The Key to Identifying a Black Hole Candidate in a Binary

question 129

Multiple Choice

The key to identifying a black hole candidate in a binary system is that:

• A)one of the two stars cannot be seen.
• B)the unseen companion in the system must have a sufficiently high mass.
• C)the unseen star is a contact binary.
• D)the system must be a very strong source of radio emissions.
• E)the visible companion must be an evolving main sequence or giant star.

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Definitions:

Condom Usage

The practice of using condoms as a contraceptive method and to reduce the risk of sexually transmitted infections.

Menstrual Cycle

A monthly cycle in female humans and other primates that involves hormonal changes, ovulation, and the potential for pregnancy, culminating in menstruation if pregnancy does not occur.

Childbirth

The process by which a baby is born, marking the end of pregnancy and involving labor and delivery.

Latex Condom

is a sheath made from latex used during sexual intercourse as a contraceptive and to reduce the risk of sexually transmitted infections (STIs).