= PSR B1913+16
{c}
{wiki=Hulse–Taylor_pulsar}
= Hulse-Taylor pulsar
{c}
{synonym}
= PSR 1913+16
{c}
{synonym}
<Russell Alan Hulse> and <Joseph Hooton Taylor Jr.> discovered this <binary pulsar> at Arecibo in 1974; their January 1975 paper reports a roughly $59\,\mathrm{ms}$ pulse <period> and $7.75\,\mathrm{h}$ <orbital period>. Its unseen companion was not detected as a second <radio pulsar>. Discovery of the <orbit> preceded the later <binary-pulsar orbital decay> test.<Discovery of a Pulsar in a Binary System by Russell Alan Hulse and Joseph Hooton Taylor Jr.>[Discovery of a Pulsar in a Binary System, 15 January 1975, L51 opening and section II; L53 section IV]{ref}
The 1993 <Nobel Prize in Physics> recognized the discovery.<All Nobel Prizes in Physics by Nobel Prize Outreach>[1993 entry, joint award and discovery motivation]{ref}
By 1993, the system was interpreted as a pair of <neutron stars>.<Binary Pulsars and Relativistic Gravity by Joseph Hooton Taylor Jr.>[Section IV, p. 83, Figure 7]{ref}
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