2-Amino-1-[bis(<i>N</i>,<i>N</i>-dimethylamino)phosphoramido]benzimidazole

Raouafi, Noureddine; Freytag, Mat­thias; Jones, Peter G.; Benkhoud, Mohamed Lamine

doi:10.1107/s1600536804020161

Cited by 23 publications

(28 citation statements)

References 9 publications

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“…This event provides solid observational evidence that recurrent two-sided loop jets can be driven by minifilament eruptions, which is in line with previous observations that minifilament eruptions result in single-spire jets (Sterling et al 2015Raouafi et al 2016). This is inconsistent with previous classical two-sided loop jet model (Yokoyama & Shibata 1995 and observations (Alexander & Fletcher 1999;Jiang et al 2013;Zheng et al 2018), which thought two-sided loop jet is driven by magnetic reconnection between emerging bipoles and their overlying horizontal magnetic fields.…”

Section: Conclusion and Discussionsupporting

confidence: 67%

“…It is generally accepted that omnipresent jet activities of various spatial and temporal scales in the solar atmosphere are caused by magnetic reconnection between emerging magnetic flux and pre-existing ambient coronal magnetic fields (Shibata et al 1992(Shibata et al , 1994Shimojo et al 1996;Jiang et al 2007;Pariat et al 2010;Yang et al 2011;Li et al 2012;Raouafi et al 2016). Shibata et al (1994) suggested that when a bipolar emerging flux emerges from below the solar surface into the corona and interacts with a vertical or oblique coronal field, an anemone jet will be initiated; and when a bipolar emerging flux intrudes into and continuously interacts with a horizontal coronal field, a twosided loop jet will be initiated.…”

Section: Introductionmentioning

confidence: 99%

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Recurrent Two-sided Loop Jets Caused By Magnetic Reconnection between Erupting Minifilaments and a nearby Large Filament

Yang

et al. 2019

ApJ

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Using high spatial and temporal data from the New Vacuum Solar Telescope (NVST) and the Solar Dynamics Observatory (SDO), we present unambiguous observations of recurrent two-sided loop jets caused by magnetic reconnection between erupting minifilaments and nearby large filament. The observations demonstrate that three twosided loop jets, which ejected along the large filament in opposite directions, had similar appearance and originated from the same region. We find that a minifilament erupted and drove the first jet. It reformed at the same neutral line later, and then underwent partial and total eruptions, drove the second and third jets, respectively. In the course of the jets, cool plasma was injected into the large filament. Furthermore, persistent magnetic flux cancelation occurred at the neutral line under the minifilament before its eruption and continued until the end of the observation. We infer that magnetic flux cancellation may account for building and then triggering the minifilament to erupt to produce the two-sided loop jets. This observation not only indicates that two-sided loop jets can be driven by minifilament eruptions, but also sheds new light on our understanding of the recurrent mechanism of two-sided loop jets.

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Section: Conclusion and Discussionsupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Recurrent Two-sided Loop Jets Caused By Magnetic Reconnection between Erupting Minifilaments and a nearby Large Filament

Yang

et al. 2019

ApJ

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“…Corresponding author: Yuandeng Shen ydshen@ynao.ac.cn Jet or jet-like phenomena are widely observed in the solar atmosphere; they are thought to be important for understanding the enigmatic problems of coronal heating and the acceleration of solar winds (Raouafi et al 2016). Based on morphology, solar jets are divided into collimated anemone jets and two-sided-loop jets, in which the former is produced by the magnetic reconnection between emerging bipoles and the ambient open magnetic fields (Yokoyama & Shibata 1995;Shen et al 2011), while the latter is by the reconnection between emerging bipoles and the overlying horizontal fields (Yokoyama & Shibata 1995;Tian et al 2017;Miao et al 2018;Sterling et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Round-trip Slipping Motion of the Circular Flare Ribbon Evidenced in a Fan-spine Jet

Shen

Zhou

et al. 2019

ApJL

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A solar jet on 2014 July 31, which was accompanied by a GOES C1.3 flare and a mini-filament eruption at the jet base, was studied by using observations taken by the New Vacuum Solar Telescope and the Solar Dynamic Observatory. Magnetic field extrapolation revealed that the jet was confined in a fan-spine magnetic system that hosts a null point at the height of about 9 Mm from the solar surface. An inner flare ribbon surrounded by an outer circular ribbon and a remote ribbon were observed to be associated with the eruption, in which the inner and remote ribbons respectively located at the footprints of the inner and outer spines, while the circular one manifested the footprint of the fan structure. It is interesting that the circular ribbon's west part showed an interesting round-trip slipping motion, while the inner ribbon and the circular ribbon's east part displayed a northward slipping motion. Our analysis results indicate that the slipping motions of the inner and the circular flare ribbons reflected the slipping magnetic reconnection process in the fan quasi-separatrix layer, while the remote ribbon was associated with the magnetic reconnection at the null point. In addition, the filament eruption was probably triggered by the magnetic cancellation around its south end, which further drove the slipping reconnection in the fan quasiseparatrix layer and the reconnection at the null point.

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“…Previous observations indicate that solar jets are commonly associated with magnetic flux emergence, cancellation, and micro-flares at their eruption source region (Jiang et al 2007;Panesar et al 2017;Sterling et al 2018). Statistical studies show that solar jets have a speed of about 200 km s −1 , widths in the range of 2000-200000 km, and lifetimes from minutes to tens of minutes (Nisticò et al 2009;Shen et al 2011;Pucci et al 2013;Raouafi et al 2016). Studies in the past few decades have indicated that jet phenomenon is very important for our understanding of solar physics.…”

mentioning

confidence: 98%

Stereoscopic Observations of an Erupting Mini-filament-driven Two-sided-loop Jet and the Applications for Diagnosing a Filament Magnetic Field

Shen

Yuan

et al. 2019

ApJ

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The ubiquitous solar jets or jet-like activities are generally regarded as an important source of energy and mass input to the upper solar atmosphere and the solar wind. However, questions about their triggering and driving mechanisms are not completely understood. By taking advantage of high temporal and high spatial resolution stereoscopic observations taken by the Solar Dynamic Observatory (SDO) and the Solar Terrestrial Relations Observatory (STEREO), we report an intriguing two-sided-loop jet occurred on 2013 June 02, which was dynamically associated with the eruption of a mini-filament below an overlying large filament, and two distinct reconnection processes are identified during the formation stage. The SDO observations reveals that the two-sided-loop jet showed a concave shape with a projection speed of about 80 -136 km s −1 . From the other view angle, the STEREO ahead observations clearly showed that the trajectory of the two arms of the two-sided-loop were along the cavity magnetic field lines hosting the large filament. Contrary to the well-accepted theoretical model, the present observation sheds new light on our understanding of the formation mechanism of two-sided-loop jets. Moreover, the eruption of the two-sided-loop jet not only supplied mass to the overlying large filament, but also provided a rare opportunity to diagnose the magnetic structure of the overlying large filament via the method of three-dimensional reconstruction.

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2-Amino-1-[bis(N,N-dimethylamino)phosphoramido]benzimidazole

Abstract: The crystal structure of the title compound, C11H18N5OP, is stabilized by an intermolecular N—H⋯N‐type hydrogen bond and another C—H⋯O interaction that is intramolecular. The N—H⋯N hydrogen bonding leads to inversion‐related dimers.

Cited by 23 publications

References 9 publications

Recurrent Two-sided Loop Jets Caused By Magnetic Reconnection between Erupting Minifilaments and a nearby Large Filament

Recurrent Two-sided Loop Jets Caused By Magnetic Reconnection between Erupting Minifilaments and a nearby Large Filament

Round-trip Slipping Motion of the Circular Flare Ribbon Evidenced in a Fan-spine Jet

Stereoscopic Observations of an Erupting Mini-filament-driven Two-sided-loop Jet and the Applications for Diagnosing a Filament Magnetic Field

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2-Amino-1-[bis(N,N-dimethylamino)phosphoramido]benzimidazole

Abstract: The crystal structure of the title compound, C11H18N5OP, is stabilized by an intermolecular N—H⋯N‐type hydrogen bond and another C—H⋯O interaction that is intramol­ecular. The N—H⋯N hydrogen bonding leads to inversion‐related dimers.

Cited by 23 publications

References 9 publications

Recurrent Two-sided Loop Jets Caused By Magnetic Reconnection between Erupting Minifilaments and a nearby Large Filament

Recurrent Two-sided Loop Jets Caused By Magnetic Reconnection between Erupting Minifilaments and a nearby Large Filament

Round-trip Slipping Motion of the Circular Flare Ribbon Evidenced in a Fan-spine Jet

Stereoscopic Observations of an Erupting Mini-filament-driven Two-sided-loop Jet and the Applications for Diagnosing a Filament Magnetic Field

Contact Info

Product

Resources

About

Abstract: The crystal structure of the title compound, C11H18N5OP, is stabilized by an intermolecular N—H⋯N‐type hydrogen bond and another C—H⋯O interaction that is intramolecular. The N—H⋯N hydrogen bonding leads to inversion‐related dimers.