An ancient curse aimed at a thief is one of a number of treasures to be unveiled to the public for the first time, following the largest archaeological excavation the city of Leicester has ever seen.

Over the past three years, a team of up to 60 archaeologists from University of Leicester Archaeological Services has been working on a number of sites in the city. Almost 9% of Leicester’s historic core has been subject to investigation in some form, giving new insights into the appearance and development of the Roman and medieval towns.

One of the most interesting finds from a site on Vine Street was a ‘curse’ tablet – a sheet of lead inscribed in the second or third century AD and intended to invoke the assistance of a chosen god. It has been translated by a specialist at Oxford University, and reads:

‘To the god Maglus, I give the wrongdoer who stole the cloak of Servandus. Silvester, Riomandus (etc.) … that he destroy him before the ninth day, the person who stole the cloak of Servandus…’ Then follows a list of the names of 18 or 19 suspects. What happened to them is not recorded.

Before the discovery of this object, archaeologists only knew of the names of three or four of the inhabitants of Roman Leicester, so the find is of great significance.

(more…)

November 30th, 2006 | General Science | No comments

Scientists using NASA’s Swift satellite stumbled upon a rare sight: two supernovas side by side in one galaxy. Large galaxies typically play host to three supernovas per century. Galaxy NGC 1316 has had two supernovas in less than five months, and a total of four supernova in 26 years, as far back as the records go. This makes NGC 1316 the most prodigious known producer of supernovas.

The first supernova, still visible on the “right” in the image, was detected on June 19, 2006, and was named SN 2006dd. The second supernova, on the immediate “left” in the image, was detected on November 5 and has been named SN 2006mr. (Other objects in the image include a central bright spot, whic is the galaxy core, and a bright object to the far left, like an earring, which is a foreground star.)

NGC 1316, a massive elliptical galaxy about 80 million light years way, has recently merged with a spiral galaxy. Mergers do indeed spawn supernovas by forcing the creation of new, massive stars, which quickly die and explode. Yet all four supernovas in NGC 1316 appear to be Type Ia, a variety previously not associated with galaxy mergers and massive star formation. Scientists are intrigued and are investigating whether the high supernova rate is a coincidence or a result of the merger. Swift was launched on this date, November 20, in 2004.

Swift was launched in November 2004 and was fully operational by January 2005. Swift carries three main instruments: the Burst Alert Telescope, the X-ray Telescope, and the Ultraviolet/Optical Telescope. Swift’s gamma-ray detector, the Burst Alert Telescope, provides the rapid initial location and was built primarily by the NASA Goddard Space Flight Center in Greenbelt and Los Alamos National Laboratory and constructed at GSFC. Swift’s X-Ray Telescope and UV/Optical Telescope were developed and built by international teams led by Penn State and drew heavily on each institution’s experience with previous space missions. The X-ray Telescope resulted from Penn State’s collaboration with the University of Leicester in England and the Brera Astronomical Observatory in Italy. The Ultraviolet/Optical Telescope resulted from Penn State’s collaboration with the Mullard Space Science Laboratory of the University College-London.

Source: Eberly College of Science.

November 20th, 2006 | Space | No comments