Special Astrophysics Seminar - What XMM X-ray and Arecibo Radio Observations of Pulsar B0823+26 Have to Teach Us

Joanna Rankin (University of Vermont)

Sep 13, 2018 3:30 PM
Location: MSI Conference Room (3550 University)
Special Astrophysics Seminar

Title: What XMM X-ray and Arecibo Radio Observations of Pulsar B0823+26 Have to Teach Us

Abstract: Pulsar B0823+26 was shown recently (Sobey et al. 2015) to assume a quiet emission mode about 100 times weaker than its usual bright mode during about 15% of the time. Simultaneous radio/X-ray observations (Hermsen et al. 2018) then showed a hot polar cap during the bright mode that nearly disappeared in the weak mode. B0823+26 is a nearly orthogonal two-pole interpulsar (with a further postcursor feature), and its PPA traverse allows us to model its sightline geometry accurately. The pulsar’s profile forms and single-pulse dynamics change drastically between its bright and weak modes, suggesting that different pair-plasma source mechanisms may predominate in the two modes as well as different radio emission-beam configurations. We will summarize what sensitive Arecibo radio observations show us about the pulsar’s emission in its two modes and attempt to interpret these effects in terms of the pulsar’s radio/X-ray behavior.


More about Joanna Rankin ⇒


Upcoming Events

Reality Check: The Perils and Promise of Observations to Characterize Small Exoplanets

Johanna Teske (Carnegie Institute for Science)

Apr 2, 2024 3:30 PM
Seminar Event
Read More ⇒

APIERY Discussion

Apr 3, 2024 2:00 PM
Location: TSI Lounge
Other Event
Read More ⇒

Astro-ph discussion

Apr 3, 2024 3:30 PM
Other Event
Read More ⇒

TSI Eclipse Fair and Viewing Party

Apr 8, 2024 1:00 PM to 4:30 PM
Location: McGill Campus, Lower Field
Public Outreach
Read More ⇒

TSI Seminar

Vikram Ravi (Caltech)

Apr 9, 2024 3:30 PM
Seminar Event
Read More ⇒

APIERY Discussion

Apr 10, 2024 2:00 PM
Location: TSI Lounge
Other Event
Read More ⇒

Astro-ph discussion

Apr 10, 2024 3:30 PM
Other Event
Read More ⇒

TSI Seminar

Christine Chen (Space Telescope Science Institute)

Apr 16, 2024 3:30 PM
Seminar Event
Read More ⇒

APIERY Discussion

Apr 17, 2024 2:00 PM
Location: TSI Lounge
Other Event
Read More ⇒

Astro-ph discussion

Apr 17, 2024 3:30 PM
Other Event
Read More ⇒

TSI Seminar

Miles Cranmer (Cambridge and Simons Foundation)

Apr 23, 2024 3:30 PM
Seminar Event
Read More ⇒

APIERY Discussion

Apr 24, 2024 2:00 PM
Location: TSI Lounge
Other Event
Read More ⇒

Astro-ph discussion

Apr 24, 2024 3:30 PM
Other Event
Read More ⇒

TSI Seminar

Sunshine Menezes (Executive Director at Metcalf Institute)

Apr 30, 2024 3:30 PM
Seminar Event
Read More ⇒

Public Observing Night

Apr 30, 2024 7:30 PM
Outreach Event
Read More ⇒

APIERY Discussion

May 1, 2024 2:00 PM
Location: TSI Lounge
Other Event
Read More ⇒

Astro-ph discussion

May 1, 2024 3:30 PM
Other Event
Read More ⇒

TSI Public Talk

May 1, 2024 7:00 PM
Outreach Event
Read More ⇒

24hrs of Science - From Planets to Particles: An Exploration Mini-Fair

May 4, 2024 10:00 AM to 4:00 PM
Location: Rutherford Physics Building
Outreach Event
Read More ⇒

24 Hours of Science

May 4, 2024 11:00 AM
Outreach Event
Read More ⇒