| Ben Stappers | Pulsar radio emission: overview of observational status | 9:30a |
| Matthew Baring | Theoretical Perspectives on Non-Thermal Pulsar Emission | 10:00a |
| Willem Hermsen | Non-thermal high-energy emission from radio pulsars: observational status prior to the GLAST era. | 10:30a |
| Vyacheslav Zavlin | Pulsar high-energy emission: soft X-rays | 11:30a |
| Alberto Pellizzoni | Recent pulsar results from AGILE | 12:00p |
| Rene Breton | New Test of Gravity Using Eclipses in the Double Pulsar PSR J0737-3039A/B | 12:30p |
| Alice Harding | Multiwavelength Emission From Pulsar Slot Gaps | 12:45p |
| Maxim Lyutikov | Crab giant pulses at sub-nanosecond resolution: quantitative model of non-trivial spectrum | 2:00p |
| Jason Hessels | Uncovering the population of nearby neutron stars at low radio frequencies | 2:15p |
| Yuri Lyubarsky | Theoretical overview of magnetars | 2:30p |
| Fotis Gavriil | Review of Magnetar X-ray Observations | 3:00p |
| Diego Götz | INTEGRAL and Magnetars: a hard X-ray approach to extreme neutron stars | 5:00p |
| Peter Den Hartog | Different spectral components revealed in the high-energy pulse profiles of Anomalous X-ray Pulsars | 5:30p |
| Joseph Gelfand | Radio Emission from the Magnetar SGR 1806-20 Giant Flare | 5:45p |
| David Eichler | A model for the large amplitude QPO luminosity variation in the tail of SGR giant flares | 6:00p |
| Andreas Reisenegger | Neutron star magnetic fields: a theoretical perspective | 6:15p |
Wednesday, July 16, 2008
Coming Talks: Thursday, July 17
Talks scheduled for July 17th (times are Eastern Daylight Time):
In Montreal: Fantasia Film Festival
For those looking for something to do in the evenings, I highly recommend the Fantasia Film Festival, which is currently happening in and around Concordia University in the downtown area. This is Montreal's premiere alternative film festival. Sunday night I saw "Be a Man! Samurai School" (a comedy?), and I can definitely recommend it. The director was on hand and gave us an impressive martial arts display.
Tuesday, July 15, 2008
At COSPAR: About E15 (tuesday morning)
During the first talk this morning, S. Bhattacharya claimed that the spin frequency of NS must be measured simultaneously with the radius and the mass in order to constrain the EoS. Does anyone has a comment about that ? Is it really crucial to measure the spin frequency ?
Another comment that I would like to make concerns a question following the talk by R. Wijnands. He expressed doubts about the qLMXBs nature of those objects detected in GC since they have been observed in outbursts. I find it a quite interesting opinion, however, I don't think that we should exclude those objects from being quiescent accreting neutron stars. Only a few qLMXBs are known in globular clusters and for a several years only. The quiescent period can last more than 10 years in some cases of known field qLMXBs therefore I believe that time will tell whether or not they are transient objects and if they will go through an outburst stage.
Another comment that I would like to make concerns a question following the talk by R. Wijnands. He expressed doubts about the qLMXBs nature of those objects detected in GC since they have been observed in outbursts. I find it a quite interesting opinion, however, I don't think that we should exclude those objects from being quiescent accreting neutron stars. Only a few qLMXBs are known in globular clusters and for a several years only. The quiescent period can last more than 10 years in some cases of known field qLMXBs therefore I believe that time will tell whether or not they are transient objects and if they will go through an outburst stage.
Monday, July 14, 2008
At COSPAR: EoS Introduction (E15)
Here is a quick summary of this morning's session.
Peter Jonker presented how to observationally constrain the EoS of neutron stars and also talked about the cooling of neutron stars. He briefly mentioned the upcoming Galactic Belt Survey, a series of observation with Chandra covering a total of 6x1 arcmin in order to find more X-ray transient near the galactic plane. Overall, I found that it was an excellent presentation outlining the crucial points of LMXBs observations and quoting several well-known objects like 4U 1608-52, Cen X-4, the long duration transient KS 1731-260, or the very faint transient SAX J1808.4-3657.
This was then followed by a talk by Pawel Haensel presenting the theory behind all this. As accreting matter compresses the inner crust, material gets out of equilibrium and electron capture/neutron emission occur, releasing 1.5-2 MeV per accreted nucleon. He also talked about the timescales involved.
Finally, Nathalie Degenaar gave a very interesting talk about very faint X-ray transients with outburst luminosities as low as 10^34 erg/s. In two case, a faint burst was happening followed by a Type 1 X-ray burst suggesting right away that this small burst could be a precursor to the Type 1 burst.
Tomorrow's half day session will be fully dedicated to the methods of constraining the EoS using accreting neutron stars. I am looking forward to the presentation by R. Wijnands, N. Webb, and P. Ray.
Peter Jonker presented how to observationally constrain the EoS of neutron stars and also talked about the cooling of neutron stars. He briefly mentioned the upcoming Galactic Belt Survey, a series of observation with Chandra covering a total of 6x1 arcmin in order to find more X-ray transient near the galactic plane. Overall, I found that it was an excellent presentation outlining the crucial points of LMXBs observations and quoting several well-known objects like 4U 1608-52, Cen X-4, the long duration transient KS 1731-260, or the very faint transient SAX J1808.4-3657.
This was then followed by a talk by Pawel Haensel presenting the theory behind all this. As accreting matter compresses the inner crust, material gets out of equilibrium and electron capture/neutron emission occur, releasing 1.5-2 MeV per accreted nucleon. He also talked about the timescales involved.
Finally, Nathalie Degenaar gave a very interesting talk about very faint X-ray transients with outburst luminosities as low as 10^34 erg/s. In two case, a faint burst was happening followed by a Type 1 X-ray burst suggesting right away that this small burst could be a precursor to the Type 1 burst.
Tomorrow's half day session will be fully dedicated to the methods of constraining the EoS using accreting neutron stars. I am looking forward to the presentation by R. Wijnands, N. Webb, and P. Ray.
Thursday, July 10, 2008
Welcome!
Welcome to the blog for:
Astrophysical Studies of Neutron Stars from Multiwavelengths Observations
COSPAR 2008, Session E11
Thursday July 17 - Saturday July 19
Montreal, Canada
In recent years, we have seen tremendous progress in the field of neutron star research, primarily enabled by multi-wavelength timing, imaging and spectroscopic observations with both ground and space-based observatories. Along with ground-based radio, optical and infra-red telescopes, an array of X-ray and Gamma ray observatories -- such as RXTE, INTEGRAL, Chandra, XMM-Newton and SWIFT -- with broad ranging timing, spectral and imaging capabilities has opened a new era of multi-wavelength investigations. Multi-wavelength observations of the different manifestations of neutron stars like radio pulsars, magnetars, isolated neutron stars etc. offer the opportunity to investigate a wide range of astrophysical problems including the extremes of gravity, density and magnetic field. At the COSPAR assembly in Montreal, 2008, we will have an opportunity to bring together researchers from diverse fields and gauge direction of future neutron star research with existing and coming observatories, such as GLAST and ASTROSAT.
With our intrepid team of live-bloggers, we'll be bringing you the short story on talks given during the E11 sessions, looks forward towards coming sessions, hold discussions on topics needing clarity, and provide useful local information for those who are physically in Montreal for the meeting.
Look for the science talk live-blogging -- short descriptions of science talks given during the E11 sessions, posted immediately after the talks themselves. This is a great place to make comments, particularly if you are not in Montreal for the conference.
Watch for "In Montreal" -- postings about goings-on in the city while COSPAR is in session.
And our "At COSPAR" postings will focus on events which will be of special interest to readers of this blog, especially regarding neutron stars outside the E11 scientific session.
Astrophysical Studies of Neutron Stars from Multiwavelengths Observations
COSPAR 2008, Session E11
Thursday July 17 - Saturday July 19
Montreal, Canada
In recent years, we have seen tremendous progress in the field of neutron star research, primarily enabled by multi-wavelength timing, imaging and spectroscopic observations with both ground and space-based observatories. Along with ground-based radio, optical and infra-red telescopes, an array of X-ray and Gamma ray observatories -- such as RXTE, INTEGRAL, Chandra, XMM-Newton and SWIFT -- with broad ranging timing, spectral and imaging capabilities has opened a new era of multi-wavelength investigations. Multi-wavelength observations of the different manifestations of neutron stars like radio pulsars, magnetars, isolated neutron stars etc. offer the opportunity to investigate a wide range of astrophysical problems including the extremes of gravity, density and magnetic field. At the COSPAR assembly in Montreal, 2008, we will have an opportunity to bring together researchers from diverse fields and gauge direction of future neutron star research with existing and coming observatories, such as GLAST and ASTROSAT.
With our intrepid team of live-bloggers, we'll be bringing you the short story on talks given during the E11 sessions, looks forward towards coming sessions, hold discussions on topics needing clarity, and provide useful local information for those who are physically in Montreal for the meeting.
Look for the science talk live-blogging -- short descriptions of science talks given during the E11 sessions, posted immediately after the talks themselves. This is a great place to make comments, particularly if you are not in Montreal for the conference.
Watch for "In Montreal" -- postings about goings-on in the city while COSPAR is in session.
And our "At COSPAR" postings will focus on events which will be of special interest to readers of this blog, especially regarding neutron stars outside the E11 scientific session.
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