News / ASTRONOMY ARTICLES

cover_thumb

Newsletter Feb 2016

News from the SALT operations team   Latest news items include info on the completed HRS pipeline, results from the SALT survey and feedback from the SALT data reduction workshop: salt_newsletter_feb2017

elias_thumb

An unusual nova, possibly in Sagittarius

An unusual nova possibly associated with the Sagittarius stream   Novae are stellar explosions that take place in binary stellar systems. During these explosions, the star’s brightness increases by many orders of magnitude, and then fades to its initial brightness, and the system survives the explosion. A team of SAAO astronomers led by an SAAO […]

DEML241_SNR.rgb_thumb

Supernovae & their remnants

Supernovae & their remnants   A bright Supernova (SN) candidate was detected by an automated SN survey called ASAS-SN using a small automated telescope in Chile in the morning of Sep 21st.  The new source was in a galaxy NGC 613, a barred spiral galaxy some 70 million light years away in the constellation of […]

cover2_thumb

Newsletter Oct 2016

News from the SALT operations team Highlights include some great news from the August stand-down period and from our new edge-sensor system: salt_newsletter_oct2016

salt_status_thumb2

Newsletter May 2016

News from the SALT operations team   Check out what we were getting up to at SALT earlier this year: salt_newsletter_may2016

CenA-SN.gri.cover

SN2016adj: Supernova in Centaurus A

Death of a star: Supernova in Centaurus A A supernova, a star that just ended its life in an explosion, was discovered yesterday (Feb 8, 2016) in a nearby galaxy known as Centaurus A.  The galaxy is well known for its peculiar and prominent dust lane and for it hosting one of the closest active […]

sams1_cover

SAMS Project

SAMS Project What does SAMS mean? SAMS is an acronym for the SALT Array Management System. It comprises a set of sensors mounted on the mirror segments connected to racks of electronics  feeding data to a Labview program that is designed to maintain the overall shape of the SALT mirror array once it has been […]

hannes_cover

QPOs with a pinch of SALT

What is accretion? The broadest description of accretion is this: Material falls onto an object. But of course, if that were the full story, throngs of astronomers would be jobless! Accretion occurs in a diverse variety of astrophysical objects, from the supermassive black holes at the centres of galaxies, billions of times more massive than […]

comb_cover

Laser Frequency Comb

Laser Frequency Comb HRS is the High Resolution Spectrograph used at SALT. It can observe faint objects with extremely high accuracy, and thus can be used for most, if not all, kinds of astronomical research. As for all astronomical instruments (and in fact for all scientific equipment!), there are many steps required to go from […]

sauron_cover

ESO474-G040: (not) The Eye of Sauron

ESO474-G040: Not “the Eye of Sauron”, but still a fascinating galaxy “Two Russians, a Finn, and a Jew come into a bar” seems like the beginning of a joke. In fact, it is really “two South Africans, a Russian and an Israeli go into the SALT dome”, and this is not a joke. Observations performed […]