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Crab Nebula

Magnetic dissipation in the crab nebula

Magnetic dissipation in the crab nebula

... The possibility of efficient magnetic dissipation in the Crab nebula raises the question about its observational signatures. What kind of structures if any should we expect to see and where? Unfortunately, ...

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On the origin of variable gamma-ray emission from the Crab nebula

On the origin of variable gamma-ray emission from the Crab nebula

... the Crab nebula (Tavani et ...the Crab pulsar remained unchanged during the flare, suggesting that the flare originated in the ...the Crab pulsar showed no glitch during the flare, supporting ...

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The NIKA polarimeter on science targets: Crab nebula observations at 150 GHz and dual-band polarization images of Orion Molecular Cloud OMC-1

The NIKA polarimeter on science targets: Crab nebula observations at 150 GHz and dual-band polarization images of Orion Molecular Cloud OMC-1

... Abstract. We present here the polarization system of the NIKA camera and give a summary of the main results obtained and performed studies on Orion and the Crab nebula. The polarization system was equipped ...

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Absolute calibration of the polarisation angle for future CMB B-mode experiments from current and future measurements of the Crab nebula

Absolute calibration of the polarisation angle for future CMB B-mode experiments from current and future measurements of the Crab nebula

... the Crab nebula to be constant across microwave ...the Crab polarisation angle, a CMB experiment targetting to measure r = 10 −2 can use this source as an absolute ...the Crab nebula ...

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Search for thermal X-ray features from the Crab nebula with the Hitomi soft X-ray spectrometer

Search for thermal X-ray features from the Crab nebula with the Hitomi soft X-ray spectrometer

... The Crab nebula originated from a core-collapse supernova (SN) explosion observed in 1054 ...the Crab outskirts to set a stringent upper limit to the X-ray emitting ...

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Three-dimensional magnetohydrodynamic simulations of the Crab Nebula

Three-dimensional magnetohydrodynamic simulations of the Crab Nebula

... the nebula, whereas in our model we followed Kennel & Coroniti (1984b) and assumed that they are accelerated only at the termination ...the nebula (not ...outer nebula, both the polarization and ...

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Rayleigh-Taylor instability in magnetohydrodynamic simulations of the Crab nebula

Rayleigh-Taylor instability in magnetohydrodynamic simulations of the Crab nebula

... One of the important results of Porth et al. (2014) is that the global dynamics of axisymmetric 2D models and that of 3D models with strong magnetization of the pulsar wind differ dramatically. The 2D models develop ...

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Plans for the first balloon flight of the gamma-ray polarimeter experiment (GRAPE)

Plans for the first balloon flight of the gamma-ray polarimeter experiment (GRAPE)

... the Crab and Cygnus ...the Crab nebula), it will also lay the foundation for subsequent long duration balloon flights that will be designed for studying polarization from gamma-ray bursts and solar ...

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Photon splitting bound on Lorentz Violation in QED from multi-TeV photon observation.

Photon splitting bound on Lorentz Violation in QED from multi-TeV photon observation.

... Both bounds satisfy the condition (14). The estimation for Crab nebula bound is the better one. Let us perform simple statistical analysis in order to make the bound (16) more precise. For this reason we ...

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Observations with the High Altitude GAmma-Ray (HAGAR) telescope array in the Indian Himalayas

Observations with the High Altitude GAmma-Ray (HAGAR) telescope array in the Indian Himalayas

... sources: Crab Nebula and pul- sar (83), Geminga pulsar (59), X-ray binary LSI +61 303 (8), MGRO 2019+37 (13); and extragalactic sources (blazars): Markarian 421 (75) and 501 (49), 1es2344+514 (52), and ...

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Nonsolar astronomy with the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI)

Nonsolar astronomy with the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI)

... the Crab nebula and pulsar (ecliptic latitude ...the Crab nebula is by far the brightest extended hard x-ray source in the sky, and of a perfect size to be imaged with the ...the nebula ...

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Highlights from H.E.S.S.

Highlights from H.E.S.S.

... Using the RWS simulation scheme,the extension of the Crab nebula at TeV gamma-ray energies was resolved for the first time [16], with a width of 52 assuming a Gaussian source shape (Fig.[r] ...

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Capture and commercialization of blue land crabs ("guaiamum") Cardisoma guanhumi (Lattreille, 1825) along the coast of Bahia State, Brazil: an ethnoecological approach

Capture and commercialization of blue land crabs ("guaiamum") Cardisoma guanhumi (Lattreille, 1825) along the coast of Bahia State, Brazil: an ethnoecological approach

... Land Crab collection points are acces- sible by canoes ("bateras ” ) that are propelled by rowing or by small gasoline ...the crab-harvesters themselves, and very few of the collection points can be ...

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Lipid, fatty acid and protein utilization during lecithotrophic larval development of Lithodes santolla (Molina) and Paralomis granulosa (Jacquinot)

Lipid, fatty acid and protein utilization during lecithotrophic larval development of Lithodes santolla (Molina) and Paralomis granulosa (Jacquinot)

... The fatty acid composition of the larval stages of L. santolla and P. granulosa are not essentially different from that in other decapod larvae (e.g. Levine and Sulkin, 1984; Clarke et al., 1990; Kattner et al., 1994; ...

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The Segmental Giant Neurone of the Hermit Crab Eupagurus Bernhardus

The Segmental Giant Neurone of the Hermit Crab Eupagurus Bernhardus

... The FF population of the hermit crab is largely homologous to that of the crayfish Mittenthal & Wine, 1978 and there is one large flexor neurone Key words: hermit crab, giant neurones, s[r] ...

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Advances in the culture of crabs

Advances in the culture of crabs

... the crab and the efficient operation of the ...soft-shell crab production is to grow juvenile crabs in ponds until they are ready to move to the shedding ...three-spot crab, ...the crab had ...

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Behavioral Response of Free-Ranging Blue Crabs to Episodic Hypoxia

Behavioral Response of Free-Ranging Blue Crabs to Episodic Hypoxia

... each crab exhibited the hypothesized movement response to each of the three DO scenarios was calculated and used as a single replicate in each ...each crab was a replicate and sample sizes varied from two ...

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Parahepatospora carcini n. gen., n. sp., a parasite 1 of invasive Carcinus maenas with intermediate features of sporogony between the Enterocytozoon clade and other Microsporidia

Parahepatospora carcini n. gen., n. sp., a parasite 1 of invasive Carcinus maenas with intermediate features of sporogony between the Enterocytozoon clade and other Microsporidia

... 119 120 This study describes a novel microsporidian infecting the hepatopancreas of Carcinus 121 maenas European shore crab, or invasive green crab, commonly referred to as the green 122[r] ...

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VLT / near-Infrared Integral Field Spectrometer Observations of Molecular Hydrogen Lines in the Knots in the Planetary Nebula NGC 7293 (the Helix Nebula)

VLT / near-Infrared Integral Field Spectrometer Observations of Molecular Hydrogen Lines in the Knots in the Planetary Nebula NGC 7293 (the Helix Nebula)

... Helix Nebula (NGC 7293) is an ideal target to study such small-scale ( ∼ 300 au) ...Helix Nebula using the Spectrograph for INtegral Field Observations in the Near In- frared (SINFONI) on the Very Large ...

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Quality Control Strategy On Crab Handling Process By Using Analytical Hierarchy Process Method

Quality Control Strategy On Crab Handling Process By Using Analytical Hierarchy Process Method

... outlet, Crab meat is put in a jar according to the type, The volume of meat does not exceed the capacity of the jar, The quality of ice used in accordance with drinking water standard and Giving ice: meat is 1: 1 ...

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