Radio emission from interstellar shocks : young type Ia supernova remnants and the case of N 103B in the Large Magellanic Cloud

R. Z. E. Alsaberi; L. A. Barnes; M. D. Filipović; N. I. Maxted; H. Sano; G. Rowell; L. M. Bozzetto; S. Gurovich; D. Urošević; D. Onić; B. -Q. For; P. Manojlović; G. Wong; T. J. Galvin; P. Kavanagh; N. O. Ralph; E. J. Crawford; M. Sasaki; F. Haberl; P. Maggi; N. F. H. Tothill; Y. Fukui

doi:10.1007/s10509-019-3696-8

Radio emission from interstellar shocks : young type Ia supernova remnants and the case of N 103B in the Large Magellanic Cloud

R. Z. E. Alsaberi, L. A. Barnes, M. D. Filipović, N. I. Maxted, H. Sano, G. Rowell, L. M. Bozzetto, S. Gurovich, D. Urošević, D. Onić, B. -Q. For, P. Manojlović, G. Wong, T. J. Galvin, P. Kavanagh, N. O. Ralph, E. J. Crawford, M. Sasaki, F. Haberl, P. MaggiN. F. H. Tothill, Y. Fukui

Western Sydney University

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Abstract

We investigate young type Ia supernova remnants (SNRs) in our Galaxy and neighbouring galaxies in order to understand their properties and early stage of their evolution. Here we present a radio continuum study based on new and archival data from the Australia Telescope Compact Array (ATCA) towards N 103B, a young (≤1000 yrs) spectroscopically confirmed type Ia SNR in the Large Magellanic Cloud (LMC) and proposed to have originated from a single degenerate (SD) progenitor. The radio morphology of this SNR is asymmetrical with two bright regions towards the north-west and south-west of the central location as defined by radio emission. N 103B identified features include: a radio spectral index of − 0.75 ÃÂ± 0.01 (consistent with other young type Ia SNRs in the Galaxy); a bulk SNR expansion rate as in X-rays; morphology and polarised electrical field vector measurements where we note radial polarisation peak towards the north-west of the remnant at both 5500 and 9000ÃÂ MHz. The spectrum is concave-up and the most likely reason is the non-linear diffusive shock acceleration (NLDSA) effects or presence of two different populations of ultra-relativistic electrons. We also note unpolarised clumps near the south-west region which is in agreement with this above scenario. We derive a typical magnetic field strength for N 103B of 16.4ÃÂ μG for an average rotation measurement of 200radm−2. However, we estimate the equipartition field to be of the order of ∼235ÃÂ μG with an estimated minimum energy of Emin=6.3ÃÂ1048erg. The close (∼ 0.5 ∘) proximity of N 103B to the LMC mid-plane indicates that an early encounter with dense interstellar medium may have set an important constrain on SNR evolution. Finally, we compare features of N 103B to six other young type Ia SNRs in the LMC and Galaxy, with a range of proposed degeneracy scenarios to highlight potential differences due to a different models. We suggest that the single degenerate scenario might point to morphologically asymmetric type Ia supernova explosions.

Original language	English
Article number	204
Number of pages	16
Journal	Astrophysics and Space Science
Volume	364
Issue number	11
DOIs	https://doi.org/10.1007/s10509-019-3696-8
Publication status	Published - 2019

Keywords

Magellanic Clouds
cosmic rays
radio continuum
supernova remnants
supernovae

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Alsaberi, R. Z. E., Barnes, L. A., Filipović, M. D., Maxted, N. I., Sano, H., Rowell, G., Bozzetto, L. M., Gurovich, S., Urošević, D., Onić, D., For, B. .-Q., Manojlović, P., Wong, G., Galvin, T. J., Kavanagh, P., Ralph, N. O., Crawford, E. J., Sasaki, M., Haberl, F., ... Fukui, Y. (2019). Radio emission from interstellar shocks : young type Ia supernova remnants and the case of N 103B in the Large Magellanic Cloud. Astrophysics and Space Science, 364(11), Article 204. https://doi.org/10.1007/s10509-019-3696-8

@article{42c0e632a72d4c2aa936a06275fa287f,

title = "Radio emission from interstellar shocks : young type Ia supernova remnants and the case of N 103B in the Large Magellanic Cloud",

abstract = "We investigate young type Ia supernova remnants (SNRs) in our Galaxy and neighbouring galaxies in order to understand their properties and early stage of their evolution. Here we present a radio continuum study based on new and archival data from the Australia Telescope Compact Array (ATCA) towards N 103B, a young (≤1000 yrs) spectroscopically confirmed type Ia SNR in the Large Magellanic Cloud (LMC) and proposed to have originated from a single degenerate (SD) progenitor. The radio morphology of this SNR is asymmetrical with two bright regions towards the north-west and south-west of the central location as defined by radio emission. N 103B identified features include: a radio spectral index of − 0.75 {\~A}{\^A}± 0.01 (consistent with other young type Ia SNRs in the Galaxy); a bulk SNR expansion rate as in X-rays; morphology and polarised electrical field vector measurements where we note radial polarisation peak towards the north-west of the remnant at both 5500 and 9000{\~A}{\^A} MHz. The spectrum is concave-up and the most likely reason is the non-linear diffusive shock acceleration (NLDSA) effects or presence of two different populations of ultra-relativistic electrons. We also note unpolarised clumps near the south-west region which is in agreement with this above scenario. We derive a typical magnetic field strength for N 103B of 16.4{\~A}{\^A} μG for an average rotation measurement of 200radm−2. However, we estimate the equipartition field to be of the order of ∼235{\~A}{\^A} μG with an estimated minimum energy of Emin=6.3{\~A}{\^A}1048erg. The close (∼ 0.5 ∘) proximity of N 103B to the LMC mid-plane indicates that an early encounter with dense interstellar medium may have set an important constrain on SNR evolution. Finally, we compare features of N 103B to six other young type Ia SNRs in the LMC and Galaxy, with a range of proposed degeneracy scenarios to highlight potential differences due to a different models. We suggest that the single degenerate scenario might point to morphologically asymmetric type Ia supernova explosions.",

keywords = "Magellanic Clouds, cosmic rays, radio continuum, supernova remnants, supernovae",

author = "Alsaberi, {R. Z. E.} and Barnes, {L. A.} and Filipovi{\'c}, {M. D.} and Maxted, {N. I.} and H. Sano and G. Rowell and Bozzetto, {L. M.} and S. Gurovich and D. Uro{\v s}evi{\'c} and D. Oni{\'c} and For, {B. -Q.} and P. Manojlovi{\'c} and G. Wong and Galvin, {T. J.} and P. Kavanagh and Ralph, {N. O.} and Crawford, {E. J.} and M. Sasaki and F. Haberl and P. Maggi and Tothill, {N. F. H.} and Y. Fukui",

year = "2019",

doi = "10.1007/s10509-019-3696-8",

language = "English",

volume = "364",

journal = "Astrophysics and Space Science",

issn = "0004-640X",

publisher = "Springer",

number = "11",

}

Alsaberi, RZE, Barnes, LA , Filipović, MD, Maxted, NI, Sano, H, Rowell, G, Bozzetto, LM, Gurovich, S, Urošević, D, Onić, D, For, B-Q, Manojlović, P, Wong, G, Galvin, TJ, Kavanagh, P, Ralph, NO , Crawford, EJ, Sasaki, M, Haberl, F, Maggi, P, Tothill, NFH & Fukui, Y 2019, 'Radio emission from interstellar shocks : young type Ia supernova remnants and the case of N 103B in the Large Magellanic Cloud', Astrophysics and Space Science, vol. 364, no. 11, 204. https://doi.org/10.1007/s10509-019-3696-8

TY - JOUR

T1 - Radio emission from interstellar shocks : young type Ia supernova remnants and the case of N 103B in the Large Magellanic Cloud

AU - Alsaberi, R. Z. E.

AU - Barnes, L. A.

AU - Filipović, M. D.

AU - Maxted, N. I.

AU - Sano, H.

AU - Rowell, G.

AU - Bozzetto, L. M.

AU - Gurovich, S.

AU - Urošević, D.

AU - Onić, D.

AU - For, B. -Q.

AU - Manojlović, P.

AU - Wong, G.

AU - Galvin, T. J.

AU - Kavanagh, P.

AU - Ralph, N. O.

AU - Crawford, E. J.

AU - Sasaki, M.

AU - Haberl, F.

AU - Maggi, P.

AU - Tothill, N. F. H.

AU - Fukui, Y.

PY - 2019

Y1 - 2019

N2 - We investigate young type Ia supernova remnants (SNRs) in our Galaxy and neighbouring galaxies in order to understand their properties and early stage of their evolution. Here we present a radio continuum study based on new and archival data from the Australia Telescope Compact Array (ATCA) towards N 103B, a young (≤1000 yrs) spectroscopically confirmed type Ia SNR in the Large Magellanic Cloud (LMC) and proposed to have originated from a single degenerate (SD) progenitor. The radio morphology of this SNR is asymmetrical with two bright regions towards the north-west and south-west of the central location as defined by radio emission. N 103B identified features include: a radio spectral index of − 0.75 ÃÂ± 0.01 (consistent with other young type Ia SNRs in the Galaxy); a bulk SNR expansion rate as in X-rays; morphology and polarised electrical field vector measurements where we note radial polarisation peak towards the north-west of the remnant at both 5500 and 9000ÃÂ MHz. The spectrum is concave-up and the most likely reason is the non-linear diffusive shock acceleration (NLDSA) effects or presence of two different populations of ultra-relativistic electrons. We also note unpolarised clumps near the south-west region which is in agreement with this above scenario. We derive a typical magnetic field strength for N 103B of 16.4ÃÂ μG for an average rotation measurement of 200radm−2. However, we estimate the equipartition field to be of the order of ∼235ÃÂ μG with an estimated minimum energy of Emin=6.3ÃÂ1048erg. The close (∼ 0.5 ∘) proximity of N 103B to the LMC mid-plane indicates that an early encounter with dense interstellar medium may have set an important constrain on SNR evolution. Finally, we compare features of N 103B to six other young type Ia SNRs in the LMC and Galaxy, with a range of proposed degeneracy scenarios to highlight potential differences due to a different models. We suggest that the single degenerate scenario might point to morphologically asymmetric type Ia supernova explosions.

AB - We investigate young type Ia supernova remnants (SNRs) in our Galaxy and neighbouring galaxies in order to understand their properties and early stage of their evolution. Here we present a radio continuum study based on new and archival data from the Australia Telescope Compact Array (ATCA) towards N 103B, a young (≤1000 yrs) spectroscopically confirmed type Ia SNR in the Large Magellanic Cloud (LMC) and proposed to have originated from a single degenerate (SD) progenitor. The radio morphology of this SNR is asymmetrical with two bright regions towards the north-west and south-west of the central location as defined by radio emission. N 103B identified features include: a radio spectral index of − 0.75 ÃÂ± 0.01 (consistent with other young type Ia SNRs in the Galaxy); a bulk SNR expansion rate as in X-rays; morphology and polarised electrical field vector measurements where we note radial polarisation peak towards the north-west of the remnant at both 5500 and 9000ÃÂ MHz. The spectrum is concave-up and the most likely reason is the non-linear diffusive shock acceleration (NLDSA) effects or presence of two different populations of ultra-relativistic electrons. We also note unpolarised clumps near the south-west region which is in agreement with this above scenario. We derive a typical magnetic field strength for N 103B of 16.4ÃÂ μG for an average rotation measurement of 200radm−2. However, we estimate the equipartition field to be of the order of ∼235ÃÂ μG with an estimated minimum energy of Emin=6.3ÃÂ1048erg. The close (∼ 0.5 ∘) proximity of N 103B to the LMC mid-plane indicates that an early encounter with dense interstellar medium may have set an important constrain on SNR evolution. Finally, we compare features of N 103B to six other young type Ia SNRs in the LMC and Galaxy, with a range of proposed degeneracy scenarios to highlight potential differences due to a different models. We suggest that the single degenerate scenario might point to morphologically asymmetric type Ia supernova explosions.

KW - Magellanic Clouds

KW - cosmic rays

KW - radio continuum

KW - supernova remnants

KW - supernovae

UR - https://hdl.handle.net/1959.7/uws:54899

U2 - 10.1007/s10509-019-3696-8

DO - 10.1007/s10509-019-3696-8

M3 - Article

SN - 0004-640X

VL - 364

JO - Astrophysics and Space Science

JF - Astrophysics and Space Science

IS - 11

M1 - 204

ER -

Radio emission from interstellar shocks : young type Ia supernova remnants and the case of N 103B in the Large Magellanic Cloud

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