Local Stellar Stream

The Sun, Sirius, and the Pleiades sit in the same galactic neighbourhood as a long gas filament. The lengths and currents that are actually named each carry their own quantity.

The circumference

Take the distance from the Sun to the Pleiades, , and a round speed of . With ,

The printed Pleiades velocity relative to the Sun,, has magnitude . The same radius at that speed is . Sirius, at , has a printed vector of magnitude . Both vectors are motions relative to the Sun. The in the circumference is a round speed.

The acceleration at these numbers is . The Newtonian point mass with this period at this radius is . Newtonian cylindrical gravity, , needs .

Alves et al. (2020) describe a gas structure long, with a gas mass of order . That line is about , and the same cylindrical relation supports . Konietzka et al. (2024) report that this chain oscillates through the Galactic plane in the Galaxy's gravitational field. Their solar period is not copied here.

Where the pinch acts

A steady axial current has an azimuthal field

The force density is . It is present where the axial current density is present. Outside a rope of finite radius that density is zero, so the printed pinch force density is zero there. A neutral star outside the rope is not a term in that expression.

A surface field of , the same microgauss order as the scored disk, on a rope of radius is an axial current

The pinch ratio is on the wave's gas line and on the line. The current that would put on that orbit line is .

Force at 50 pc

The stated distance is the named rope radius, , the first station outside that rope's volume current. A neutral star there has , so the Lorentz force on it is zero. The force that is defined is the gravity of a long line,

At the gas line gives , which is on one solar mass. The orbit line gives , which is on one solar mass.

No mutual inductance is supplied, and no is supplied. The two clocks stand in the ratio .

Two inductances

The Sun–Sirius pair uses a length of and a radius of . The printed product is

The straight-wire inductance at the lengths named for the filament:

On the 100–300 pc lengths, is an AU-scale radius: at , and at . On the 1 kpc filament the radius that returns is . At 100 pc and 50 pc the wire is not thin: the internal term is the same order as the external term. A coaxial return at twice the radius, on the 1 kpc length, is .

The coronal capacitance is the Sun–Sirius product above. No capacitance is written for the long rope, and no joins the 11-year product to the 41.5 Myr circumference. At , 70 years is and 1,000 years is .

Clocks beside 41.5 Myr

A harmonic slab of midplane density has . The circumference uses and . The slab uses .

The 41.47 Myr circumference meets the half-period of the slab. That meeting is two formulas at one labelled density. Pleistocene glacial cycles are about 41 kyr and about 100 kyr. The factor between 41.5 Myr and 41 kyr is . The 1984 extinction claims are 26 Myr and Myr.

What stays as it was

The disk loop stays at . Its carriers still drift at . The heliospheric radial current stays . The particle halo is retired as inventory. This rope is not that retirement. The galactic centre is not given a jet on this page. The interior shear layer is not given a new current. The fast solar wind stays on its previous bank.