Question: A galaxy cluster has a galaxy behind it whose image we see as being smeared out and curved, with an angular radius of curvature on

A galaxy cluster has a galaxy behind it whose image we see as being smeared out and curved, with an angular radius of curvature on the sky of θE. The background galaxy is at redshift zgal and the cluster is at zclust. What is the mass of the cluster in solar masses? Give your response in scientific notation with one decimal place. (The Hubble constant is of course 70 km/s/Mpc, and you can assume the Hubble law for these low redshifts). Values: zgal = 0.10 zclust = 0.05 θE = 116.7 arcseconds

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

To calculate the mass of the galaxy cluster we can use the formula for the Einstein radius E 4 G M c... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Physics Questions!

Let A, B be sets. Define: (a) the Cartesian product (A B) (b) the set of relations R between A and B (c) the identity relation A on the set A [3 marks] Suppose S, T are relations between A and B, and...

Data gistrun sending inside a pack fills in as conventional allowing subordinate rules to execute on progressive clock cycles. Correspondence between gatherings conventionally causes a surprising...

QUIZ... Let D be a poset and let f : D D be a monotone function. (i) Give the definition of the least pre-fixed point, fix (f), of f. Show that fix (f) is a fixed point of f. [5 marks] (ii) Show that...

A galaxy cluster has a galaxy behind it whose image we see as being smeared out and curved, with an angular radius of curvature on the sky of E. The background galaxy is at redshift zgal and the...

PHY5100 - Astronomy Mame: Lab 11 - Hubble's Law Finding the Age of the Universe Introduction An object's spectrum can be used to determine the temperature and chemical composition of that object. A...

Question 15 (1 point) Listen Which of the following observations cannot be explained by the Big Bang theory, unless we assume that an episode of inflation occurred? Question 15 options: the fact that...

A different galaxy cluster has galaxies within it whose dispersion in redshift (about their mean redshift) is found from spectroscopic observations to be z. The mean redshift of all the galaxies is z...

A particular distant star is found to be 92c . y from Earth. On a direct line between us and the star and 35c . y from the distant star is a dense white dwarf star with a mass equal to 3 times the...

For the Case Study assignment, please respond to the following questions based on the attached (directly below) Beckham Case Study Reading: 1) Based on the case study and through your own personal...

crimes are inseparable from the idea of taping and playing. You sit there think- ing that this is a crime that has found its medium, or vice versa - cheap mass production, the sequence of repeated...

i) The drift parameter of an operational amplifier used in a non-inverting amplifier is given below. Input offset voltage variation= +10 pV/C Input offset current variation= +0.7 nAC Assuming R = 2MQ...

Say that equilibrium price fell and quantity remained constant. What would you say was the most likely cause?

7.90 An attenuator probe employed with oscilloscopes was designed to reduce the magnitude of the input voltage v i by a factor of 10. As shown in Fig. 7.149, the oscillo scope has internal resistance...

Karlik Enterprises distributes a single product whose selling price is $24 and whose variable expense is $18 per unit. The companys monthly fixed expense is $24,000. Required: 1. Prepare a...

Before Gordon Corporation engages in the treasury stock transactions listed below, its general ledger reflects, among others, the following account balances (par value of its stock is $30 per share)....

The director of surgery at a local hospital is interested in understanding his unit's costs. An assistant collected data for the past 36 months on unit cost (labor, supplies, and so on) along with...

At what interest rate will $750 grow into $3,132.83 in 15 years?

The strategy of inflation targeting, which seeks to keep inflation close to a numerical goal over a reasonable horizon, has been referred to as a policy of constrained discretion. What does this mean?

Ben's balance sheet would report which of the following types of accounts? Assets, liabilities, and net worth Assets, liabilities, and cash surplus

What are the strength and direction of the electric field at the position indicated by the dot in FIGURE P23.37? Give your answer (a) In component form. (b) As a magnitude and angle measured cw or...

In an attempt to reduce the extraordinarily long travel times for voyaging to distant stars, some people have suggested traveling at close to the speed of light. Suppose you wish to visit the red...

A merry-go-round is a common piece of playground equipment. A 3.0-m-diameter merry-go-round with a mass of 250 kg is spinning at 20 rpm. John runs tangent to the merry go-round at 5.0 m/s, in the...

Some critics of GASB Statement No. 14 (even as amended) believe that it casts too wide a netthat it requires governments to include in their reporting entity organizations over which the primary...

Go to the Forbes list of the 200 largest U.S. Charities for the most recent year available. For example, for 2011: http://www.forbes.com/lists/2011/14/200-largest-us-charities-11.html Answer the...

Discovery Barn, a not-for-prot science center for children, received a contribution of $30,000 explicitly designated for the acquisition of computers. During the year it acquired $21,000 of...