SN 2008D

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title: "SN 2008D" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["astronomical-objects-discovered-in-2008", "supernovae", "lynx-(constellation)"] topic_path: "general/astronomical-objects-discovered-in-2008" source: "https://en.wikipedia.org/wiki/SN_2008D" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

| name = SN 2008D | image = [[File:Sn2008hdani.gif|250px]] | caption= X-ray (left) and visible light (right) images of SN 2008D (1), and SN 2007uy (2). | type = Ibc | epoch = J2000 | SNRtype = | host = NGC 2770 | constellation = Lynx | ra = | dec = | gal = 191.5472 +42.1883 | discovery = January 9, 2008 | iauc = | mag_v = | distance = 27 Mpc | progenitor = Unknown | progenitor_type = Unknown | b-v = Unknown | notes = First supernova detected by the X-rays released very early on in its formation. ::figure[src="https://upload.wikimedia.org/wikipedia/commons/4/43/211875main2_beflabelsnova_20080213_350px.jpg" caption="SWIFT images galaxy NGC 2770 with [[SN 2007uy]] before SN 2008D, with X-ray view (left) and visible light (right)."] ::

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 | last2 = Berger | first2 = Edo | last3 = Page | first3 = K. L. | last4 = Schady | first4 = P.|author4-link= Patricia Schady | 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. | last11 = Waxman | first11 = E. | last12 = Simon | first12 = J. D. | last13 = Bock | first13 = D. C.-J. | last14 = Milne | first14 = P. A. | last15 = Page | first15 = M. J. | last16 = Barentine | first16 = J. C. | last17 = Barthelmy | first17 = S. D. | last18 = Beardmore | first18 = A. P. | last19 = Bietenholz | first19 = M. F. | last20 = Brown | first20 = P. | last21 = Burrows | first21 = A. | last22 = Burrows | first22 = D. N. | last23 = Byrngelson | first23 = G. | last24 = Cenko | first24 = S. B. | last25 = Chandra | first25 = P. | last26 = Cummings | first26 = J. R. | last27 = Fox | first27 = D. B. | last28 = Gal-Yam | first28 = A. | last29 = Gehrels | first29 = N. | last30 = Immler | first30 = S. | year = 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 | arxiv = 0802.1712 | pmid = 18497815 | bibcode = 2008Natur.453..469S | s2cid = 453215 | display-authors = 8

::figure[src="https://upload.wikimedia.org/wikipedia/commons/0/0d/SN2008DLightCurve.png" caption="arxiv=0805.1188 }}"] ::

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.

References

References

  1. "SN 2008D: First Supernova Observed Live".
  2. (21 May 2008). "Supernova Birth Seen For First Time".
  3. (21 May 2008). "Birth cry of a supernova". Discover Magazine.
  4. (February 2009). "Early Spectroscopic Identification of SN 2008D". The Astrophysical Journal Letters.

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