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You will construct realistic models of White Dwarf stars usi...

You will construct realistic models of White Dwarf stars using the same type of computer analysis that you used in the previous assignment. Assume that their temperature is zero (i.e., they are fully electron degenerate) and that they contain only C/O. You will need to blend the non-relativistic ...

Question 1 Within a flux tube, a singly ionised oxygen 10 i...

Question 1 Within a flux tube, a singly ionised oxygen 10 is spiralling along a given field-line from points O to P to Q as shown in the schematic diagram (a). The temperature profile along the flux tube is displayed in diagram (b). . a) b) 10e O Q P 2x105 105 O P Along the flux tube ...

Mario is in a galaxy where the force of gravity (1) 2r4 w...

Mario is in a galaxy where the force of gravity (1) 2r4 where r is the distance of Mario from the center of the planet O and Y is a positive constant. Initially, Mario is at a distance a from O, and jumps with speed U directly away from O. (1) Show that Mario will escape to infinity if u &...

5x107 4x107 3x107 2x107 1 x107 630 640 650 660 670...

5x107 4x107 3x107 2x107 1 x107 630 640 650 660 670 680 690 Wovelength 3) (5 points) Using the figure above, for the same galaxy: a) (2.5 points) calculate the V-band Luminosity of the galaxy (in Lo) and the average surface brightness of the galaxy (in Lo pc-2) interior to Re. You may...

1) (10 points) The Luminosity function (# of galaxie...

1) (10 points) The Luminosity function (# of galaxies in a 10Mpc x 10Mpc x 10Mpc cube i.e. 1000 Mpc³ for spiral galaxies can be approximated by the function: - -0.45 L (L)spiral = 6.0 e-1.5% L, (where L* = 2x1010 L.) whereas that for ellipticals has a pure exponential f...

2) (10 points) The dark matter halo of a galaxy can be descr...

2) (10 points) The dark matter halo of a galaxy can be described by the equation: ATGA(+)== r2 + 2 where p(r) is the density of the halo at distance r from the galactic centre, V is the velocity of an object in the halo, and a is the "length scale" for the halo. Consider an obj...

3) (10 points) The cosmic microwave background (CMB) has a m...

3) (10 points) The cosmic microwave background (CMB) has a measured temperature of 2.73K but is radiation from the time of recombination (z = 1100) when the Universe was 3000 K. It can be modelled as arising from a sphere with a radius of 14.1 Gpc. a) (3 points) The primordial large-scale structu...

1) (10 points) The figure below (left) shows a spectrum of t...

1) (10 points) The figure below (left) shows a spectrum of the [CIV] line (which has a rest wavelength of 1548 Â) observed in a background galaxy which is being gravitationally lensed by a foreground cluster. The image to the right shows the brightest lensed component of this galaxy in whic...

2) (10 points) The image below shows (left) a spectrum of an...

2) (10 points) The image below shows (left) a spectrum of an elliptical galaxy where the red line indicates the measured central wavelength of the H-alpha line (Àrest = 656.6 nm) and (right) the R-band surface brightness profile of the same galaxy. The crosses indicate the observed surface...

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