# Solve Astrophysics Problems: Quasar Time Scale and Density Models

• jdw_
In summary, a quasar is a highly luminous object in the universe that is powered by supermassive black holes. Studying quasars is relevant in astrophysics as it provides insights into the formation and evolution of galaxies. The time scale of a quasar is determined by studying its brightness variability, and density models are used in astrophysics to understand the distribution of matter in the universe. Scientists use various techniques such as mathematical models and data analysis to solve problems related to quasar time scale and density models, but they also face challenges such as limited data availability and the complexity of the physics involved. However, advancements in technology and theoretical models are continuously improving our understanding of these topics.
jdw_
Hi. If anyone could help me start or solve these problems it'd be greatly appreciated.

## Homework Statement

If a quasar varies on a time scale of 4 months, how does the maximum size of the emitting region compare with the Schwarzschild radius for a 10^4 Msun black hole?

2.Calculate omega(r) and v(r) for the following density models: all of the mass M is at the center of the galaxy (milky way) b) a constant density adding up to a mass M(Rnought) at the suns orbit and no mass beyond

## 1. What is a quasar and how does it relate to astrophysics?

A quasar is a type of active galactic nucleus that emits an incredibly large amount of energy, making it one of the most luminous objects in the universe. It is believed that quasars are powered by supermassive black holes at the center of galaxies. Studying quasars can provide insight into the formation and evolution of galaxies, making it a relevant topic in astrophysics.

## 2. How is the time scale of a quasar determined in astrophysics?

The time scale of a quasar is determined by studying the variability of its brightness. Quasars can vary in brightness on timescales ranging from weeks to years. By measuring the changes in brightness over time, scientists can estimate the size and distance of the quasar, providing information about its time scale.

## 3. What is the significance of density models in astrophysics?

Density models are used in astrophysics to study the distribution of matter in the universe. They can help us understand the formation of galaxies, the evolution of the universe, and the behavior of objects such as quasars. By analyzing the density models of different objects, scientists can gain insight into the underlying physical processes at play in the universe.

## 4. How do scientists solve astrophysics problems related to quasar time scale and density models?

Scientists use a variety of techniques to solve astrophysics problems related to quasar time scale and density models. This may include mathematical models, computer simulations, and data analysis. Additionally, scientists often collaborate and share data to gain a better understanding of these complex problems.

## 5. What are the current challenges in solving astrophysics problems related to quasar time scale and density models?

Some of the current challenges in solving astrophysics problems related to quasar time scale and density models include limited data availability and the complexity of the physics involved. Additionally, these topics are still being actively researched, so there are many unanswered questions and ongoing debates in the scientific community. Further advancements in technology and theoretical models will help to overcome these challenges and improve our understanding of the universe.

Replies
1
Views
921
Replies
3
Views
2K
Replies
1
Views
2K
• High Energy, Nuclear, Particle Physics
Replies
1
Views
949
Replies
1
Views
874
• Introductory Physics Homework Help
Replies
19
Views
897
• Beyond the Standard Models
Replies
72
Views
6K
• Cosmology
Replies
6
Views
1K
• Calculus and Beyond Homework Help
Replies
3
Views
665