Pulsars are a celestial object, thought to be a rapidly rotating neutron star, that emits regular pulses of waves with a frequency of 2.13 x 104 Hz. An electromagnetic spectrum is shown in the image.
The investigators were most likely using a telescope that detects:
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A. Microwaves
B. Gamma Rays
C. Radio Waves
D. Infrared Waves
Based on the information provided, the investigators were most likely using a telescope that detects radio waves. Pulsars emit regular pulses of waves, and radio waves are a type of electromagnetic wave that includes frequencies within the range of 2.13 x 104 Hz.
The data table below shows the chemical composition of stars at different life cycle stages.
Elements emit different spectral patterns.
How will the emission spectra differ for a main sequence and white dwarf star?
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Both stars show emission lines for carbon (C), while the white dwarf star emission spectrum will show lines for carbon (C) and oxygen (O).
The main sequence star emission spectrum will show emission lines for hydrogen (H) and helium (He), which is not present in the white dwarf emission spectrum.
Both stars contain hydrogen (H) and helium (He) gases, so the emission spectrum will be the same for both stars.
The white dwarf star emission spectrum will show emission lines for hydrogen (H) and helium (He), which is not present in the main sequence emission spectrum.
The correct answer is: The white dwarf star emission spectrum will show emission lines for hydrogen (H) and helium (He), which is not present in the main sequence emission spectrum.
Main sequence stars are primarily composed of hydrogen and helium, and their emission spectra will show lines for these elements. White dwarf stars, on the other hand, are the remnants of low to medium mass stars and have exhausted their nuclear fuel. Their emission spectra will show lines for elements such as carbon and oxygen, which have been synthesized in the core of the star during its earlier stages of evolution. Thus, the emission spectra will differ between main sequence and white dwarf stars.
To determine which type of waves the investigators were most likely using a telescope to detect, we need to consider the frequency of the waves emitted by pulsars.
The frequency mentioned in the question is 2.13 x 10^4 Hz. Based on this frequency, we can identify the region of the electromagnetic spectrum that corresponds to this range.
The electromagnetic spectrum spans a wide range of wavelengths and frequencies, including radio waves, microwaves, infrared waves, visible light, ultraviolet waves, X-rays, and gamma rays.
In general, the frequency of waves increases as we move from left to right across the electromagnetic spectrum. Radio waves have the lowest frequencies, followed by microwaves, infrared waves, visible light, ultraviolet waves, X-rays, and finally, gamma rays with the highest frequencies.
Based on the frequency of 2.13 x 10^4 Hz mentioned in the question, it falls within the range of radio waves. Therefore, the investigators were most likely using a telescope that detects radio waves to study pulsars.
Therefore, the correct answer is C. Radio Waves.