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Sadowski, Caitlin; Yi, Jaeheon

doi:10.1145/2134243.2134248

Cited by 4 publications

(1 citation statement)

References 47 publications

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“…Central engines of these events might be central compact objects (CCOs, e.g. black holes) plus accretion disk systems (Pringle 1981;Rees 1988;Abramowicz et al 1989;Narayan et al 1992;Narayan & Yi 1994;Yuan 2001;Sadowski et al 2014;Jiang et al 2014;Yuan & Narayan 2014). Since the angular momentum of the accretion disk is not necessarily parallel to that of the CCO, a jet powered by such a central engine may precess (Sarazin et al 1980;Lu 1990;Lu & Zhou 2005).…”

Section: Introductionmentioning

confidence: 99%

Polarization of Astrophysical Events with Precessing Jets

Lan

Xue

Xiong

et al. 2019

ApJ

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A central compact object (CCO, e.g. a black hole) with an accretion disk has been suggested as the common central engine of various astrophysical phenomena, such as gamma-ray bursts (GRBs), tidal disruption events (TDEs) and active galactic nuclei (AGNs). A jet powered by such a system might precess due to the misalignment of the angular momenta of the CCO and accretion disk. Some quasi-periodic behaviors observed in the light curves of these phenomena can be well interpreted within the framework of a precessing jet model. In this paper, we study the emission polarization of precessing jets in the three kinds of phenomena. The polarization angle also shows a gradual change for the synchrotron emission in both the random and toroidal magnetic field configurations with the precessing jet, while it can only change abruptly by 90 • for the non-precessing top-hat jet. Polarization properties are periodic due to the assumptions made in our model. The polarization observations are crucial to confirm the precession nature of jets in GRBs, TDEs and AGNs.

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Section: Introductionmentioning

confidence: 99%

Polarization of Astrophysical Events with Precessing Jets

Lan

Xue

Xiong

et al. 2019

ApJ

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10 Years of research on debugging concurrent and multicore software: a systematic mapping study

et al. 2016

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SideTrack

Sadowski

Flanagan

2009

Proceedings of the 7th Workshop on Parallel and Distributed Systems: Testing, Analysis, and Debugging

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Atomicity is a key correctness specification for multithreaded programs. Prior dynamic atomicity analyses include precise tools, which report an error if and only if the observed trace is not serializable; and imprecise tools, which generalize from the observed trace to report errors that might occur on other traces, but which may also report false alarms. This paper presents SideTrack, a lightweight online dynamic analysis that generalizes from the observed trace without introducing the potential for false alarms. If SideTrack reports an error, then some feasible trace of the source program is not serializable. Experimental results show that this generalization ability increases the number of atomicity violations detected by SideTrack by 40%.

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<u>T</u>i<u>d</u>d<u>l</u>e

Cited by 4 publications

References 47 publications

Polarization of Astrophysical Events with Precessing Jets

Polarization of Astrophysical Events with Precessing Jets

10 Years of research on debugging concurrent and multicore software: a systematic mapping study

SideTrack

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