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Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
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Near absolute zero temperatures, in the presence of a magnetic field, the majority of nuclei prefer the lower energy spin-up state to the higher energy spin-down state. As temperatures increase, the energy from thermal collisions distributes the spins more equally between the two states. The Boltzmann distribution equation gives the ratio of the number of spins predicted in the spin −½ (N−) and spin +½ (N+) states.
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Area of Science:

  • Astronomy
  • Astrophysics
  • X-ray Astronomy

Background:

  • Supernovae (SNe) are crucial cosmic events.
  • X-ray observations provide vital data on supernova remnants and evolution.
  • Publicly accessible data facilitates scientific collaboration and discovery.

Purpose of the Study:

  • To announce the recent updates and long-term stability of the Supernova X-ray Database (SNaX).
  • To encourage astronomers to continue using and contributing to the SNaX resource.

Main Methods:

  • The Supernova X-ray Database (SNaX) has been updated to PHP7.
  • Security enhancements and migration to a new server have been implemented.
  • Data contribution is facilitated through an easily fillable spreadsheet.

Main Results:

  • SNaX now ensures long-term stability and enhanced security.
  • The database provides a publicly available, searchable web interface for X-ray data on supernovae.
  • Updated infrastructure guarantees reliable access for the astronomical community.

Conclusions:

  • The updated SNaX database is a stable and secure platform for supernova X-ray data.
  • Continued user engagement and data contributions are vital for the database's growth and utility.
  • Astronomers are urged to leverage SNaX for their research and to share their findings.