Catalogs of Gamma-Ray Bursts

Description: Catalogs of Gamma-Ray Bursts
Number of Questions: 15
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Tags: astronomy astrophysics gamma-ray bursts catalogs
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What is the primary purpose of a catalog of gamma-ray bursts (GRBs)?

  1. To provide a comprehensive list of all known GRBs

  2. To classify GRBs based on their properties

  3. To study the distribution of GRBs in the universe

  4. To investigate the physical mechanisms responsible for GRBs


Correct Option: A
Explanation:

The primary purpose of a GRB catalog is to provide a comprehensive and up-to-date list of all known GRBs, including their basic properties such as time of occurrence, location in the sky, and peak flux.

Which of the following is NOT a commonly used criterion for classifying GRBs?

  1. Duration of the burst

  2. Spectral hardness

  3. Peak luminosity

  4. Redshift of the host galaxy


Correct Option: D
Explanation:

The redshift of the host galaxy is not a commonly used criterion for classifying GRBs, as it is often difficult to determine for distant GRBs.

What is the name of the most comprehensive catalog of GRBs maintained by NASA?

  1. Swift Burst Alert Telescope (BAT) Catalog

  2. Fermi Gamma-ray Burst Monitor (GBM) Catalog

  3. Interplanetary Network (IPN) Catalog

  4. Konus-Wind Catalog


Correct Option: A
Explanation:

The Swift Burst Alert Telescope (BAT) Catalog is the most comprehensive catalog of GRBs maintained by NASA. It contains data from the BAT instrument on board the Swift satellite, which has been observing GRBs since 2004.

Which catalog is known for its focus on long-duration GRBs?

  1. BATSE Catalog

  2. Konus-Wind Catalog

  3. IPN Catalog

  4. GBM Catalog


Correct Option: A
Explanation:

The BATSE Catalog, compiled by the Burst and Transient Source Experiment (BATSE) instrument on board the Compton Gamma-Ray Observatory, is known for its focus on long-duration GRBs.

What is the primary goal of the GCN (Gamma-ray Coordinates Network)?

  1. To rapidly disseminate information about GRBs to the astronomical community

  2. To coordinate observations of GRBs by multiple telescopes

  3. To maintain a comprehensive catalog of GRBs

  4. To study the properties of GRBs in detail


Correct Option: A
Explanation:

The primary goal of the GCN is to rapidly disseminate information about GRBs to the astronomical community, allowing astronomers to promptly follow up on these events with observations using various telescopes.

Which catalog is known for its emphasis on short-duration GRBs?

  1. GBM Catalog

  2. Konus-Wind Catalog

  3. IPN Catalog

  4. BATSE Catalog


Correct Option: A
Explanation:

The GBM Catalog, compiled by the Gamma-ray Burst Monitor (GBM) instrument on board the Fermi Gamma-ray Space Telescope, is known for its emphasis on short-duration GRBs.

What is the approximate number of GRBs detected per year?

  1. 10-20

  2. 100-200

  3. 1000-2000

  4. 10000-20000


Correct Option: C
Explanation:

The approximate number of GRBs detected per year is in the range of 1000-2000, depending on the sensitivity and observational capabilities of the instruments used.

Which catalog is known for its focus on GRBs detected by the Interplanetary Network (IPN)?

  1. BATSE Catalog

  2. Konus-Wind Catalog

  3. IPN Catalog

  4. GBM Catalog


Correct Option: C
Explanation:

The IPN Catalog, compiled by the Interplanetary Network (IPN), is known for its focus on GRBs detected by multiple spacecraft within the IPN.

What is the typical duration of a long-duration GRB?

  1. Less than 2 seconds

  2. 2-10 seconds

  3. 10-100 seconds

  4. More than 100 seconds


Correct Option: C
Explanation:

Long-duration GRBs typically have durations in the range of 10-100 seconds.

Which catalog is known for its focus on GRBs detected by the Konus-Wind instrument?

  1. BATSE Catalog

  2. Konus-Wind Catalog

  3. IPN Catalog

  4. GBM Catalog


Correct Option: B
Explanation:

The Konus-Wind Catalog, compiled by the Konus-Wind instrument on board the Wind spacecraft, is known for its focus on GRBs detected by the Konus-Wind instrument.

What is the typical duration of a short-duration GRB?

  1. Less than 2 seconds

  2. 2-10 seconds

  3. 10-100 seconds

  4. More than 100 seconds


Correct Option: A
Explanation:

Short-duration GRBs typically have durations of less than 2 seconds.

Which catalog is known for its focus on GRBs detected by the Burst and Transient Source Experiment (BATSE)?

  1. BATSE Catalog

  2. Konus-Wind Catalog

  3. IPN Catalog

  4. GBM Catalog


Correct Option: A
Explanation:

The BATSE Catalog, compiled by the Burst and Transient Source Experiment (BATSE) instrument on board the Compton Gamma-Ray Observatory, is known for its focus on GRBs detected by the BATSE instrument.

What is the approximate redshift range of GRBs?

  1. 0-1

  2. 1-2

  3. 2-3

  4. 3-4


Correct Option:
Explanation:

The approximate redshift range of GRBs is 0-4, indicating that they can occur at various distances from Earth.

Which catalog is known for its focus on GRBs detected by the Fermi Gamma-ray Burst Monitor (GBM)?

  1. BATSE Catalog

  2. Konus-Wind Catalog

  3. IPN Catalog

  4. GBM Catalog


Correct Option: D
Explanation:

The GBM Catalog, compiled by the Fermi Gamma-ray Burst Monitor (GBM) instrument on board the Fermi Gamma-ray Space Telescope, is known for its focus on GRBs detected by the GBM instrument.

What is the typical peak luminosity of a GRB?

  1. 10^46 erg/s

  2. 10^48 erg/s

  3. 10^50 erg/s

  4. 10^52 erg/s


Correct Option: D
Explanation:

The typical peak luminosity of a GRB is around 10^52 erg/s, making them among the most luminous objects in the universe.

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