Multi-Messenger Tests for Fast-Spinning Newborn Pulsars Embedded in Stripped-Envelope Supernovae

Kashiyama, Kazumi; Murase, Kohta; Bartos, I.; Kiuchi, Kenta; Margutti, R.

doi:10.3847/0004-637x/818/1/94

Cited by 76 publications

(106 citation statements)

References 104 publications

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“…Blue supergiants (BSGs) are possible UL GRB progenitors, and are believed to be common at very high redshifts [33,34]. Alternatively, such long durations may be explained by a fast-rotating pulsar, which could account for the connection between UL GRBs, super-luminous SNe and hypernovae [e.g., [35][36][37]. Although we do not consider poten-tial sources of UL GRBs in this work, these low-power GRBs can also contribute to neutrino emission [19].…”

Section: Introductionmentioning

confidence: 99%

Choked jets and low-luminosity gamma-ray bursts as hidden neutrino sources

2016

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We consider gamma-ray burst (GRB) jets that are choked by extended material as sources of high-energy cosmic neutrinos. We take into account the jet propagation physics both inside the progenitor star and the surrounding dense medium. Radiation constraints, which are relevant for high-energy neutrino production are considered as well. Efficient shock acceleration of cosmic rays is possible for sufficiently low-power jets and/or jets buried in a dense, extended wind or outer envelope. Such conditions also favor GRB jets to become stalled, and the necessary conditions for stalling are explicitly derived. Such choked jets may explain transrelativistic supernovae (SNe) and low-luminosity (LL) GRBs, giving a unified picture of GRBs and GRB-SNe. Focusing on this unified scenario for GRBs, we calculate the resulting neutrino spectra from choked jets including the relevant microphysical processes such as multipion production in pp and pγ interactions, as well as the energy losses of mesons and muons. We obtain diffuse neutrino spectra using the latest results for the luminosity function of LL GRBs. Although uncertainties are large, we confirm that LL GRBs can potentially give a significant contribution to the diffuse neutrino flux. Our results are consistent with the present IceCube data and do not violate the stacking limits on classical highluminosity GRBs. We find that high-energy neutrino production in choked jets is dominated by pγ interactions. These sources are dark in GeV-TeV gamma-rays, and do not contribute significantly to the Fermi diffuse gamma-ray background. Assuming stalled jets can launch a quasi-spherical shock in the dense medium, "precursor" TeV neutrinos emerging prior to the shock breakout gamma-ray emission can be used as smoking gun evidence for a choked jet model for LL GRBs. Our results strengthen the relevance of wide field-of-view sky monitors with better sensitivities in the 1−100 keV range.PACS numbers: 95.85. Ry, 97.60.Bw, 98.70.Rz

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Section: Introductionmentioning

confidence: 99%

Choked jets and low-luminosity gamma-ray bursts as hidden neutrino sources

2016

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“…However, it appears that the luminosity of many SLSNe cannot be adequately explained in this scenario, and alternative energy sources have been proposed. As a consequence, it is now usually assumed that at least a subclass of SLSNe, type Ic SLSNe, are powered by millisecond magnetars (Kasen & Bildsten 2010;Woosley 2010;Chatzopoulos et al 2012;Inserra et al 2013;Nicholl et al 2014;Metzger et al 2015;Mösta et al 2015;Wang et al 2015a;Dai et al 2016;Kashiyama et al 2016) although there is evidence for interaction between ejecta and circumstellar medium (Yan et al 2015;Wang et al 2016d;Chen et al 2017) at late times.…”

Section: Introductionmentioning

confidence: 99%

A Monte Carlo Approach to Magnetar-powered Transients. II. Broad-lined Type Ic Supernovae Not Associated with GRBs

Wang

Cano

Wang

et al. 2017

ApJ

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Broad-lined type Ic supernovae (SNe Ic-BL) are a subclass of rare core collapse SNe whose energy source is debated in the literature. Recently a series of investigations on SNe Ic-BL with the magnetar (plus 56 Ni) model were carried out. Evidence for magnetar formation was found for the well-observed SNe Ic-BL 1998bw and 2002ap. In this paper we systematically study a large sample of SNe Ic-BL not associated with gamma-ray bursts. We use photospheric velocity data determined in a homogeneous way. We find that the magnetar+ 56 Ni model provides a good description of the light curves and velocity evolution of our sample of SNe Ic-BL, although some SNe (not all) can also be described by the pure-magnetar model or by the two-component pure-56 Ni model (3 out of 12 are unlikely explained by two-component model). In the magnetar+ 56 Ni model, the amount of 56 Ni required to explain their luminosity is significantly reduced, and the derived initial explosion energy is, in general, in accordance with neutrino heating. Some correlations between different physical parameters are evaluated and their implications regarding magnetic field amplification and the total energy reservoir are discussed.

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“…A resulting criterion should be that the spin-down timescale by magnetic dipole radiation must be shorter than that by gravitational wave radiation (cf. Kashiyama et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Constraining the ellipticity of strongly magnetized neutron stars powering superluminous supernovae

Moriya

Tauris

2016

Monthly Notices of the Royal Astronomical Society: Letters

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Superluminous supernovae (SLSNe) have been suggested to be powered by strongly magnetized, rapidly rotating neutron stars which are often called magnetars. In this process, rotational energy of the magnetar is radiated via magnetic dipole radiation and heats the supernova ejecta. However, if magnetars are highly distorted in their geometric shape, rotational energy is mainly lost as gravitational wave radiation and thus such magnetars cannot power SLSNe. By simply comparing electromagnetic and gravitational wave emission timescales, we constrain upper limits to the ellipticity of magnetars by assuming that they power the observed SLSNe. We find that their ellipticity typically needs to be less than about a few 10 −3 . This indicates that the toroidal magnetic field strengths in these magnetars are typically less than a few 10 16 G so that their distortions remain small. Because light-curve modelling of SLSNe shows that their dipole magnetic field strengths are of the order of 10 14 G, the ratio of poloidal to toroidal magnetic field strengths is found to be larger than ∼ 0.01 in magnetars powering SLSNe.

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Multi-Messenger Tests for Fast-Spinning Newborn Pulsars Embedded in Stripped-Envelope Supernovae

Cited by 76 publications

References 104 publications

Choked jets and low-luminosity gamma-ray bursts as hidden neutrino sources

Choked jets and low-luminosity gamma-ray bursts as hidden neutrino sources

A Monte Carlo Approach to Magnetar-powered Transients. II. Broad-lined Type Ic Supernovae Not Associated with GRBs

Constraining the ellipticity of strongly magnetized neutron stars powering superluminous supernovae

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