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communicating science

Nicholas Z. Rui

18 September 2023

Astrophysics

Relativity

Cosmology

Seminar

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scope

I am a graduate student

in astrophysics

theory

we will be talking about communicating science effectively

don’t take my word for it

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always keep the purpose in mind

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writing with purpose

what is their background?

would you give all these people the same presentation?

what do they care about?

what do you want to happen?

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writing with security

make concrete, “falsifiable” claims

honesty ≠ self-deprecation

don’t overassume background

don’t try to “blend in”

be concise

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writing papers

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title & abstract

Topic: A modified version of the magnetic Tayler instability can redistribute angular momentum fast enough to explain the slowly rotating cores of many stars. This may have implications for compact object mergers.

what would you title this paper?

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title & abstract

Topic: Previous authors discovered a Jupiter-mass planet around a red giant. Follow-up asteroseismic observations reveal that the star is helium-burning. Because of its low mass, it should have expanded ~200 solar radii at the helium flash and engulfed its planet.

what would you title this paper?

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title & abstract

Topic: Knots of gas coming from quasar jets experience Compton drag which prevents them from going faster than 20c. Very-long-baseline observations reveal that such knots can travel with apparent transverse speeds ~10 c, which is consistent with this picture.

what would you title this paper?

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title & abstract

Topic: A pedagogical review of magnetohydrodynamic turbulence, put in the context of current debates about the alignment theory.

what would you title this paper?

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title & abstract

Topic: We present a method to perform singularity excision in numerical relativistic simulations of binary black holes, without fixing the coordinates of the singularities.

what would you title this paper?

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title & abstract

Topic: The Laplace tidal equation describes the oscillation modes of a rotating star under the traditional approximation. We analytically derive the behavior of the eigenvalues of this equation at high spin parameter.

what would you title this paper?

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title & abstract

  1. introduces problem statement and/or background
  2. summarizes results concisely and concretely
  3. gives big picture impact: make people want to read this

abstract: a short summary which “sells” your work to the desired audience

The gravitational wave strain emitted by a perturbed black hole (BH) ringing down is typically modeled analytically using first-order BH perturbation theory. In this Letter, we show that second-order effects are necessary for modeling ringdowns from BH merger simulations. Focusing on the strain’s (ℓ,m)=(4,4) angular harmonic, we show the presence of a quadratic effect across a range of binary BH mass ratios that agrees with theoretical expectations. We find that the quadratic (4,4) mode’s amplitude exhibits quadratic scaling with the fundamental (2,2) mode—its parent mode. The nonlinear mode’s amplitude is comparable to or even larger than that of the linear (4,4) mode. Therefore, correctly modeling the ringdown of higher harmonics—improving mode mismatches by up to 2 orders of magnitude—requires the inclusion of nonlinear effects.

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anatomy

  1. introduction: introduce whatever relevant background, signpost your results
  2. methods: technical details
  3. results & discussion: present results, but contextualize in the context of things people actually care about
  4. conclusion: future work

“Future flares will continue to be important to determine which characteristics change and what remain the same, especially in the high energy regime.”

“Active galactic nuclei (AGN) normally vary stochastically across the electromagnetic spectrum, and the variability can be reasonably well-modeled as a damped random walk…”

“In this paper, we present analysis of the subsequent flare, which occurred as predicted in September 2020.”

“This ∼20 day timescale over which the flares’ blackbody luminosity decays is much shorter than for all previously studied TDEs.”

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making figures

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figures

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figures

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figures

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figures

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figures

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figures

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writing applications

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applications

this is just an essay which is trying to get somebody to do something (accept you)

this is a priority over:

  1. telling the story in order
  2. doing “justice” to time sinks you’ve gone through
  3. giving a detailed account of your work
  4. fitting in
  5. humility & apologizing

acting secure is particularly important here

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common purpose “mistakes”

  1. too long of an introduction

“When I was a kid, I looked to the stars…”

2. not motivating the science / hiding behind jargon

3. emphasizing boring things which take a lot of time

“Midway through my project, the vacuum in my cryostat was broken. Persistently, I repaired...”

4. not providing “evidence”

5. not having a coherent “story”

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common security “mistakes”

1. deemphasizing your own contribution

“With my advisor and a graduate student, we examined the behavior of potential superconductors. I contributed to an experiment to...”

“I was tasked with analyzing the distribution of earthlike planets…”

2. emphasizing hardship without a positive message

“Despite experiencing numerous mental health issues throughout undergraduate…”

3. passive language

“Although this project originally focused on nucleosynthesis in binary neutron star mergers, it evolved into a study of how the transient evolves.”

4. emphasizing learning basic technical skills

“In this project, I learned how to use MATLAB in research settings, and discovered that collaboration is central to doing research.”

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giving talks

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purpose

purpose: do you want a job? collaboration? money? is this pedagogical? affect a change of thinking in some field? etc.

length of talk matters: 5 min.? 15 min.? 1 hr?

contributed talk? colloquium? job talk?

most of the time: focus on a single key idea/intuition, since you won’t get much else done

audience matters: background? size?

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Simon Peyton-Jones

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style things

figures are key, but be sparse

be light on details: they can go to your paper for that

try to establish some logical flow

short bullets: no / few complete sentences

What does this look like in practice?

big, sans serif font, with important words emphasized

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from Janosz’s TASC talk

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talking to the public

empower the audience, not yourself

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Applications (Angela Collier): https://www.youtube.com/watch?v=tz42lx6BhqY

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always keep the purpose in mind!