5,370 research outputs found
Returning again. Resurrection narratives and afterlife aesthetics in contemporary television drama
This article examines the return of the dead to life in two television drama series of the last decade, Les Revenants (The Returned; 2012–15, Canal) and Glitch (2015–19, ABC Studios). The returning dead do not figure as classic undead figures, as ghosts or zombies, instead returning to life exactly as they were at the point of death and in search of a renewed purpose and an ultimate destiny. This, the article suggests, can constitute a form of latter-day resurrection. The article shows how both series present established religion as incapable of recognizing the return of the dead, while science and the secular state are also never wholly able to explain and manage these apparent miracles. The return of this seemingly religious trope to an ostensibly secular world and the mutual jostling and overlapping of theological, scientific, and aesthetic discourses, as they seek to represent and explain the mystery, not only constitutes a postsecular theme but also occasions the search, at times inherent to artistic form, at times explicit and self-reflexive, for an appropriately postsecular televisual aesthetics
Nature of cyclical changes in the timing residuals from the pulsar B1642-03
We report an analysis of timing data for the pulsar B1642-03 (J1645-0317)
gathered over the 40-year time span between 1969 and 2008. During this
interval, the pulsar experienced eight glitch-like events with a fractional
increase in the rotation frequency Deltanu/nu=(0.9-2.6)x10^{-9}. We have
revealed two important relations in the properties of these peculiar glitches.
The first result shows that there is a strong linear correlation between the
amplitude of the glitch and the time interval to the next glitch. The second
result shows that the amplitude of the glitches is modulated by a periodic
large-scale sawtooth-like function. As a result of this modulation, the glitch
amplitude varies discretely from glitch to glitch with a step of 1.5x10^{-9} Hz
in the range (2.4-6.9)x10^{-9} Hz. The post-glitch time interval also varies
discretely with a step of about 600 days in the range 900-2700 days. An
analysis of the data showed that three modulation schemes with modulation
periods of 43 years, 53 years and 60 years are possible. The best model is the
60-year modulation scheme including 12 glitches. We make a conclusion that the
nature of the observed cyclical changes in the timing residuals from PSR
B1642-03 is a continuous generation of peculiar glitches whose amplitudes are
modulated by a periodic large-scale sawtooth-like function. As the modulation
function is periodical, the picture of cyclical timing residuals will be
exactly repeated in each modulation period or every 60 years.Comment: 26 pages, 9 figures. Accepted for publication in the Astrophysical
Journa
Glitch or anti-glitch: a Bayesian view
The sudden spin-down in the rotation of magnetar 1E 2259+586 observed by Archibald et al.
(2013) was a rare event. However this particular event, referred to as an anti-glitch, was followed
by another event which Archibald et al. (2013) suggested could either be a conventional glitch or
another anti-glitch. Although there is no accompanied radiation activity or pulse profile change, there
is decisive evidence for the existence of the second timing event, judging from the timing data. We
apply Bayesian Model Selection to quantitatively determine which of these possibilities better explains
the observed data. We show that the observed data strongly supports the presence of two successive
anti-glitches with a Bayes Factor, often called the odds ratio, greater than 40. Furthermore, we show
that the second anti-glitch has an associated frequency change Δν of -8.2 X 10<sup>8</sup> Hz. We discuss the
implications of these results for possible physical mechanisms behind this anti-glitch
Cyclical Changes in the Timing Residuals from the Pulsar B0919+06
We report the detection of a large glitch in the pulsar B0919+06
(J0922+0638). The glitch occurred in 2009 November 5 (MJD 55140) and was
characterized by a fractional increase in the rotation frequency of
Deltanu/nu=1.3x10^{-6}. A large glitch happens in the pulsar whose rotation has
unstable character. We present the results of the analysis of the rotation
behavior of this pulsar over the 30-year time span from 1979 to 2009. These
results show that the pulsar's rotation frequency underwent continuous, slow
oscillations which look like glitch-like events. During the 1991-2009 interval,
the pulsar experienced a continuous sequence of 12 slow glitches with a
fractional increase in the rotation frequency Deltanu/nu=1.5x10^{-9}. All the
slow glitches observed have a similar signature related to a slow increase in
the rotation frequency during 200 days and the subsequent relaxation back to
the pre-glitch value during 400 days. We show that a continuous sequence of
such slow glitches is characterized by practically identical amplitudes equal
to Deltanu=3.5x10^{-9} Hz and identical time intervals between glitches of
about 600 days and is well described by a periodic sawtooth-like function. The
detection of two different phenomena, such as a large glitch and a sequence of
slow glitches, indicates the presence of two types of discontinuities in the
rotation frequency of the pulsar B0919+06. These discontinuities can be
classified as normal and slow glitches.Comment: 24 pages, 5 figures. Submitted to Ap
Pulsar state switching, timing noise and free precession
Recent radio pulsar observations have shown that a number of pulsars display
interesting long term periodicities in their spin-down rates. At least some of
these pulsars also undergo sharp changes in pulse profile. This has been
convincingly attributed to the stars abruptly switching between two different
magnetospheric states. The sharpness of these transitions has been taken as
evidence against free precession as the mechanism behind the long term
variations. We argue that such a conclusion is premature. By performing a
simple best-fit analysis to the data, we show that the relationship between the
observed spin and modulation periods is of approximately the correct form to be
accounted for by the free precession of a population of neutron stars with
strained crusts, the level of strain being similar in all of the stars, and
consistent with the star retaining a memory of a former faster rotation rate.
We also provide an argument as to why abrupt magnetospheric changes can occur
in precessing stars, and how such changes would serve to magnify the effect of
precession in the timing data, making the observation of the precession more
likely in those stars where such switching occurs. We describe how future
observations could further test the precession hypothesis advanced here.Comment: Additional reference inserted; to appear in MNRA
Years of RXTE Monitoring of Anomalous X-ray Pulsar 4U 0142+61: Long-Term Variability
We report on 10 years of monitoring of the 8.7-s Anomalous X-ray Pulsar 4U
0142+61 using the Rossi X-Ray Timing Explorer (RXTE). This pulsar exhibited
stable rotation from 2000 March until 2006 February: the RMS phase residual for
a spin-down model which includes nu, nudot, and nuddot is 2.3%. We report a
possible phase-coherent timing solution valid over a 10-yr span extending back
to March 1996. A glitch may have occured between 1998 and 2000, but is not
required by the existing timing data. The pulse profile has been evolving since
2000. In particular, the dip of emission between its two peaks got shallower
between 2002 and 2006, as if the profile were evolving back to its pre-2000
morphology, following an earlier event, which possibly also included the glitch
suggested by the timing data. These profile variations are seen in the 2-4 keV
band but not in 6-8 keV. We also detect a slow increase in the pulsed flux
between 2002 May and 2004 December, such that it has risen by 36+/-3% over 2.6
years in the 2-10 keV band. The pulsed flux variability and the narrow-band
pulse profile changes present interesting challenges to aspects of the magnetar
model.Comment: 28 pages, 8 figures, accepted by Ap
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