Is there a mildly relativistic jet in SN2007gr?

Z. Paragi; A. J. Van Der Horst; M. Tanaka; G. B. Taylor; C. Kouveliotou; Jonathan Granot; E. Ramirez-Ruiz; Y. Pidopryhora; S. Bourke; R. M. Campbell; M. A. Garrett; H. J. Van Langevelde

doi:10.1017/S1743921310016297

Is there a mildly relativistic jet in SN2007gr?

Z. Paragi, A. J. Van Der Horst, M. Tanaka, G. B. Taylor, C. Kouveliotou, Jonathan Granot, E. Ramirez-Ruiz, Y. Pidopryhora, S. Bourke, R. M. Campbell, M. A. Garrett, H. J. Van Langevelde

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

SN2007gr was an ordinary type Ic supernova, with a hint of asymmetric explosion seen in the optical polarization spectrum. This type of SNe is occasionally associated with long duration gamma-ray bursts which generate ultra-relativistic jets; no relativistic outflows have yet been found by direct imaging in SNe Ib/c explosions. High resolution very long baseline interferometry (VLBI) data and simultaneous total radio flux density measurements indicated that SN2007gr has expanded mildly relativistically. We performed late time Westerbork Synthesis Radio Telescope (WSRT) observations to measure the level of the underlying extended emission. Comparison of the VLBI and the background-subtracted WSRT and independent VLA data indicate an at least partially resolved source with an average expansion velocity of ≥0.4c, although the VLBI data could be consistent with a fainter source with an expansion velocity of ∼0.2c as well.

Original language	English
Title of host publication	Jets at All Scales
Subtitle of host publication	Proceedings IAU Symposium No. 275, 2011
Editors	Gustavo E. Romero, Rashid A. Sunyaev, Tomaso Belloni
Publisher	Cambridge University Press
Pages	319-320
Number of pages	2
Volume	275
Edition	S275
ISBN (Print)	9780521766074
DOIs	https://doi.org/10.1017/S1743921310016297 https://doi.org/10.1017/S1743921310016297
State	Published - 1 Feb 2011
Externally published	Yes

Publication series

Name	Proceedings of the International Astronomical Union
Number	S275
Volume	6
ISSN (Print)	1743-9213
ISSN (Electronic)	1743-9221

Keywords

ISM: jets and outflows
Radio continuum: general
Supernovae: general
Supernovae: individual (SN 2007gr)
Techniques: interferometric

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Cite this

Paragi, Z., Van Der Horst, A. J., Tanaka, M., Taylor, G. B., Kouveliotou, C., Granot, J., Ramirez-Ruiz, E., Pidopryhora, Y., Bourke, S., Campbell, R. M., Garrett, M. A., & Van Langevelde, H. J. (2011). Is there a mildly relativistic jet in SN2007gr? In G. E. Romero, R. A. Sunyaev, & T. Belloni (Eds.), Jets at All Scales: Proceedings IAU Symposium No. 275, 2011 (S275 ed., Vol. 275, pp. 319-320). (Proceedings of the International Astronomical Union; Vol. 6, No. S275). Cambridge University Press. https://doi.org/10.1017/S1743921310016297, https://doi.org/10.1017/S1743921310016297

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title = "Is there a mildly relativistic jet in SN2007gr?",

abstract = "SN2007gr was an ordinary type Ic supernova, with a hint of asymmetric explosion seen in the optical polarization spectrum. This type of SNe is occasionally associated with long duration gamma-ray bursts which generate ultra-relativistic jets; no relativistic outflows have yet been found by direct imaging in SNe Ib/c explosions. High resolution very long baseline interferometry (VLBI) data and simultaneous total radio flux density measurements indicated that SN2007gr has expanded mildly relativistically. We performed late time Westerbork Synthesis Radio Telescope (WSRT) observations to measure the level of the underlying extended emission. Comparison of the VLBI and the background-subtracted WSRT and independent VLA data indicate an at least partially resolved source with an average expansion velocity of ≥0.4c, although the VLBI data could be consistent with a fainter source with an expansion velocity of ∼0.2c as well.",

keywords = "ISM: jets and outflows, Radio continuum: general, Supernovae: general, Supernovae: individual (SN 2007gr), Techniques: interferometric",

author = "Z. Paragi and {Van Der Horst}, {A. J.} and M. Tanaka and Taylor, {G. B.} and C. Kouveliotou and Jonathan Granot and E. Ramirez-Ruiz and Y. Pidopryhora and S. Bourke and Campbell, {R. M.} and Garrett, {M. A.} and {Van Langevelde}, {H. J.}",

year = "2011",

month = feb,

day = "1",

doi = "10.1017/S1743921310016297",

language = "אנגלית",

isbn = "9780521766074",

volume = "275",

series = "Proceedings of the International Astronomical Union",

publisher = "Cambridge University Press",

number = "S275",

pages = "319--320",

editor = "Romero, {Gustavo E.} and Sunyaev, {Rashid A.} and Tomaso Belloni",

booktitle = "Jets at All Scales",

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edition = "S275",

}

Paragi, Z, Van Der Horst, AJ, Tanaka, M, Taylor, GB, Kouveliotou, C, Granot, J, Ramirez-Ruiz, E, Pidopryhora, Y, Bourke, S, Campbell, RM, Garrett, MA & Van Langevelde, HJ 2011, Is there a mildly relativistic jet in SN2007gr? in GE Romero, RA Sunyaev & T Belloni (eds), Jets at All Scales: Proceedings IAU Symposium No. 275, 2011. S275 edn, vol. 275, Proceedings of the International Astronomical Union, no. S275, vol. 6, Cambridge University Press, pp. 319-320. https://doi.org/10.1017/S1743921310016297, https://doi.org/10.1017/S1743921310016297

Is there a mildly relativistic jet in SN2007gr? / Paragi, Z.; Van Der Horst, A. J.; Tanaka, M. et al.
Jets at All Scales: Proceedings IAU Symposium No. 275, 2011. ed. / Gustavo E. Romero; Rashid A. Sunyaev; Tomaso Belloni. Vol. 275 S275. ed. Cambridge University Press, 2011. p. 319-320 (Proceedings of the International Astronomical Union; Vol. 6, No. S275).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review