Главная
Study mode:
on
1
The First Millisecond Pulsar
2
The dog that did not bark!
3
But there was absolutely no nebulosity in radio or optical or x-ray!
4
Curious coincidence once again!
5
A bold conjecture!
6
Evolution of Pulsars
7
Recycled Pulsars
8
Hulse-Taylor Binary Pulsar
9
The Hulse-Taylor Binary Pulsar
10
Agatha Christie
11
Reincarnation of Pulsars
12
Spinning up a Neutron Star in a Binary System
13
What will be its period after the spin up phase is over?
14
The Equilibrium Period
15
Accretion disk
16
PSR 1913+16 must be a recycled pulsar
17
The Equilibrium Period
18
Question: For a given magnetic field, can we spin up a neutron star to arbitrarily small period?
19
Eddington Luminosity Limit
20
Eddington Limit for the Accretion Rate
21
The Minimum Equilibrium Period
22
The Hulse-Taylor Binary Pulsar
23
Predictions made by GS & van den Heuvel 1978,80
24
The 'second born' neutron star will be like any other 'ordinary' pulsar:
25
Predictions made in 1980
26
Astronomer's reaction !
27
The Double Pulsar: an odd couple!
28
Prediction made in 1980 confirmed
29
The First Millisecond Pulsar
30
A bold conjecture!
31
Recycled Pulsars
32
The solitary millisecond pulsar
33
The Millisecond Pulsar
34
The progenitors of millisecond pulsars
35
But where is the Companion !
36
The Population of ms-Pulsars
37
The Moral of Millisecond Pulsars
38
The large population of millisecond pulsars clearly tells us that the magnetic field of millisecond pulsars do not decay further.
39
Predictions made in 1986
40
Thirty years later
41
The missing companion of the solitary millisecond pulsar
42
Evolution of the Magnetic Field of Neutron Stars.
43
Any viable theory of field evolution must explain the following questions.
44
Origin of magnetic field of neutron stars
45
Field decay in Neutron Stars
46
Superfluid core
47
Type II superconductivity in the core
48
Type II Proton Superconductivity in the core
49
"Vortices" to the rescue!
50
Two types of "Spaghettis" in the core:
51
The inter-pinning of the fluxoids and vortices
52
Main results and predictions
53
Status of the predictions made in 1990
54
The skeptics:
55
The final nail in the coffin!
56
2000: X-ray binary & 2009: radio millisecond pulsar
57
PSR J1023+0038 - The missing link
58
Yet Another Puzzle of the 1980s
59
COS-B map of the galactic plane
60
The Puzzle
61
Is there a Puzzle?
62
A Prediction made in 1988
63
The high latitude emission may appear "Diffuse" because of the poor angular resolution of the telescope.
64
Twenty one years after this prediction was made. ...
65
"A population of Gamma-Ray Millisecond Pulsars Seen with the Fermi Large Area Telescope"
66
Millisecond Pulsars: A New Population of Gamma Ray Sources
67
Fermi Lat has detected gamma ray emission from nearly 100 millisecond pulsars
68
Gravitational radiation from ms-PSRs
69
Atomic Clocks and Millisecond Pulsars
70
ms-PSRs and Atomic Clocks
71
ms-PSRs as gravitational wave detectors
72
Pulsar Timing
73
Pulsar Timing Array
74
The trumpets shall sound, and the dead shall be raised incorruptible.
75
Q&A
Description:
Explore the fascinating world of millisecond pulsars in this comprehensive 2-hour 15-minute lecture by Professor G Srinivasan. Delve into the discovery and evolution of these rapidly rotating neutron stars, their role in binary systems, and their importance in astrophysics. Learn about recycled pulsars, the Hulse-Taylor binary pulsar, and the concept of spin-up in neutron stars. Examine the Eddington luminosity limit, equilibrium periods, and the population of millisecond pulsars. Investigate the evolution of magnetic fields in neutron stars, including superfluid cores and type II superconductivity. Discover the connection between millisecond pulsars and gamma-ray sources, and their potential as gravitational wave detectors. Gain insights into pulsar timing arrays and their significance in modern astrophysics. This lecture, part of a summer course on astrophysics, offers a deep dive into the physics and astronomy of these remarkable cosmic objects.

Millisecond Pulsars by Professor G Srinivasan

International Centre for Theoretical Sciences
Add to list
#Science #Astronomy #Neutron Stars #Astrophysics #Physics #Gravitational Physics #Gravitational Wave Detection #Accretion Disks
1 of 75

The First Millisecond Pulsar