Echoes of an Explosive Past: Solving the Mystery of the First Superluminal Source

Bode, M. F.; O’Brien, T. J.; Simpson, Martin

doi:10.1086/381529

Cited by 38 publications

(53 citation statements)

References 18 publications

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“…If anything, knots in the northern part of the nebula seem to have suffered a stronger deceleration throughout the remnant lifetime than those in the southern part. Therefore, our calculations do not support the prediction of Bode et al (2004) that knots in the SW quarter should have been slowed down more than the rest. Smaller proper motions in the NW quadrant are also mentioned in Shara et al (2012).…”

Section: Deviations From Spherical Symmetrycontrasting

confidence: 98%

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A THREE-DIMENSIONAL VIEW OF THE REMNANT OF NOVA PERSEI 1901 (GK Per)

Liimets

Corradi

Santander-García

et al. 2012

ApJ

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We present a kinematical study of the optical ejecta of GK Per. It is based on proper-motion measurements of 282 knots from ∼20 images spanning 25 years. Doppler shifts are also computed for 217 knots. The combination of proper motions and radial velocities allows a unique three-dimensional view of the ejecta to be obtained. The main results are as follows: (1) the outflow is a thick shell in which knots expand with a significant range of velocities, mostly between 600 and 1000 km s −1 , (2) kinematical ages indicate that knots have suffered only a modest deceleration since their ejection a century ago, (3) no evidence for anisotropy in the expansion rate is found, (4) velocity vectors are generally aligned along the radial direction, but a symmetric pattern of non-radial velocities is also observed at specific directions, and (5) the total Hα+[N ii] flux has been linearly decreasing at a rate of 2.6% per year in the past decade. The eastern nebular side is fading at a slower rate than the western side. Some of the knots were displayed a rapid change of brightness during the 2004-2011 period. Over a longer timescale, a progressive circularization and homogenization of the nebula are taking place; (6) a kinematic distance of 400 ± 30 pc is determined. These results raise some problems with the previous interpretations of the evolution of GK Per. In particular, the idea of a strong interaction of the outflow with the surrounding medium in the southwest quadrant is not supported by our data.

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Section: Deviations From Spherical Symmetrycontrasting

confidence: 98%

“…INT images obtained in 1999 (Bode et al 2004) with the WFC and in 1987 (Seaquist et al 1989) with the Prime Focus Cone Unit (PFCU, pixel scale 0. 74 pixel −1 ) were downloaded from the Isaac Newton Group archive.…”

Section: Archival Imagingmentioning

confidence: 99%

A THREE-DIMENSIONAL VIEW OF THE REMNANT OF NOVA PERSEI 1901 (GK Per)

Liimets

Corradi

Santander-García

et al. 2012

ApJ

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“…Light-echo contours over IRAS imagery hinted that it predated the nova shell Bode et al, 2003. As our new kinematic data suggests a low velocity (<17 km s −1 with a Gaussian FHWM ranging from 30-40 km s −1 ) we suggest that the feature may be an illuminated part of the waist of the fossil planetary nebula.…”

Section: Introductionmentioning

confidence: 58%

“…Kinematics of the jet-like feature: Previously there have been several theories to the origin of this feature, Bode et al, 2003, Anupama et al, 2005, Shara et al, 2012, first mentioned in Anupama et al, 1993. Light-echo contours over IRAS imagery hinted that it predated the nova shell Bode et al, 2003.…”

Section: Introductionmentioning

confidence: 99%

Observations and Analysis of the GK Persei Nova Shell and its “Jet-like” Feature

Harvey

Redman

Boumis

et al. 2015

EAS Publications Series

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Abstract. GK Persei (1901, the 'Firework Nebula') is an old but bright nova remnant that offers a chance to probe the physics and kinematics of nova shells. The kinematics in new and archival longslit optical echelle spectra were analysed using the shape software. New imaging from the Aristarchos telescope continues to track the proper motion, extinction and structural evolution of the knots, which have been observed intermittently over several decades. We present for the first time, kinematical constraints on a large faint 'jet' feature, that was previously detected beyond the shell boundary. These observational constraints allow for the generation of models for individual knots, interactions within knot complexes, and the 'jet' feature. Put together, and taking into account dwarf-nova accelerated winds emanating from the central source, these data and models give a deeper insight into the GK Per nova remnant as a whole.

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“…(Some) of the LEs are scattered by dust associated with its planetary nebula (Seaquist et al 1989;Bode et al 2004). …”

Section: Nova Persei 1901 Novamentioning

confidence: 99%

Light Echoes of Transients and Variables in the Local Universe

Rest

Sinnott

Welch

2012

Publ. – Astron. Soc. Aust

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Astronomical light echoes, the time-dependent light scattered by dust in the vicinity of varying objects, have been recognized for over a century. Initially, their utility was thought to be confined to mapping out the three-dimensional distribution of interstellar dust. Recently, the discovery of spectroscopically useful light echoes around centuries-old supernovae in the Milky Way and the Large Magellanic Cloud has opened up new scientific opportunities to exploit light echoes.In this review, we describe the history of light echoes in the local Universe and cover the many new developments in both the observation of light echoes and the interpretation of the light scattered from them. Among other benefits, we highlight our new ability to classify outbursting objects spectroscopically, view them from multiple perspectives, obtain a spectroscopic time series of the outburst, and establish accurate distances to the source event. We also describe the broader range of variable objects with properties that may be better understood from light-echo observations. Finally, we discuss the prospects of new light-echo techniques not yet realized in practice.

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Echoes of an Explosive Past: Solving the Mystery of the First Superluminal Source

Cited by 38 publications

References 18 publications

A THREE-DIMENSIONAL VIEW OF THE REMNANT OF NOVA PERSEI 1901 (GK Per)

A THREE-DIMENSIONAL VIEW OF THE REMNANT OF NOVA PERSEI 1901 (GK Per)

Observations and Analysis of the GK Persei Nova Shell and its “Jet-like” Feature

Light Echoes of Transients and Variables in the Local Universe

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