Suppose We Observe a Source of X- Rays That Varies

question 9

Multiple Choice

Suppose we observe a source of X- rays that varies substantially in brightness over a period of a few days. What can we conclude?

• A)The X- ray source must have a strong, rapidly varying magnetic field.
• B)The X- ray source is a quasar.
• C)The X- ray source contains a black hole with an accretion disk.
• D)The X- ray source is no more than a few light- days in diameter.

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Definitions:

Race Traitor

A derogatory term used to describe someone who is perceived as betraying their own race by their actions or beliefs.

William Hannibal Thomas

An African American author, soldier, and lawyer, known for his controversial 1901 book "The American Negro."

The American Negro

Historically, a term used to describe African Americans, particularly during periods when racial terminologies were less sensitive.

General Education Board

An organization established by John D. Rockefeller and Frederick T. Gates in 1903 to fund and reform education in the United States, particularly in the South.