2024-10-15

[jcjiang-dev]

Below is a list of papers I've read over the past few weeks. A "quick read" means I reviewed the abstract, conclusions, and figures, gaining a general understanding of the content. A "finished" status indicates I read the paper in detail, though I may not have captured all the nuances. I'm happy to quickly go through multiple papers, dedicating about five minutes to each, and we can explore questions together based on the text. Alternatively, if there's a specific paper you'd like me to dive deeper into, let me know, and I'll allocate more time for a thorough review. I’ll also continue reading this week and may add more papers to the list as I progress.

Quick read:

A Host Galaxy Morphology Link Between Quasi-Periodic Eruptions and Tidal Disruption Events 2409.10486 (arxiv.org)

Synchrotron polarization of a hybrid distribution of relativistic thermal and nonthermal electrons in GRB prompt emission 2410.00471 (arxiv.org)

Multi-image x-ray interferometer module: II. Demonstration of high-resolution x-ray imaging with regular-interval coded apertures Multi-image x-ray interferometer module: II. Demonstration of high-resolution x-ray imaging with regular-interval coded apertures - Astrophysics Data System (harvard.edu)

The Effects of Instrumental Deadtime on NICER Timing Products The Effects of Instrumental Deadtime on NICER Timing Products - Astrophysics Data System (harvard.edu)

Multi-Phase Thermal Structure & The Origin of the Broad-Line Region, Torus, and Corona in Magnetically-Dominated Accretion Disks

(https://arxiv.org/pdf/2407.00160 )

Finished:

The Case for Super-Eddington Accretion: Connecting Weak X-ray and UV Line Emission in JWST Broad-Line AGN During the First Gyr of Cosmic Time The Case for Super-Eddington Accretion: Connecting Weak X-ray and UV Line Emission in JWST Broad-Line AGN During the First Gyr of Cosmic Time - Astrophysics Data System (harvard.edu)

Back from the dead: AT2019aalc as a candidate repeating TDE in an AGN

Back from the dead: AT2019aalc as a candidate repeating TDE in an AGN - Astrophysics Data System (harvard.edu)

Fragments of harmony amid apparent chaos: a closer look at the X-ray quasi-periodic eruptions of the galaxy RX J1301.9+2747

https://arxiv.org/abs/2409.01938

XRISM Spectroscopy of the Fe Kα Emission Line in the Seyfert AGN NGC 4151 Reveals the Disk, Broad Line Region, and Torus

https://arxiv.org/abs/2408.14300

Cygnus X-3 revealed as a Galactic ultraluminous X-ray source by IXPE

https://ui.adsabs.harvard.edu/abs/2024NatAs...8.1031V/abstract

A relativistic outflow model of the X-ray polarization in Cyg X-1

relativistic outflow model of the X-ray polarization in Cyg X-1 | Monthly Notices of the Royal Astronomical Society: Letters | Oxford Academic (oup.com)

[phajy]

Thanks for sharing these @jcjiang-dev. Lots of good papers so we are spoiled for choice!

I am particularly interested in the following (approximately in ranked order):

1. XRISM Spectroscopy of the Fe Kα Emission Line in the Seyfert AGN NGC 4151. Very excited to hear about the latest XRISM results.
2. Multi-image x-ray interferometer module. I have always been intrigued by X-ray interferometry and the possibility it provides for sub-micro-arcsecond imaging. Would really appreciate someone explaining how this particular method works. I've glanced at the paper but am perplexed!
3. A relativistic outflow model of the X-ray polarization in Cyg X-1. I would like to investigate some straightforward polarisation models and this looks like it will have a nice framework for calculating the polarisation properties of an outflow.

The Multi-Phase Thermal Structure & The Origin of the Broad-Line Region is very interesting but I presented this a few weeks ago. Although I might well have missed some stuff - I need to read it in much more detail.

However, others may prefer other papers in a different order...

[jcjiang-dev]

Thanks for sharing these @jcjiang-dev. Lots of good papers so we are spoiled for choice!

I am particularly interested in the following (approximately in ranked order):

1. XRISM Spectroscopy of the Fe Kα Emission Line in the Seyfert AGN NGC 4151. Very excited to hear about the latest XRISM results.

@phajy I can do that with no problem!

For people who are not familiar with the series of work, check out the Chandra paper led by Jon Miller on NGC 4151. There is one simulation for Athena and Xrism at the end of this paper too, which encourages us to think whether XRISM completes what they wished to do previously.

https://iopscience.iop.org/article/10.3847/1538-4357/aadbaa/pdf

2. Multi-image x-ray interferometer module. I have always been intrigued by X-ray interferometry and the possibility it provides for sub-micro-arcsecond imaging. Would really appreciate someone explaining how this particular method works. I've glanced at the paper but am perplexed!

I can present the first paper of this series if you wish to know how it works. See the link below. This first paper provided a more detailed introduction to the concept. The second paper published last week demonstrated that they successfully made the fringes in the lab.

https://ui.adsabs.harvard.edu/abs/2023JATIS...9b5004A/abstract

If Bristol can't access JATIS, let me know. I only found the published version using the Warwick library service, not through ADS.

3. A relativistic outflow model of the X-ray polarization in Cyg X-1. I would like to investigate some straightforward polarisation models and this looks like it will have a nice framework for calculating the polarisation properties of an outflow.

You are so nice (and British) to say this. Hahaha

The Multi-Phase Thermal Structure & The Origin of the Broad-Line Region is very interesting but I presented this a few weeks ago. Although I might well have missed some stuff - I need to read it in much more detail.

Sorry, I actually only skimmed it after you introduced this paper. I only wrote it down for my personal record and should have removed it from the list here.

However, others may prefer other papers in a different order...

Yes, I can be very quick discussing other papers too.

[jcjiang-dev]

@phajy @fjebaker May I propose this paper on arXiv today for next week's meeting? It looks very interesting, but I am not even smart enough to understand the 5th equation. I would really appreciate it if someone could quickly summarise this paper.

https://ui.adsabs.harvard.edu/abs/2024arXiv241006200L/abstract

[fjebaker]

@jcjiang-dev I actually was reading that paper earlier today! I will happily summarize it at the start of the next meeting.

[fjebaker]

I also saw https://arxiv.org/abs/2407.15915 "Mildly Super-Eddington Accretion Onto Slowly-Spinning Black Holes Explains the X-Ray Weakness of the Little Red Dots" Pacucci & Narayan 2024 (submitted back in July) has a new version on the arxiv today.

[jcjiang-dev]

@jcjiang-dev I actually was reading that paper earlier today! I will happily summarize it at the start of the next meeting.

Please do, @fjebaker Thanks a lot!