Observationally,the Biggest Difference Between Quasars and Other Active Galaxies Such

question 10

Multiple Choice

Observationally,the biggest difference between quasars and other active galaxies such as Seyfert and radio galaxies appears to be that (see Table 13-2,Comins,Discovering the Essential Universe,6th ed.) :

• A) quasars appear to be located inside elliptical galaxies, whereas Seyfert and radio galaxies are spirals.
• B) Seyfert and radio galaxies do not have the bright, starlike nuclei of quasars.
• C) the brightness of Seyfert and radio galaxies does not vary with time.
• D) Seyfert and radio galaxies are less powerful energy emitters than quasars.

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Definitions:

Limbic System

An intricate assembly of nerve systems and networks within the brain, incorporating multiple regions close to the cortex's boundary that manage instinct and mood. It governs fundamental emotions (such as fear, joy, and anger) and primal urges (like appetite, sexual desire, dominance, and parental care).

Stress Hormones

Biochemical substances, such as cortisol and adrenaline, released by the body in response to stress, affecting physical and psychological well-being.

PTSD

Post-traumatic stress disorder is a psychological condition that occurs after someone has been through or seen a horrifying event, leading to symptoms like flashbacks, nightmares, and intense anxiety.

PTSD

Post-Traumatic Stress Disorder is a mental health condition triggered by witnessing or experiencing a terrifying event, characterized by flashbacks, nightmares, and severe anxiety.