The Spectrum of a BL Lacertae Object Shows

question 63

Multiple Choice

The spectrum of a BL Lacertae object shows:

• A) strong, highly redshifted emission lines.
• B) doubled emission lines split by the Doppler shift from oppositely directed jets of material.
• C) absorption lines of highly ionized atoms.
• D) a smooth continuum with no recognizable features.

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Definitions:

Relative Measures

Relative measures refer to statistical metrics that are used to compare or assess a value in relation to another value, such as ratios or rates, providing a basis for comparison.

Income Inequality

The disparate sharing of income between households or individuals within an economic structure.

Highly Educated Workers

Highly educated workers are individuals who have attained a high level of education, often including university degrees, and possess advanced knowledge and skills in their fields.

Median Income

The middle income in a list of incomes, where half of the incomes are higher and half are lower.