X-Ray Evolution of SNR 1987a: The Radial Expansion

Racusin, J. L.; Park, Sangwook; Zhekov, Svetozar A.; Burrows, D. N.; Garmire, G. P.; McCray, Richard

doi:10.1088/0004-637x/703/2/1752

Cited by 49 publications

(104 citation statements)

References 35 publications

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“…6), taken with the Chandra satellite in 1999 and 2000 (Burrows et al 2000;Park et al 2002;Racusin et al 2009), when the blast wave had just reached the inner rim of the flash-ionized ring. In particular, the peaks in the mm emission in the east and south-west correspond to similar peaks in the X-ray emission at that time.…”

Section: Figmentioning

confidence: 99%

The remnant of supernova 1987A resolved at 3-mm wavelength

Lakićević

Zanardo

Loon

et al. 2012

A&A

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Context. The proximity of core-collapse supernova 1987A (SN 1987A) in the Large Magellanic Cloud (LMC) and its rapid evolution make it a unique case study of the development of a young supernova remnant. Aims. We aim at resolving the remnant of SN 1987A for the first time in the 3-mm band (at 94 GHz). Methods. We observed the source at 3-mm wavelength with a 750-m configuration of the Australia Telescope Compact Array (ATCA). We compared the image with a recent 3-cm image and with archival X-ray images.Results. We present a diffraction-limited image with a resolution of 0. 7, revealing the ring structure seen at lower frequencies and at other wavebands. The emission peaks in the eastern part of the ring. The 3-mm image bears resemblance to early X-ray images (from 1999-2000). We place an upper limit of 1 mJy (2σ) on any discrete source of emission in the centre (inside of the ring). The integrated flux density at 3 mm has doubled over the six years since the previous observations at 3 mm. Conclusions. At 3 mm -i.e. within the operational domain of the Atacama Large Millimeter/submillimeter Array (ALMA) -SN 1987A appears to be dominated by synchrotron radiation from the inner rim of the equatorial ring, characterised by moderately weak shocks. There is no clear sign of emission of a different nature, but the current limits do not rule out such component altogether.

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Section: Figmentioning

confidence: 99%

The remnant of supernova 1987A resolved at 3-mm wavelength

Lakićević

Zanardo

Loon

et al. 2012

A&A

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“…The complex structure of SN 1987A can be classified as a torus only, a torus plus two lobes, and a torus plus 4 lobes, see Racusin, Park, Zhekov, Burrows, Garmire, and McCray (2009). The region connected with the radius of the advancing torus is here identified with our equatorial region, in spherical coordinates, θ = π 2 .…”

Section: The Case Of Sn 1987amentioning

confidence: 99%

A Classical and a Relativistic Law of Motion for SN1987A

Zaninetti¹

2016

APR

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In this paper we derive some first order differential equations which model the classical and the relativistic thin layer approximations in the presence of a circumstellar medium with a density which is decreasing in the distance z from the equatorial plane. The circumstellar medium is assumed to follow a density profile with z of hyperbolic type, power law type, exponential type or Gaussian type. The first order differential equations are solved analytically, or numerically, or by a series expansion, or by Padé approximants. The initial conditions are chosen in order to model the temporal evolution of SN 1987A over 23 years. The free parameters of the theory are found by maximizing the observational reliability which is based on an observed section of SN 1987A.

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“…4. The expansion rate slowed dramatically around day 6000 to about 1780 km/s (Racusin et al 2009). Compact Remnant.…”

Section: X-ray Observationsmentioning

confidence: 99%

SN1987A: the X-ray remnant at age 25 years

et al. 2011

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Abstract. SN1987A is the best-studied core-collapse supernova in the sky. We know what the progenitor was, what the circumstellar environment was, and what the explosion looked like over a broad electromagnetic bandpass and in neutrinos. For over a decade, the Chandra X-ray Observatory has been monitoring SN1987A on a regular basis, obtaining resolved images of the developing interaction with the circumstellar material, as well as high resolution grating spectroscopy of the X-ray emission. We highlight the latest results from this campaign and discuss the overall picture of the remnant's structure that emerges from these observations.

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X-Ray Evolution of SNR 1987a: The Radial Expansion

Cited by 49 publications

References 35 publications

The remnant of supernova 1987A resolved at 3-mm wavelength

The remnant of supernova 1987A resolved at 3-mm wavelength

A Classical and a Relativistic Law of Motion for SN1987A

SN1987A: the X-ray remnant at age 25 years

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