P-Pdot Diagram
Period vs period derivative for pulsars, magnetars, the Magnificent Seven and CCOs. Accreting neutron stars in X-ray binaries are not plotted, since their spin evolution is driven by accretion and no Ṗ is listed for them. Isolines show constant magnetic field strength (B) and characteristic age (τ). The death line marks the theoretical boundary below which radio emission ceases.
Catalogs
Isolines B
Isolines τ
Death line
ATNF pulsars
McGill magnetars
Magnificent Seven
CCOs
B = 10^12 G
B = 10^14 G
B = 10^15 G
τ = 10^3 yr
τ = 10^6 yr
τ = 10^9 yr
Death line
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Galactic Heatmap
Top-down view of neutron star positions projected onto the Galactic plane (x/y). The Sun is located at x = -8.122 kpc. Concentration near the Sun reflects detection bias — closer objects are easier to observe. KDE mode uses Gaussian kernel density estimation with Silverman bandwidth — may take a few seconds for large datasets.
Display mode
Object types
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Nearest Neighbor
Select an object and find its K nearest neighbors in 3D Galactocentric space (Euclidean distance in x, y, z). Lines connect the selected object to each neighbor.
Object
K neighbors: 5
| Name | Type | Distance (kpc) | 3D dist (kpc) |
|---|
Clustering (DBSCAN)
Density-based clustering of neutron stars in 3D Galactocentric coordinates. Adjust eps (neighborhood radius) and min_samples (minimum cluster size). Noise points are shown in gray.
eps (kpc): 1.0
min_samples: 5
Projection
Line of Sight
Enter equatorial coordinates (RA, Dec) and an angular search radius. Shows all objects within that cone and a histogram of their distances along the line of sight.
RA (deg)
Dec (deg)
Radius (deg): 5.0
| Name | Type | Sep (deg) | Dist (kpc) |
|---|