Navegar

Colección

Datos Estadísticas

Artículo

Estamos trabajando para incorporar este artículo al repositorio
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

This paper presents a new study of the spectral index distribution of the supernova remnant (SNR) Puppis A. The nature of field compact sources is also investigated according to the measured spectral indices. This work is based on new observations of Puppis A and its surroundings performed with the Australia Telescope Compact Array in two configurations using the Compact Array Broad-band Backend centred at 1.75 GHz. We find that the global spectral index of Puppis A is α = -0.563 ± 0.013. Local variations have been detected, however this global index represents well the bulk of the SNR. At the SE, we found a pattern of parallel strips with a flat spectrum compatible with small-scale filaments, although not correlated in detail. The easternmost filament agrees with the idea that the SNR shock front is interacting with an external cloud. There is no evidence of the previously suggested correlation between emissivity and spectral index. A number of compact features are proposed to be evolved clumps of ejecta based on their spectral indices, although dynamic measurements are needed to confirm this hypothesis. We estimate precise spectral indices for the five previously known field sources, two of which are found to be double (one of them, probably triple), and catalogue 40 new sources. In the light of these new determinations, the extragalactic nature previously accepted for some compact sources is now in doubt. © 2015 The Authors.

Registro:

Documento: Artículo
Título:Radio spectral characteristics of the supernova remnant puppis A and nearby sources
Autor:Reynoso, E.M.; Walsh, A.J.
Filiación:Instituto de Astronomía y Física del Espacio IAFE, Pabellón IAFE, Ciudad Universitaria, Av. Int. Güiraldes 2620, Ciudad Autónoma de Buenos Aires, Argentina
International Centre for Radio Astronomy Research, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
Palabras clave:ISM: individual objects: puppis A; ISM: supernova remnants; Radiation mechanisms: non-thermal; Radio continuum: ISM; Techniques: interferometric
Año:2015
Volumen:451
Número:3
Página de inicio:3044
Página de fin:3054
DOI: http://dx.doi.org/10.1093/mnras/stv1147
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_v451_n3_p3044_Reynoso

Referencias:

  • Anderson, M.C., Rudnick, L., (1993) ApJ, 408, p. 514
  • Anderson, M.C., Rudnick, L., (1996) ApJ, 456, p. 234
  • Anderson, M.C., Jones, T.W., Rudnick, L., Tregillis, I.L., Kang, H., (1994) ApJ, 421, p. L31
  • Arendt, R.G., Dwek, E., Petre, R., Dickel, J.R., Roger, R.S., Milne, D.K., Kesteven, M.J., (1990) ApJ, 350, p. 266
  • Arendt, R.G., (2010) ApJ, 725, p. 585
  • Becker, W., Prinz, T., Winkler, P.F., Petre, R., (2012) ApJ, 755, p. 141
  • Bietenholz, M.F., Kassim, N.E., Weiler, K.W., (2001) ApJ, 560, p. 772
  • Castelletti, G., Dubner, G., Golap, K., Goss, W.M., (2006) A&A, 459, p. 535
  • Costain, C.H., (1960) MNRAS, 120, p. 248
  • Day, G.A., Caswell, J.L., Cooke, D.J., (1972) Aust. J. Phys. Astrophys. Suppl., 25, p. 1
  • Dickel, J.R., Milne, D.K., (1976) Aust. J. Phys., 29, p. 435
  • Doherty, M., Johnston, S., Green, A.J., Roberts, M.S.E., Romani, R.W., Gaensler, B.M., Crawford, F., (2003) MNRAS, 339, p. 1048
  • Dubner, G.M., Arnal, E.M., (1988) A&AS, 75, p. 363
  • Dubner, G.M., Braun, R., Winkler, P.F., Goss, W.M., (1991) AJ, 101, p. 1466
  • Dubner, G., Loiseau, N., Rodríguez-Pascual, P., Smith, M.J.S., Giacani, E., Castelletti, G., (2013) A&A, 555, p. A9
  • Duncan, A.R., Stewart, R.T., Haynes, R.F., Jones, K.L., (1996) MNRAS, 280, p. 252
  • Fuerst, E., Reich, W., (1986) A&A, 163, p. 185
  • Gaensler, B.M., Brazier, K.T.S., Manchester, R.N., Johnston, S., Green, A.J., (1999) MNRAS, 305, p. 724
  • Ghavamian, P., Hughes, J.P., Williams, T.B., (2005) ApJ, 635, p. 365
  • Green, A.J., (1971) Aust. J. Phys., 24, p. 773
  • Green, D.A., (1990) AJ, 100, p. 1927
  • Green, D.A., (2014) Bull. Astron. Soc. India, 42, p. 47
  • (2015) A&A, 575, p. A81
  • Hewitt, J.W., Grondin, M.-H., Lemoine-Goumard, M., Reposeur, T., Ballet, J., Tanaka, T., (2012) ApJ, 759, p. 89
  • Hui, C.Y., Becker, W., (2006) A&A, 457, p. L33
  • Hwang, U., Flanagan, K.A., Petre, R., (2005) ApJ, 635, p. 355
  • Hwang, U., Petre, R., Flanagan, K.A., (2008) ApJ, 676, p. 378
  • Ingallinera, A., Trigilio, C., Umana, G., Leto, P., Agliozzo, C., Buemi, C., (2014) MNRAS, 445, p. 4507
  • Katsuda, S., Mori, K., Tsunemi, H., Park, S., Hwang, U., Burrows, D.N., Hughes, J.P., Slane, P.O., (2008) ApJ, 678, p. 297
  • Katsuda, S., Hwang, U., Petre, R., Park, S., Mori, K., Tsunemi, H., (2010) ApJ, 714, p. 1725
  • Kundu, M.R., (1970) ApJ, 162, p. 17
  • Leahy, D.A., (2006) ApJ, 647, p. 1125
  • Leahy, D., Tian, W., (2005) A&A, 440, p. 929
  • McConnell, D., Sadler, E.M., Murphy, T., Ekers, R.D., (2012) MNRAS, 422, p. 1527
  • Mills, B.Y., Slee, O.B., Hill, E.R., (1960) Aust. J. Phys., 13, p. 676
  • Milne, D.K., (1971) Aust. J. Phys., 24, p. 429
  • Milne, D.K., (1972) Aust. J. Phys., 25, p. 307
  • Milne, D.K., Hill, E.R., (1969) Aust. J. Phys., 22, p. 211
  • Milne, D.K., Goss, W.M., Danziger, I.J., (1983) MNRAS, 204, p. 237
  • Milne, D.K., Stewart, R.T., Haynes, R.F., (1993) MNRAS, 261, p. 366
  • Paron, S., Dubner, G., Reynoso, E., Rubio, M., (2008) A&A, 480, p. 439
  • Petre, R., Kriss, G.A., Winkler, P.F., Canizares, C.R., (1982) ApJ, 258, p. 22
  • Petre, R., Becker, C.M., Winkler, P.F., (1996) ApJ, 465, p. L43
  • Reich, P., Reich, W., (1988) A&AS, 74, p. 7
  • Reynolds, S.P., (2001) Space Sci. Rev., 99, p. 177
  • Reynoso, E.M., Green, A.J., (2007) MNRAS, 375, p. 92
  • Reynoso, E.M., Dubner, G.M., Goss, W.M., Arnal, E.M., (1995) AJ, 110, p. 318
  • Sault, R.J., Teuben, P.J., Wright, M.C.H., Astronomical Data Analysis Software and Systems IV, A Retrospective View of MIRIAD (1995) Astron. Soc. Pac., 77, p. 433. , Shaw R. A., Payne H. E., Hayes J. J. E., eds, ASP Conf. Ser., San Francisco
  • Slee, O.B., (1977) Aust. J. Phys. Astrophys. Suppl., 43, p. 1
  • Strom, R., Johnston, H.M., Verbunt, F., Aschenbach, B., (1995) Nature, 373, p. 590
  • Turtle, A.J., Pugh, J.F., Kenderdine, S., Pauliny-Toth, I.I.K., (1962) MNRAS, 124, p. 297
  • Uyaniker, B., Reich, W., Yar, A., Fürst, E., (2004) A&A, 426, p. 909
  • van den Bergh, S., (1971) ApJ, 165, p. 457
  • Wang, C.-Y., Chevalier, R.A., (2002) ApJ, 574, p. 155
  • Watson, M.G., (2009) A&A, 493, p. 339
  • Winkler, P.F., Kirshner, R.P., (1985) ApJ, 299, p. 981
  • Winkler, P.F., Petre, R., (2007) ApJ, 670, p. 635
  • Winkler, P.F., Tuttle, J.H., Kirshner, R.P., Irwin, M.J., Supernova Remnants and the Interstellar Medium Kinematics of Oxygen-Rich Filaments in Puppis a (1988), 101, p. 65. , Roger R. S., Landecker T. L., eds, IAU Colloq, Cambridge Univ. Press, Cambridge; Woermann, B., Gaylard, M.J., Otrupcek, R., (2000) MNRAS, 317, p. 421
  • Xiao, L., Fürst, E., Reich, W., Han, J.L., (2008) A&A, 482, p. 783
  • Zavlin, V.E., Trümper, J., Pavlov, G.G., (1999) ApJ, 525, p. 959

Citas:

---------- APA ----------
Reynoso, E.M. & Walsh, A.J. (2015) . Radio spectral characteristics of the supernova remnant puppis A and nearby sources. Monthly Notices of the Royal Astronomical Society, 451(3), 3044-3054.
http://dx.doi.org/10.1093/mnras/stv1147
---------- CHICAGO ----------
Reynoso, E.M., Walsh, A.J. "Radio spectral characteristics of the supernova remnant puppis A and nearby sources" . Monthly Notices of the Royal Astronomical Society 451, no. 3 (2015) : 3044-3054.
http://dx.doi.org/10.1093/mnras/stv1147
---------- MLA ----------
Reynoso, E.M., Walsh, A.J. "Radio spectral characteristics of the supernova remnant puppis A and nearby sources" . Monthly Notices of the Royal Astronomical Society, vol. 451, no. 3, 2015, pp. 3044-3054.
http://dx.doi.org/10.1093/mnras/stv1147
---------- VANCOUVER ----------
Reynoso, E.M., Walsh, A.J. Radio spectral characteristics of the supernova remnant puppis A and nearby sources. Mon. Not. R. Astron. Soc. 2015;451(3):3044-3054.
http://dx.doi.org/10.1093/mnras/stv1147