The surprising Crab pulsar and its nebula: a review

Bühler, R.; Blandford, R. D.

doi:10.1088/0034-4885/77/6/066901

Cited by 252 publications

(225 citation statements)

References 171 publications

(273 reference statements)

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“…The emission from the oblique termination shock that has been also associated with the Crab's Inner Knot (Komissarov and Lyubarsky 2003;Yuan and Blandford 2015;see, however Melatos et al 2005 and references therein for alternative interpretations). On the other hand, some challenges to the MHD models still remain (Bühler and Blandford 2014). The predicted bright arc due to the emission from the relativistic post-shock flow originating from the termination shock (Komissarov and Lyubarsky 2003;Del Zanna et al 2006) is absent in the X-ray images where we instead see the patchy (likely consisting of multiple knots) inner ring which may or may not appear to be brighter on the northwestern side (depending on the observation epoch).…”

Section: Multiwavelength Properties Of the Crabmentioning

confidence: 84%

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Pulsar-Wind Nebulae

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Section: Multiwavelength Properties Of the Crabmentioning

confidence: 84%

“…Here we shortly review the recent development of the PWNe theory; for more comprehensive reviews, see, e.g. Kirk et al (2009);Arons (2012); Bühler and Blandford (2014).…”

Section: General Properties Of Pulsar Winds and Structure Of Pwnementioning

confidence: 99%

Pulsar-Wind Nebulae

et al. 2015

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“…Nevertheless, this does not preclude the possibility of a non-zero initial explosion energy. This model also incorporates the high energy photon leakage (Wang et al 2015b, see also Chen et al 2015) based on the fact that the energy injection emanated from the magnetar could be dominated by high energy photons (Bühler & Blandford 2014;Wang et al 2016a). …”

Section: Data Preparation and Modelingmentioning

confidence: 99%

Evidence for Magnetar Formation in Broad-lined Type Ic Supernovae1998bw and 2002ap

Wang

Liu

et al. 2017

ApJ

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Broad-lined type Ic supernovae (SNe Ic-BL) are peculiar stellar explosions that distinguish themselves from ordinary SNe. Some SNe Ic-BL are associated with long-duration ( 2 s) gamma-ray bursts (GRBs). Black holes and magnetars are two types of compact objects that are hypothesized to be central engines of GRBs. In spite of decades of investigations, no direct evidence for the formation of black holes or magnetars has been found for GRBs so far. Here we report the finding that the early peak (t 50 days) and late-time (t 300 days) slow decay displayed in the light curves of both SNe 1998bw (associated with GRB 980425) and 2002ap (not GRB-associated) can be attributed to magnetar spin-down with initial rotation period P 0 ∼ 20 ms, while the intermediate-time (50 t 300 days) exponential decline is caused by radioactive decay of 56 Ni. The connection between the early peak and late-time slow decline in the light curves is unexpected in alternative models. We thus suggest that GRB 980425 and SN 2002ap were powered by magnetars.

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“…The Crab Nebula is one of the most intensely studied objects in astrophysics, yet it retains the power to surprise us (see Bühler & Blandford 2014;Hester 2008, for recent reviews). It is the remnant of a supernova explosion in the year ce 1054, which was witnessed by Chinese and other astronomers (Stephenson & Green 2003).…”

Section: Introductionmentioning

confidence: 99%

“…Bühler & Blandford 2014, and references therein). The origin of these flares is not yet well understood.…”

Section: Introductionmentioning

confidence: 99%

New expansion rate measurements of the Crab nebula in radio and optical

Bietenholz

Nugent²

2015

Mon. Not. R. Astron. Soc.

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We present new radio measurements of the expansion rate of the Crab nebula's synchrotron nebula over a ∼30-yr period. We find a convergence date for the radio synchrotron nebula of ce 1255 ± 27. We also re-evaluated the expansion rate of the optical line emitting filaments, and we show that the traditional estimates of their convergence dates are slightly biased. Using an un-biased Bayesian analysis, we find a convergence date for the filaments of ce 1091 ± 34 (∼ 40 yr earlier than previous estimates). Our results show that both the synchrotron nebula and the optical line-emitting filaments have been accelerated since the explosion in ce 1054, but that the synchrotron nebula has been relatively strongly accelerated, while the optical filaments have been only slightly accelerated. The finding that the synchrotron emission expands more rapidly than the filaments supports the picture that the latter are the result of the RayleighTaylor instability at the interface between the pulsar-wind nebula and the surrounding freely-expanding supernova ejecta, and rules out models where the pulsar wind bubble is interacting directly with the pre-supernova wind of the Crab's progenitor.

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The surprising Crab pulsar and its nebula: a review

Cited by 252 publications

References 171 publications

Pulsar-Wind Nebulae

Pulsar-Wind Nebulae

Evidence for Magnetar Formation in Broad-lined Type Ic Supernovae1998bw and 2002ap

New expansion rate measurements of the Crab nebula in radio and optical

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