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Origins of Life on Earth : Supernova Events associated with Neutron Stars/Black Holes and the Spreading of Life
 

Pulsars are neutron star remants of prior massive stars that have gone supernova. Some of the 250 known galactic supernova remnant shells have been associated specific pulsars however many 1:1 associations remain to be be identifed.


Galactic Pulsar Databases ( 700 )
1. ATNF Pulsar Catalogue
2. Jodrell Bank Observatory
3. Princeton Pulsar Database
4. 170 Possible Gamma Ray Pulsars in unidentified EGRET Objects

 

Galactic Supernova Remnants Lists
1. - 231 from ASCA
2. List from Chandra
3. 450 SNR candidates from ROSAT

 


Table 2 - Historical Galactic Supernovae
(data from various sources including Michael Richmond's " Information on the Historical Supernovae" and Strom (1994))

 
Year
Peak Magnitude
Constellation
Distance (light years)
10 Ma
(20 Supernova Events predicted from the Scorpius Centaurus OB Association over the past 10 million years ) 		     
2-3 Ma Nearby Supernova Event leaving a deposit layer of Iron-60 Isotope and causing a minor marine extinction event.      
400 Ka RXJ1856.5-3754 Neutron Star Remnant of explosion   Upper Sco OB  
300-100 Ka Geminga Supernova and Pulsar cosmic ray shock wave 35 Ka      

30 Galactic Pulsars identified with ages less than 100K yrs old.

      
Vela X Supernova remnant and Vela Pulsar - 10,000 yrs ago   Vela 1,500
Vela Jr. Supernova Remnant ? 6000 yrs ago   Vela 815
1200 BC      
A.D. 185 Possible recording in chinese records
-6
Centaurus
4,500
386
-3
Scorpius
16,300
393 Possbile recording in chinese records      
1006
-10
Lupus
4,600
1054 July 4th. Guest star recorded by chinese
-6
Taurus
6,500
1181 seen and identified in south pole ice core nitrate concentrations
-1
Cassiopeia
8,500
1320 identified on ROSAT images of Type II SNR and ice cores nitrates ?Vela Jr.     640
1572 Tycho Brahe's Star (also in south pole ice core nitrate concentrations)
-4
Cassiopeia
10,000
1604 or 1602 Kepler's Star (also in south pole ice core nitrate concentrations)
-3
Ophiuchus
14,300
1671
6?
Cassiopeia
9,100