Jet streams from Compacted cores

[pluto]

Hello All

Jet streams

Thanks to Hannes Alfven, we have a good explanation what drives these jet streams.

http://www.thunderbolts.info/tpod/2006/arch06/060213hhtornado.htm

In the main stream cosmology, they attribute the jet stream from infalling matter.

The jet stream is created by the internal electromagnetic forces of the properties of the plasma matter. Meaning that the driving force is created from within and driven out.

http://plasmascience.net/tpu/TheUniverse.html
http://plasmascience.net/tpu/elec_currents.html
http://plasmascience.net/tpu/elec_currents.html
http://www.catastrophism.com/texts/electricity-in-space/index.htm

[Torulf]

Thanks. It is lot of interesting papers att your links.

[pluto]

Hello All

Read them, but keep an open mind.

Are you just starting to learn cosmology.

If you want to more reading or wish to discuss, just let me know

[zeuz]

Its just another large scale structure impossible to explain with the exclusively attractive field of gravity, and easily explained with long range plasma/EM forces.

I expect that the mainstream explanation will find some invisible Gravitational Gnomes to explain large scale filamentary structures like this, add a bit of invisible dark matter here, a bit of fairy dust here, and its all Okay. 🙂

[pluto]

G’day Zeus

Main stream or alternative cosmology should not have an influence over science evidence.

Magnetic reconnection is probably the key to triggering the formation of the jets.

http://arxiv.org/abs/0903.3968
Reconnection Electric Field and Hardness of X-Ray Emission of Solar Flares

Authors: Chang Liu, Haimin Wang
(Submitted on 23 Mar 2009)

Abstract: Magnetic reconnection is believed to be the prime mechanism to trigger solar flares and accelerate electrons up to energies of MeV. In the classical two-dimensional reconnection model, the separation motion of chromospheric ribbons manifests the successive reconnection that takes place higher up in the corona. Meanwhile, downward traveling energetic electrons bombard the dense chromosphere and create hard X-ray (HXR) emissions, which provide a valuable diagnostic of electron acceleration. Analyses of ribbon dynamics and HXR spectrum have been carried out separately. In this Letter, we report a study of the comparison of reconnection electric field measured from ribbon motion and hardness (spectral index) of X-ray emission derived from X-ray spectrum. Our survey of the maximum average reconnection electric field and the minimum overall spectral index for 13 two-ribbon flares show that they are strongly anti-correlated. The former is also strongly correlated with flare magnitude measured using the peak flux of soft X-ray emissions. These provide strong support for electron acceleration models based on the electric field generated at reconnecting current sheet during flares.

[pluto]

G’day from the land of ozzzzzzzz

This is an interesting link

Plasma Astrophysics Problems in Star and Planet Formation
Feb-09

http://adsabs.harvard.edu/abs/2009arXiv0902.3617Z
http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009arXiv0902.3617Z&link_type=PREPRINT&db_key=PRE

The major questions relevant to star and planet formation are: What controls the rate, efficiency, spatial clustering, multiplicity, and initial mass function of star formation, now and in the past? What are the major feedback mechanisms through which star formation affects its environment? What controls the formation and orbital parameters of planets, especially terrestrial planets? These questions cannot be fully addressed without understanding key magnetohydrodynamics (MHD) and plasma physics processes. Although some of these basic problems have long been considered intractable, attacking them through a combination of laboratory experiment, theory, and numerical simulation is now feasible, and would be fruitful. Achieving a better understanding of these processes is critical to interpreting observations, and will form an important component of astrophysical models. These models in turn will serve as inputs to other areas of astrophysics, e.g. cosmology and galaxy formation.

[pluto]

G’day from the land of ozzzzz

Its a nice day in Sydney, clear sky and cool nice temp.

I read this paper sometime ago, very interesting, just sharing the reading.

Simulations of Ultrarelativistic Magnetodynamic Jets from Gamma-ray Burst Engines
http://aps.arxiv.org/abs/0803.3807

Authors: Alexander Tchekhovskoy (1), Jonathan C. McKinney (2), Ramesh Narayan (1) ((1) Harvard CfA/ITC, (2) Stanford University/KIPAC)
(Submitted on 27 Mar 2008 (v1), last revised 8 May 2008 (this version, v2))

Abstract: Long-duration gamma-ray bursts (GRBs) require an engine capable of driving a jet of plasma to ultrarelativistic bulk Lorentz factors of up to several hundred and into narrow opening angles of a few degrees. We use global axisymmetric stationary solutions of magnetically-dominated (force-free) ultrarelativistic jets to test whether the popular magnetic-driving paradigm can generate the required Lorentz factors and opening angles. Our global solutions are obtained via time-dependent relativistic ideal magnetodynamical numerical simulations which follow the jet from the central engine to beyond six orders of magnitude in radius. Our model is primarily motivated by the collapsar model, in which a jet is produced by a spinning black hole or neutron star and then propagates through a massive stellar envelope. We find that the size of the presupernova progenitor star and the radial profile of pressure inside the star determine the terminal Lorentz factor and opening angle of the jet. At the radius where the jet breaks out of the star, our well-motivated fiducial model generates a Lorentz factor $gammasim 400$ and a half-opening angle $theta_jsim 2^circ$, consistent with observations of many long-duration GRBs. Other models with slightly different parameters give $gamma$ in the range 100 to 5000 and $theta_j$ from $0.1^circ$ to $10^circ$, thus reproducing the range of properties inferred for GRB jets. A potentially observable feature of some of our solutions is that the maximum Poynting flux in the jet is found at $theta sim theta_j$ with the jet power concentrated in a hollow cone, while the maximum in the Lorentz factor occurs at an angle $theta$ substantially smaller than $theta_j$ also in a hollow cone. [abridged]

[tensordyne]

I thought Hannes Alfven said that magnetic reconnection is pseudo-science. What is the deal with Magnetic Reconnection anyways? Is it pseudo-science? If so, why? Time to do some research.

[Author]

Posts