The code refers to a specific astronomical observation of a Quasar , a celestial object powered by a supermassive black hole at the center of a distant galaxy [1, 3].
The SDSS uses a dedicated 2.5-meter telescope at Apache Point Observatory in New Mexico to map the universe [2, 5]. By cataloging objects like 357959_5727-5712, astronomers can: 357959_5727-5712
At first glance, "357959_5727-5712" looks like a random string of numbers, but in the world of astrophysics, it is a coordinate-based name for a powerhouse of energy [1, 3]. Quasars (quasi-stellar radio sources) are among the brightest and most distant objects in the known universe [4]. 1. What Exactly Is It? The code refers to a specific astronomical observation
: Use quasars as "backlights" to study the intergalactic gas between us and the source [8]. 3. The Science Behind the String : Use quasars as "backlights" to study the
The numbers in the name typically correspond to the specific , MJD (Modified Julian Date) , and Fiber ID used during the SDSS observation [9, 10]:
: The physical metal plate used to hold optical fibers in the telescope. MJD : The date the observation took place.
: The specific optical fiber that captured the light from this exact point in the sky. Why Should We Care?