Draft:Vela X-1/Quiz

File:Som 3 05 p0.jpg

Rosat image of the Vela supernova remnant and its surroundings. Credit: H.E.S.S. collaboration, F. Aharonian et al.

Vela X-1 is a lecture from the radiation astronomy department for potential inclusion in the X-ray astronomy/Course.

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Quiz

Point added for a correct answer:
Points for an incorrect answer:
Ignore the questions' coefficients:

1 Yes or No, Vela X-1 is the name and designation for the likely first extrasolar X-ray source to be discovered in the constellation Vela.

	Yes
	No

2 True or False, Some cosmic-ray observatories also look for high energy gamma rays and X-rays.

	TRUE
	FALSE

3 Which of the following are astronomical observatory phenomena associated with gamma-ray astronomy?

	20 MeV electromagnetic radiation
	the Second Small Astronomy Satellite (SAS-2)
	micrometre-sized interstellar meteor particles
	neutron irradiation
	GRBs
	meteor orbits
	thorium on the Moon

4 True or False, The Hubble Space Telescope is currently capable of X-ray imaging.

	TRUE
	FALSE

5 Which of the following are characteristic of the first true astrophysical X-ray source?

	a strong 2.223 MeV emission line
	a solar flare
	the formation of deuterium
	the electron neutrino
	OSO-3
	neutrons

6 True or False, The first X-ray telescope was carried into orbit aboard OSO 3.

	TRUE
	FALSE

7 Complete the text:

Match up the imaging system letter with the image possibilities below:

Compton Gamma Ray Observatory (EGRET) - A

XMM Newton - B

Fermi Gamma-ray Space Telescope - C

Lunar Orbiter Gamma-Ray Spectrometer - D

BATSE - E

Mars Odyssey GRS - F

GLAST - G

Swift (X-ray/Gamma-ray mission) - H

File:Geminga-1.jpg .

.

.

.

.

.

.

8 True or False, The distribution of X-ray bursts is tetratropic.

	TRUE
	FALSE

9 On what date was GRB 970228 discovered?

	August 22, 1997
	February 28, 1997
	September 7, 2002.28
	1982 the 20th between July and September
	2009 July 22nd and 8 hours
	February 14, 2014

10 True or False, On July 2, 1967, at 14:19 UTC, the Vela 4 and Vela 3 satellites detected a flash of X-radiation that was unlike any known nuclear weapons signatures.

	TRUE
	FALSE

11 Pick the characteristics of an X-ray burst.

	a strong 2.223 MeV emission line
	flashes of gamma rays
	associated with extremely energetic explosions
	most luminous events known
	can last from ten milliseconds to several minutes
	followed by a longer-lived "afterglow"

12 True or False, In 2005, ESO telescopes detected, for the first time, the visible light following a short-duration burst and tracked this light for three weeks.

	TRUE
	FALSE

13 Which types of radiation astronomy directly observe the rocky-object surface of Venus?

	meteor astronomy
	cosmic-ray astronomy
	neutron astronomy
	proton astronomy
	beta-ray astronomy
	neutrino astronomy
	gamma-ray astronomy
	X-ray astronomy
	ultraviolet astronomy
	visual astronomy
	infrared astronomy
	submillimeter astronomy
	radio astronomy
	radar astronomy
	microwave astronomy
	superluminal astronomy

14 Yes or No, In the proportional counter data from the Nike-Tomahawk flight on September 20, 1966, discrete sources Vela XR-1 and Cygnus XR-2 appear with a triangular shape characteristic of the collimator.

	Yes
	No

15 Complete the text:

Match up the item letter with each of the possibilities below:

Meteors - A

Cosmic rays - B

Neutrons - C

Protons - D

Electrons - E

Positrons - F

Gamma rays - G

Superluminals - H

X-ray jets

the index of refraction is often greater than 1 just below a resonance frequency .

iron, nickel, cobalt, and traces of iridium .

Sagittarius X-1 .

escape from a typical hard low-mass X-ray binary .

collisions with argon atoms .

X-rays are emitted as they slow down .

Henry Moseley using X-ray spectra .

16 Yes or No, For Vela X-1, the peak emission of the dust emission is co-spatial with the most prominent Hα arc seen in the supposed direction of space motion: it is concluded that the outer shock is radiative, but the inner shock is adiabatic, though some Hα emission possibly related to (part of) the inner termination shock is also detected.

	Yes
	No

17 Complete the text:

Match up the radiation letter with each of the detector possibilities below:

Meteors - A

Cosmic rays - B

Neutrons - C

Protons - D

Electrons - E

Positrons - F

Neutrinos - G

Muons - H

Gamma rays - I

X-rays - J

Ultraviolet rays - K

Optical rays - L

Visual rays - M

Violet rays - N

Blue rays - O

Cyan rays - P

Green rays - Q

Yellow rays - R

Orange rays - S

Red rays - T

Infrared rays - U

Submillimeter rays - V

Radio rays - W

Superluminal rays - X

multialkali (Na-K-Sb-Cs) photocathode materials .

F547M .

511 keV gamma-ray peak .

F675W .

broad-band filter centered at 404 nm .

a cloud chamber .

ring-imaging Cherenkov .

coherers .

effective area is larger by 104 .

F588N .

pyroelectrics .

a blemish about 8,000 km long .

a metal-mesh achromatic half-wave plate .

coated with lithium fluoride over aluminum .

thallium bromide (TlBr) crystals .

F606W .

aluminum nitride .

heavy water .

18 micrometers FWHM at 490 nm .

wide-gap II-VI semiconductor ZnO doped with Co2+ (Zn1-xCoxO) .

a recoiling nucleus

high-purity germanium .

magnetic deflection to separate out incoming ions .

2.2-kilogauss magnet used to sweep out electrons .

18 Yes or No, An X-ray source was observed in the constellation Vela from an attitude-controlled Aerobee 150 rocket launched from the White Sands Missile Range on February 2, 1968. The object, which may be the previously reported Vel XR-1 (Chodil et al. 1967), lies close to the galactic plane; we designate it as GX263+3.

	Yes
	No

19 Which of the following are cold dark matter X-rays?

	expected signal comparable to background
	annihilation radiation
	a pronounced cosmic-ray halo
	difficult to separate from a dark halo
	dwarf spheroidals
	weakly interacting massless particles

20 Yes or No, Actually, according to NASA's Universal coordinate converter, the X-ray source at lII = 263.3°, bII = 2.9° is 5.26° from Vela XR-1 at lII = 259° 08' 33.8", bII = 00 19' 35.7" not about 3°.

	Yes
	No

Hypotheses

Main article: Hypotheses

1. X-rays may hold the key to conversion of electromagnetic radiation back into matter.

See also

• Radiation astrochemistry/Quiz
• Radiation astrogeography/Quiz
• Radiation astrohistory/Quiz
• Radiation astronomy/Quiz
• Theoretical radiation astronomy/Quiz
• Ultraviolet astronomy/Quiz
• X-ray astronomy/Quiz

External links

• International Astronomical Union
• NASA/IPAC Extragalactic Database - NED
• NASA's National Space Science Data Center
• Page views in the past 30 days.
• The SAO/NASA Astrophysics Data System
• SDSS Quick Look tool: SkyServer
• SIMBAD Astronomical Database
• SIMBAD Web interface, Harvard alternate
• Spacecraft Query at NASA
• Universal coordinate converter