A mildly relativistic radio jet from the otherwise normal type Ic supernova 2007gr

Paragi, Z.; Taylor, G. B.; Kouveliotou, C.; Granot, Jonathan; Ramírez-Ruiz, E.; Bietenholz, M. F.; Horst, A. J. van der; Pidopryhora, Yurii; Langevelde, H. J. van; Garrett, M. A.; Szomoru, Arpad; Argo, M. K.; Bourke, S.; Paczyński, B.

doi:10.1038/nature08713

Cited by 53 publications

(62 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…SN 2007gr is an important Type Ic SN, principally because of the proximity of its host galaxy which resulted in a detailed photometric and spectroscopic monitoring campaign (Valenti et al 2008;Hunter et al 2009). Studies by Paragi et al (2010) and Xu et al (2011) reported that SN 2007gr also hosted a relativistic outflow, that might imply SN 2007gr had a connection with the Gamma Ray Burst phenomenon. Using further X-ray and radio observations of SN 2007gr, Soderberg et al (2010) robustly disagree with the previous conclusions and find SN 2007gr to only be expanding at trans-relativistic (≈ 0.2c) velocities.…”

Section: Discussionmentioning

confidence: 99%

A high mass progenitor for the Type Ic Supernova 2007gr inferred from its environment

Maund¹,

Ramírez-Ruiz²

2016

Mon. Not. R. Astron. Soc.

View full text Add to dashboard Cite

We present an analysis of late-time Hubble Space Telescope Wide Field Camera 3 and Wide Field Planetary Camera 2 observations of the site of the Type Ic SN 2007gr in NGC 1058. The SN is barely recovered in the late-time WFPC2 observations, while a possible detection in the later WFC3 data is debatable. These observations were used to conduct a multiwavelength study of the surrounding stellar population. We fit spatial profiles to a nearby bright source that was previously proposed to be a host cluster. We find that, rather than being an extended cluster, it is consistent with a single point-like object. Fitting stellar models to the observed spectral energy distribution of this source, we conclude it is A1-A3 Yellow Supergiant, possibly corresponding to a star with M ZAM S = 40M . SN 2007gr is situated in a massive star association, with diameter of ≈ 300 pc. We present a Bayesian scheme to determine the properties of the surrounding massive star population, in conjunction with the Padova isochrones. We find that the stellar population, as observed in either the WFC3 and WFPC2 observations, can be well fit by two age distributions with mean ages: ∼ 6.3 Myr and ∼ 50 Myr. The stellar population is clearly dominated by the younger age solution (by factors of 3.5 and 5.7 from the WFPC2 and WFC3 observations, respectively), which corresponds to the lifetime of a star with M ZAM S ∼ 30M . This is strong evidence in favour of the hypothesis that SN 2007gr arose from a massive progenitor star, possibly capable of becoming a Wolf-Rayet star.

show abstract

Section: Discussionmentioning

confidence: 99%

A high mass progenitor for the Type Ic Supernova 2007gr inferred from its environment

Maund¹,

Ramírez-Ruiz²

2016

Mon. Not. R. Astron. Soc.

View full text Add to dashboard Cite

show abstract

“…We note that the radio and optical surveys have recently discovered a relativistic Type Ibc SN 2009bb without a detected γ -ray burst and a relativistic jet from a normal Type Ic SN 2007gr (Soderberg et al 2010;Paragi et al 2010). The radio and optical surveys are crucial to capturing these sources.…”

Section: Resultsmentioning

confidence: 99%

MODELING PHOTODISINTEGRATION-INDUCED TeV PHOTON EMISSION FROM LOW-LUMINOSITY GAMMA-RAY BURSTS

Liu

2012

The Astronomical Journal

View full text Add to dashboard Cite

Ultra-high-energy cosmic-ray heavy nuclei have recently been considered as originating from nearby low-luminosity gamma-ray bursts that are associated with Type Ibc supernovae. Unlike the power-law decay in long duration gamma-ray bursts, the light curve of these bursts exhibits complex UV/optical behavior: shock breakout dominated thermal radiation peaks at about 1 day, and, after that, nearly constant emission sustained by radioactive materials for tens of days. We show that the highly boosted heavy nuclei at PeV energy interacting with the UV/optical photon field will produce considerable TeV photons via the photodisintegration/photo-de-excitation process. It was later predicted that a thermal-like γ -ray spectrum peaks at about a few TeV, which may serve as evidence of nucleus acceleration. The future observations by the space telescope Fermi and by the ground atmospheric Cherenkov telescopes such as H.E.S.S., VERITAS, and MAGIC will shed light on this prediction.

show abstract

“…While no coincident GRB was detected, it is not clear whether it is because there was a weak GRB that went undetected or the GRB was offaxis or there were no gamma-rays produced during the SN. While also SN Ic 2007gr was claimed to indicate an enginedriven explosion without an observed GRB (Paragi et al 2010), its radio light curves and X-ray data indicate that it may well be an ordinary SN Ib/c explosion (Soderberg et al 2010a). …”

Section: Search For Off-axis Grbsmentioning

confidence: 99%

Stellar Forensics with the Supernova‐GRB Connection

Modjaz¹

2011

Reviews in Modern Astronomy

View full text Add to dashboard Cite

Long-duration gamma-ray bursts (GRBs) and Type Ib/c Supernovae (SNe Ib/c) are amongst nature's most magnificent explosions. While GRBs launch relativistic jets, SNe Ib/c are core-collapse explosions whose progenitors have been stripped of their hydrogen and helium envelopes. Yet for over a decade, one of the key outstanding questions is which conditions lead to each kind of explosion and death in massive stars. Determining the fates of massive stars is not only a vibrant topic in itself, but also impacts using GRBs as star formation indicators over distances of up to 13 billion light-years and for mapping the chemical enrichment history of the universe. This article reviews a number of comprehensive observational studies that probe the progenitor environments, their metallicities and the explosion geometries of SN with and without GRBs, as well as the emerging field of SN environmental studies. Furthermore, it discusses SN 2008D/XRT 080109 which was discovered serendipitously with the Swift satellite via its X-ray emission from shock breakout, and which has generated great interest amongst both observers and theorists while illustrating a novel technique for stellar forensics. The article concludes with an outlook on how the most promising venues of research -with the many existing and upcoming large-scale surveys such as the Palomar Transient Factory and LSST -will shed new light on the diverse deaths of massive stars.

show abstract

A mildly relativistic radio jet from the otherwise normal type Ic supernova 2007gr

Cited by 53 publications

References 15 publications

A high mass progenitor for the Type Ic Supernova 2007gr inferred from its environment

A high mass progenitor for the Type Ic Supernova 2007gr inferred from its environment

MODELING PHOTODISINTEGRATION-INDUCED TeV PHOTON EMISSION FROM LOW-LUMINOSITY GAMMA-RAY BURSTS

Stellar Forensics with the Supernova‐GRB Connection

Contact Info

Product

Resources

About