SN 2008D

Supernova
name = SN 2008D


caption= X-ray (left) and visible light (right) images of SN 2008D.
type = Ibc
epoch = J2000
SNRtype =
host = NGC 2770
constellation = Lynx
ra = RA|09|09|30.55
dec = DEC|33|08|20.81
gal =
discovery = January 9, 2008
iauc =
mag_v =
distance = convert|27|Mpc|Mly|abbr=on|lk=on
progenitor = Unknown
progenitor_type = Unknown
b-v = Unknown
notes = First supernova detected by the X-rays released very early on in its formation.

SN 2008D is a supernova detected with NASA's "Swift" X-ray telescope. The explosion of the supernova precursor star, in the spiral galaxy NGC 2770 (88 million light years away (27 Mpc)), was detected on January 9, 2008, by Carnegie-Princeton fellows Alicia Soderberg and Edo Berger, and Albert Kong and Tom Maccarone independently using Swift. citation
last1 = Soderberg
first1 = Alicia
authorlink1 = Alicia Soderberg
last2 = Berger
first2 = Edo
last3 = Page
first3 = K. L.
last4 = Schady
first4 = P.
last5 = Parrent
first5 = J.
last6 = Pooley
first6 = D.
last7 = Wang
first7 = X.-Y.
last8 = Ofek
first8 = E. O.
last9 = Cucchiara
first9 = A.
last10 = Rau
first10 = A.
year = 2008
date = May 22 2008
title = An extremely luminous X-ray outburst at the birth of a supernova
journal = Nature
volume = 453
issue = 7194
pages = 469–474
doi = 10.1038/nature06997
url = http://arxiv.org/abs/0802.1712
accessdate =
quote =] They alerted eight other orbiting and ground-based observatories to record the event. This was the first time that astronomers have ever observed a supernova as it occurred.

The supernova was determined to be of Type Ibc. The velocities measured from SN2008D indicated expansion rates of more than 10,000 kilometers per second. The explosion was off-center, with gas on one side of the explosion moving outward faster than on the other. This was the first time the X-ray emission pattern of a supernova (which only lasted about five minutes) was captured at the moment of its birth. Now that it is known what X-ray pattern to look for, the next generation of X-ray satellites is expected to find hundreds of supernovae every year exactly when they explode, which will allow searches for neutrino and gravitational wave bursts that are predicted to accompany the collapse of stellar cores and the birth of neutron stars.

"Supernovae are the explosions of massive stars—stars more than 8 times the mass of the Sun—whose cores run out of nuclear fuel and collapse in on themselves to form a neutron star or a black hole. In the process they launch a powerful shock wave that blows up the star. Until now, observations of these objects have been of the aftermath, typically several days after the initial explosion." [ [http://esciencenews.com/articles/2008/05/21/supernova.birth.seen.first.time Supernova birth seen for first time] ] [ [http://www.badastronomy.com/bablog/2008/05/21/birth-cry-of-a-supernova/ Birth cry of a supernova] ] [Reuters, [http://news.yahoo.com/s/nm/20080521/sc_nm/supernova_dc Supernova caught exploding on camera] , 21 May 2008]

References