------
Giacani, E.B., Frail, D.A., Goss, W.M., Vieytes, M. "Pulsar wind nebulae around the southern pulsars PSR B1643-43 and PSR B1706-44" . Astronomical Journal 121, no. 6 (2001) : 3133-3137.
http://dx.doi.org/10.1086/321082
---------- MLA ----------
Giacani, E.B., Frail, D.A., Goss, W.M., Vieytes, M. "Pulsar wind nebulae around the southern pulsars PSR B1643-43 and PSR B1706-44" . Astronomical Journal, vol. 121, no. 6, 2001, pp. 3133-3137.
http://dx.doi.org/10.1086/321082
---------- VANCOUVER ----------
Giacani, E.B., Frail, D.A., Goss, W.M., Vieytes, M. Pulsar wind nebulae around the southern pulsars PSR B1643-43 and PSR B1706-44. Astron. J. 2001;121(6):3133-3137.
http://dx.doi.org/10.1086/321082