Pulsar wind nebulae around the southern pulsars PSR B1643-43 and PSR B1706-44
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) an...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00046256_v121_n6_p3133_Giacani |
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todo:paper_00046256_v121_n6_p3133_Giacani2023-10-03T13:59:40Z Pulsar wind nebulae around the southern pulsars PSR B1643-43 and PSR B1706-44 Giacani, E.B. Frail, D.A. Goss, W.M. Vieytes, M. ISM: general Pulsars: individual (PSR 1643-43, PSR 1706-44) Supernova remnants 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00046256_v121_n6_p3133_Giacani |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
ISM: general Pulsars: individual (PSR 1643-43, PSR 1706-44) Supernova remnants |
| spellingShingle |
ISM: general Pulsars: individual (PSR 1643-43, PSR 1706-44) Supernova remnants 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 |
| topic_facet |
ISM: general Pulsars: individual (PSR 1643-43, PSR 1706-44) Supernova remnants |
| description |
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. |
| format |
JOUR |
| author |
Giacani, E.B. Frail, D.A. Goss, W.M. Vieytes, M. |
| author_facet |
Giacani, E.B. Frail, D.A. Goss, W.M. Vieytes, M. |
| author_sort |
Giacani, E.B. |
| title |
Pulsar wind nebulae around the southern pulsars PSR B1643-43 and PSR B1706-44 |
| title_short |
Pulsar wind nebulae around the southern pulsars PSR B1643-43 and PSR B1706-44 |
| title_full |
Pulsar wind nebulae around the southern pulsars PSR B1643-43 and PSR B1706-44 |
| title_fullStr |
Pulsar wind nebulae around the southern pulsars PSR B1643-43 and PSR B1706-44 |
| title_full_unstemmed |
Pulsar wind nebulae around the southern pulsars PSR B1643-43 and PSR B1706-44 |
| title_sort |
pulsar wind nebulae around the southern pulsars psr b1643-43 and psr b1706-44 |
| url |
http://hdl.handle.net/20.500.12110/paper_00046256_v121_n6_p3133_Giacani |
| work_keys_str_mv |
AT giacanieb pulsarwindnebulaearoundthesouthernpulsarspsrb164343andpsrb170644 AT frailda pulsarwindnebulaearoundthesouthernpulsarspsrb164343andpsrb170644 AT gosswm pulsarwindnebulaearoundthesouthernpulsarspsrb164343andpsrb170644 AT vieytesm pulsarwindnebulaearoundthesouthernpulsarspsrb164343andpsrb170644 |
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1807323516179054592 |