Abstract
Protostellar jets are one of the primary signposts of star formation. A handful of protostellar objects exhibit radio emission from ionized jets, of which a few display negative spectral indices, indicating the presence of synchrotron emission. In this study, we characterize the radio spectra of HH80-81 jet with the help of a numerical model that we have developed earlier, which takes into account both thermal free–free and non-thermal synchrotron emission mechanisms. For modeling the HH80-81 jet, we consider jet emission towards the central region close to the driving source along with two Herbig-Haro objects, HH80 and HH81. We have obtained the best-fit parameters for each of these sources by fitting the model to radio observational data corresponding to two frequency windows taken across two epochs. Considering an electron number density in the range of \(10^3\)–\(10^5\) cm\(^{-3}\), we obtained the thickness of the jet edges and fraction of relativistic electrons that contribute to non-thermal emission in the range of \(0.01^{\circ }\)–\(0.1^{\circ }\) and \(10^{-7}\)–\(10^{-4}\), respectively. For the best-fit parameter sets, the model spectral indices lie in the range of − 0.15 to \(+\)0.11 within the observed frequency windows.
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References
Añez-López N., Osorio M., Busquet G., et al. 2020, ApJ, 888, 41
Araudo A. T., Padovani M., Marcowith A. 2021, MNRAS, 504, 2405
Bellan P. M., You S., Hsu S. C. 2005, Simulating Astrophysical Jets in Laboratory Experiments, ed Kyrala G. (Dordrecht: Springer Netherlands) p. 203
Berezhko E. G., Ellison D. C. 1999, ApJ, 526, 385
Biermann P. L., Strittmatter P. A. 1987, ApJ, 322, 643
Blandford R., Meier D., Readhead A. 2019, Annu. Rev. Astron. Astrophys., 57, 467
Blandford R. D., Payne D. G. 1982, MNRAS, 199, 883
Bonito R., Orlando S., Peres G., et al. 2010, A &A, 511, A42
Bosch-Ramon V., Romero G. E., Araudo A. T., Paredes Y. M. 2010, A &A, 511, A8
Carrasco-González C., Rodríguez L. F., Anglada G., et al. 2010, Science, 330, 1209
Carrasco-González C., Galván-Madrid R., Anglada G., et al. 2012, ApJ, 752, L29
Cerqueira A. H., de Gouveia Dal Pino E. M. 2001, ApJ, 550, L91
Cheng Y., Qiu K., Zhang Q., et al. 2019, ApJ, 877, 112
Dhawan V., Mirabel I. F., Rodríguez L. F. 2000, ApJ, 543, 373
Felli M., Massi F., Robberto M., Cesaroni R. 2006, A &A, 453, 911
Girart J. M., Estalella R., Viti S., Williams D. A., Ho P. T. P. 2001, ApJ, 562, L91
Harris D. E., Krawczynski H. 2006, ARA &A, 44, 463
Heathcote S., Reipurth B., Raga A. C. 1998, ApJ, 116, 1940
Hogerheijde M. R., van Dishoeck E. F., Salverda J. M., Blake G. A. 1999, ApJ, 513, 350
Hunter T. R., Churchwell E., Watson C., et al. 2000, ApJ, 119, 2711
Jhan K.-S., Lee C.-F. 2016, ApJ, 816, 32
Koenigl A. 1986, Ann. N. Y. Acad. Sci., 470, 88
Lee C.-F., Ho P. T. P., Hirano N., et al. 2007, ApJ, 659, 499
Lee C.-F., Sahai R. 2004, ApJ, 606, 483
Li Z.-Y., Nakamura F. 2006, ApJ, 640, L187
Livio M. 1997, Astronomical Society of the Pacific Conference Series, Vol. 121, The Formation Of Astrophysical Jets, eds Wickramasinghe D. T., Bicknell G. V., Ferrario L., p. 845
Livio M. 2000, in American Institute of Physics Conference Series, Vol. 522, eds Holt S. S., Zhang W. W., p. 275
Lovelace R. V. E., Wang J. C. L., Sulkanen M. E. 1987, ApJ, 315, 504
Marti J., Rodríguez L. F., Reipurth B. 1993, ApJ, 4162, 08
Marti J., Rodríguez L. F., Reipurth B. 1995, ApJ, 449, 184
Masqué J. M., Girart J. M., Estalella R., Rodríguez L. F., Beltrán M. T. 2012, ApJ, 758, L10
Meier D. L., Koide S., Uchida Y. 2001, Science, 291, 84
Mirabel I. F., Rodríguez L. F. 1999, Annu. Rev. Astron. Astrophys., 37, 409
Mohan S., Vig S., Mandal S. 2022, MNRAS, 514, 3709
Nakamura F., Li Z.-Y. 2007, ApJ, 662, 395
Padovani M., Marcowith A., Hennebelle P., Ferrière K. 2016, A &A, 590, A8
Palau A., Zapata L. A., Rodrãguez L. F., et al. 2014, MNRAS, 444, 833
Price D. J., Pringle J. E., King A. R. 2003, MNRAS, 339, 1223
Pudritz R. E., Norman C. A. 1983, ApJ, 274, 677
Qiu K., Wyrowski F., Menten K., Zhang Q., Güsten R. 2019, ApJ, 871, 141
Reipurth B., Rodrguez L. F., Anglada G., Bally J. 2004, Astron. J., 127, 1736
Reynolds S. P. 1982, ApJ, 256, 13
Reynolds S. P. 1986, ApJ, 304, 713
Rodríguez L. F., Curiel S., Moran J. M., et al. 1989, ApJ, 346, L85
Rodríguez L. F., Reipurth B. 1989, Revista Mexicana de Astronomia y Astrofisica, 17, 59
Rodríguez-Kamenetzky A., Carrasco-González C., Araudo A., et al. 2017, ApJ, 851, 16
Rybicki G. B., Lightman A. P. 2008, Radiative processes in astrophysics (Wiley)
Sari R., Piran T., Narayan R. 1998, ApJ, 497, L17
Shimajiri Y., Takahashi S., Takakuwa S., Saito M., Kawabe R. 2008, ApJ, 683, 255
Ustyugova G. V., Koldoba A. V., Romanova M. M., Chechetkin V. M., Lovelace R. V. E. 1995, ApJ, 439, L39
van der Tak F. F. S., van Dishoeck E. F., Evans II N. J., Bakker E. J., Blake G. A. 1999, ApJ, 522, 991
Vig S., Veena V. S., Mandal S., Tej A., Ghosh S. K. 2018, MNRAS, 474, 3808
Whelan E. M., Ray T., Bacciotti F., Randich S., Natta A. 2009, Astrophys. Space Sci. Proc., 13, 259
Wijers R. A. M. J., Galama T. J. 1999, ApJ, 523, 177
Zanni C., Ferrari A., Massaglia S., Bodo G., Rossi P. 2004, Astrophys. Space Sci., 293, 99
Acknowledgements
We thank Carrasco-Gonzalez and Adriana Rodriguez-Kamenetzky for kindly sharing the VLA radio data of HH80-81 jet.
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This article is part of the Special Issue on “Star formation studies in the context of NIR instruments on 3.6m DOT”.
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Mohan, S., Vig, S. & Mandal, S. Modeling of thermal and non-thermal radio emission from HH80-81 jet. J Astrophys Astron 44, 57 (2023). https://doi.org/10.1007/s12036-023-09947-7
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DOI: https://doi.org/10.1007/s12036-023-09947-7