Skip to content
Back to outputs

A mildly relativistic outflow from the energetic, fast-rising blue optical transient CSS161010 in a dwarf galaxy

Research output: Contribution to journalArticlepeer-review

Standard

A mildly relativistic outflow from the energetic, fast-rising blue optical transient CSS161010 in a dwarf galaxy. / Coppejans, D. L.; Margutti, R.; Terreran, G.; Nayana, A. J.; Coughlin, E. R.; Laskar, T.; Alexander, K. D.; Bietenholz, M.; Caprioli, D.; Chandra, P.; Drout, M.; Frederiks, D.; Frohmaier, C.; Hurley, K.; Kochanek, C. S.; MacLeod, M.; Meisner, A.; Nugent, P. E.; Ridnaia, A.; Sand, D. J.; Svinkin, D.; Ward, C.; Yang, S.; Baldeschi, A.; Chilingarian, I. V.; Dong, Y.; Esquivia, C.; Fong, W.; Guidorzi, C.; Lundqvist, P.; Milisavljevic, D.; Paterson, K.; Reichart, D. E.; Shappee, B.; Stroh, M. C.; Valenti, S.; Zauderer, A.; Zhang, B.

In: Astrophysical Journal Letters, Vol. 895, No. 1, L23, 26.05.2020.

Research output: Contribution to journalArticlepeer-review

Harvard

Coppejans, DL, Margutti, R, Terreran, G, Nayana, AJ, Coughlin, ER, Laskar, T, Alexander, KD, Bietenholz, M, Caprioli, D, Chandra, P, Drout, M, Frederiks, D, Frohmaier, C, Hurley, K, Kochanek, CS, MacLeod, M, Meisner, A, Nugent, PE, Ridnaia, A, Sand, DJ, Svinkin, D, Ward, C, Yang, S, Baldeschi, A, Chilingarian, IV, Dong, Y, Esquivia, C, Fong, W, Guidorzi, C, Lundqvist, P, Milisavljevic, D, Paterson, K, Reichart, DE, Shappee, B, Stroh, MC, Valenti, S, Zauderer, A & Zhang, B 2020, 'A mildly relativistic outflow from the energetic, fast-rising blue optical transient CSS161010 in a dwarf galaxy', Astrophysical Journal Letters, vol. 895, no. 1, L23. https://doi.org/10.3847/2041-8213/ab8cc7

APA

Coppejans, D. L., Margutti, R., Terreran, G., Nayana, A. J., Coughlin, E. R., Laskar, T., Alexander, K. D., Bietenholz, M., Caprioli, D., Chandra, P., Drout, M., Frederiks, D., Frohmaier, C., Hurley, K., Kochanek, C. S., MacLeod, M., Meisner, A., Nugent, P. E., Ridnaia, A., ... Zhang, B. (2020). A mildly relativistic outflow from the energetic, fast-rising blue optical transient CSS161010 in a dwarf galaxy. Astrophysical Journal Letters, 895(1), [L23]. https://doi.org/10.3847/2041-8213/ab8cc7

Vancouver

Coppejans DL, Margutti R, Terreran G, Nayana AJ, Coughlin ER, Laskar T et al. A mildly relativistic outflow from the energetic, fast-rising blue optical transient CSS161010 in a dwarf galaxy. Astrophysical Journal Letters. 2020 May 26;895(1). L23. https://doi.org/10.3847/2041-8213/ab8cc7

Author

Coppejans, D. L. ; Margutti, R. ; Terreran, G. ; Nayana, A. J. ; Coughlin, E. R. ; Laskar, T. ; Alexander, K. D. ; Bietenholz, M. ; Caprioli, D. ; Chandra, P. ; Drout, M. ; Frederiks, D. ; Frohmaier, C. ; Hurley, K. ; Kochanek, C. S. ; MacLeod, M. ; Meisner, A. ; Nugent, P. E. ; Ridnaia, A. ; Sand, D. J. ; Svinkin, D. ; Ward, C. ; Yang, S. ; Baldeschi, A. ; Chilingarian, I. V. ; Dong, Y. ; Esquivia, C. ; Fong, W. ; Guidorzi, C. ; Lundqvist, P. ; Milisavljevic, D. ; Paterson, K. ; Reichart, D. E. ; Shappee, B. ; Stroh, M. C. ; Valenti, S. ; Zauderer, A. ; Zhang, B. / A mildly relativistic outflow from the energetic, fast-rising blue optical transient CSS161010 in a dwarf galaxy. In: Astrophysical Journal Letters. 2020 ; Vol. 895, No. 1.

Bibtex

@article{2bfff8249185455ebd93dad8f1aa9efa,
title = "A mildly relativistic outflow from the energetic, fast-rising blue optical transient CSS161010 in a dwarf galaxy",
abstract = "We present X-ray and radio observations of the Fast Blue Optical Transient CRTS-CSS161010 J045834−081803 (CSS161010 hereafter) at t = 69–531 days. CSS161010 shows luminous X-ray (L x ~ 5 × 1039 erg s−1) and radio (L ν ~ 1029 erg s−1 Hz−1) emission. The radio emission peaked at ~100 days post-transient explosion and rapidly decayed. We interpret these observations in the context of synchrotron emission from an expanding blast wave. CSS161010 launched a mildly relativistic outflow with velocity Γβc ≥ 0.55c at ~100 days. This is faster than the non-relativistic AT 2018cow (Γβc ~ 0.1c) and closer to ZTF18abvkwla (Γβc ≥ 0.3c at 63 days). The inferred initial kinetic energy of CSS161010 (E k ≿ 1051 erg) is comparable to that of long gamma-ray bursts, but the ejecta mass that is coupled to the mildly relativistic outflow is significantly larger (∼0.01-0.1 M⊙). This is consistent with the lack of observed γ-rays. The luminous X-rays were produced by a different emission component to the synchrotron radio emission. CSS161010 is located at ~150 Mpc in a dwarf galaxy with stellar mass M * ~ 107 M⊙ and specific star formation rate sSFR ~ 0.3 Gyr−1. This mass is among the lowest inferred for host galaxies of explosive transients from massive stars. Our observations of CSS161010 are consistent with an engine-driven aspherical explosion from a rare evolutionary path of a H-rich stellar progenitor, but we cannot rule out a stellar tidal disruption event on a centrally located intermediate-mass black hole. Regardless of the physical mechanism, CSS161010 establishes the existence of a new class of rare (rate < 0.4% of the local core-collapse supernova rate) H-rich transients that can launch mildly relativistic outflows.",
keywords = "astro-ph.HE",
author = "Coppejans, {D. L.} and R. Margutti and G. Terreran and Nayana, {A. J.} and Coughlin, {E. R.} and T. Laskar and Alexander, {K. D.} and M. Bietenholz and D. Caprioli and P. Chandra and M. Drout and D. Frederiks and C. Frohmaier and K. Hurley and Kochanek, {C. S.} and M. MacLeod and A. Meisner and Nugent, {P. E.} and A. Ridnaia and Sand, {D. J.} and D. Svinkin and C. Ward and S. Yang and A. Baldeschi and Chilingarian, {I. V.} and Y. Dong and C. Esquivia and W. Fong and C. Guidorzi and P. Lundqvist and D. Milisavljevic and K. Paterson and Reichart, {D. E.} and B. Shappee and Stroh, {M. C.} and S. Valenti and A. Zauderer and B. Zhang",
note = "Published in ApJL",
year = "2020",
month = may,
day = "26",
doi = "10.3847/2041-8213/ab8cc7",
language = "English",
volume = "895",
journal = "Astrophysical Journal Letters",
issn = "2041-8205",
publisher = "IOP Publishing",
number = "1",

}

RIS

TY - JOUR

T1 - A mildly relativistic outflow from the energetic, fast-rising blue optical transient CSS161010 in a dwarf galaxy

AU - Coppejans, D. L.

AU - Margutti, R.

AU - Terreran, G.

AU - Nayana, A. J.

AU - Coughlin, E. R.

AU - Laskar, T.

AU - Alexander, K. D.

AU - Bietenholz, M.

AU - Caprioli, D.

AU - Chandra, P.

AU - Drout, M.

AU - Frederiks, D.

AU - Frohmaier, C.

AU - Hurley, K.

AU - Kochanek, C. S.

AU - MacLeod, M.

AU - Meisner, A.

AU - Nugent, P. E.

AU - Ridnaia, A.

AU - Sand, D. J.

AU - Svinkin, D.

AU - Ward, C.

AU - Yang, S.

AU - Baldeschi, A.

AU - Chilingarian, I. V.

AU - Dong, Y.

AU - Esquivia, C.

AU - Fong, W.

AU - Guidorzi, C.

AU - Lundqvist, P.

AU - Milisavljevic, D.

AU - Paterson, K.

AU - Reichart, D. E.

AU - Shappee, B.

AU - Stroh, M. C.

AU - Valenti, S.

AU - Zauderer, A.

AU - Zhang, B.

N1 - Published in ApJL

PY - 2020/5/26

Y1 - 2020/5/26

N2 - We present X-ray and radio observations of the Fast Blue Optical Transient CRTS-CSS161010 J045834−081803 (CSS161010 hereafter) at t = 69–531 days. CSS161010 shows luminous X-ray (L x ~ 5 × 1039 erg s−1) and radio (L ν ~ 1029 erg s−1 Hz−1) emission. The radio emission peaked at ~100 days post-transient explosion and rapidly decayed. We interpret these observations in the context of synchrotron emission from an expanding blast wave. CSS161010 launched a mildly relativistic outflow with velocity Γβc ≥ 0.55c at ~100 days. This is faster than the non-relativistic AT 2018cow (Γβc ~ 0.1c) and closer to ZTF18abvkwla (Γβc ≥ 0.3c at 63 days). The inferred initial kinetic energy of CSS161010 (E k ≿ 1051 erg) is comparable to that of long gamma-ray bursts, but the ejecta mass that is coupled to the mildly relativistic outflow is significantly larger (∼0.01-0.1 M⊙). This is consistent with the lack of observed γ-rays. The luminous X-rays were produced by a different emission component to the synchrotron radio emission. CSS161010 is located at ~150 Mpc in a dwarf galaxy with stellar mass M * ~ 107 M⊙ and specific star formation rate sSFR ~ 0.3 Gyr−1. This mass is among the lowest inferred for host galaxies of explosive transients from massive stars. Our observations of CSS161010 are consistent with an engine-driven aspherical explosion from a rare evolutionary path of a H-rich stellar progenitor, but we cannot rule out a stellar tidal disruption event on a centrally located intermediate-mass black hole. Regardless of the physical mechanism, CSS161010 establishes the existence of a new class of rare (rate < 0.4% of the local core-collapse supernova rate) H-rich transients that can launch mildly relativistic outflows.

AB - We present X-ray and radio observations of the Fast Blue Optical Transient CRTS-CSS161010 J045834−081803 (CSS161010 hereafter) at t = 69–531 days. CSS161010 shows luminous X-ray (L x ~ 5 × 1039 erg s−1) and radio (L ν ~ 1029 erg s−1 Hz−1) emission. The radio emission peaked at ~100 days post-transient explosion and rapidly decayed. We interpret these observations in the context of synchrotron emission from an expanding blast wave. CSS161010 launched a mildly relativistic outflow with velocity Γβc ≥ 0.55c at ~100 days. This is faster than the non-relativistic AT 2018cow (Γβc ~ 0.1c) and closer to ZTF18abvkwla (Γβc ≥ 0.3c at 63 days). The inferred initial kinetic energy of CSS161010 (E k ≿ 1051 erg) is comparable to that of long gamma-ray bursts, but the ejecta mass that is coupled to the mildly relativistic outflow is significantly larger (∼0.01-0.1 M⊙). This is consistent with the lack of observed γ-rays. The luminous X-rays were produced by a different emission component to the synchrotron radio emission. CSS161010 is located at ~150 Mpc in a dwarf galaxy with stellar mass M * ~ 107 M⊙ and specific star formation rate sSFR ~ 0.3 Gyr−1. This mass is among the lowest inferred for host galaxies of explosive transients from massive stars. Our observations of CSS161010 are consistent with an engine-driven aspherical explosion from a rare evolutionary path of a H-rich stellar progenitor, but we cannot rule out a stellar tidal disruption event on a centrally located intermediate-mass black hole. Regardless of the physical mechanism, CSS161010 establishes the existence of a new class of rare (rate < 0.4% of the local core-collapse supernova rate) H-rich transients that can launch mildly relativistic outflows.

KW - astro-ph.HE

U2 - 10.3847/2041-8213/ab8cc7

DO - 10.3847/2041-8213/ab8cc7

M3 - Article

VL - 895

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

SN - 2041-8205

IS - 1

M1 - L23

ER -

ID: 21054619