on the nightglow polarisation a new window for space
play

On the nightglow polarisation: a new window for space weather - PowerPoint PPT Presentation

Sep 24, 2022 •22 likes •122 views

ESWW16 18/11/2019 Lo Bosse 1 , Jean Lilensten 1,5 , Nicolas Gillet 3 , Sylvain Rochat 1 , Alain Delboulb 1 , Stephane Curaba 1 , Alain Roux 1 , Yves Magnard 1 , Magnar G. Johnsen 4 , Unni-Pia Lvhaug 6 , Pierre-Olivier Amblard 2 , Nicolas le

  1. ESWW16 18/11/2019 Léo Bosse 1 , Jean Lilensten 1,5 , Nicolas Gillet 3 , Sylvain Rochat 1 , Alain Delboulbé 1 , Stephane Curaba 1 , Alain Roux 1 , Yves Magnard 1 , Magnar G. Johnsen 4 , Unni-Pia Løvhaug 6 , Pierre-Olivier Amblard 2 , Nicolas le Bihan 2 et Maxime Nabon 1 (1) Institut de Planétologie et d'Astrophysique de Grenoble (IPAG) CNRS – UGA, France (2) GIPSA-lab, Dept. Images and Signals, UMR CNRS, France (3) IsTerre, CNRS – UGA, France (4) Tromsø Geophysical Observatory, University of Tromsø, Tromsø, Norway (5) Honorary astronomer at Royal Observatory of Belgium, Brussels (6) Department of Physics and Technology, University of Tromsø, Tromsø, Norway On the nightglow polarisation: a new window for space weather observations?

  2. Electrons entry in the upper atmosphere ● Electromagnetic fields guiding electrons ● Excitation of upper atmosphere ● Radiative desexcitation 18/11/2019 Leo.Bosse@univ-grenoble-alpes.fr 2

  3. Transitions Atomic oxygen: ● Red (630 nm) ~200km ● Green (557.7 nm) ~110km Nitrogen N 2 + : ● Blue (427.8 nm) ~85km ● Purple (391.4 nm) ~85km Credits: NASA 18/11/2019 Leo.Bosse@univ-grenoble-alpes.fr 3

  4. Polarization processes ● Aurora polarization (Bommier et al., 2011) parallel to electron’s incoming direction ( theoretically possible in the red, not in the green) ● Rayleigh scattering in lower atmosphere 18/11/2019 Leo.Bosse@univ-grenoble-alpes.fr 4

  5. Interests and applications ● Discovery of auroral emissions polarization (Lilensten et al. 2008, 2013, 2015, 2016) ● Indirect and real-time monitoring of electromagnetic field in the transition region between internal and external magnetic field – Satellites too high – Balloons too low 18/11/2019 Leo.Bosse@univ-grenoble-alpes.fr 5

  6. Instrument: Petit Cru Color filter Incoming light Photomultiplier Rotating polarizing filter Intensity time series 18/11/2019 Leo.Bosse@univ-grenoble-alpes.fr 6 Time

  7. Q1: Where does it come from? 18/11/2019 Leo.Bosse@univ-grenoble-alpes.fr 7

  8. Q2: How is the green line polarized? 18/11/2019 Leo.Bosse@univ-grenoble-alpes.fr 8

  9. Conclusion ● The night sky is polarized ● 2 possible sources of polarization: – Upper atmosphere: Aurora / night-glow – Lower atmosphere: ● Rayleigh scattering : From aurora / city lights ● Aerosols ● New space weather proxy once disentangled ● Radiative transfer model and controlled environment to help us discriminate 18/11/2019 Leo.Bosse@univ-grenoble-alpes.fr 9

  10. Q3: Can we model RS contribution? N E S O N 18/11/2019 Leo.Bosse@univ-grenoble-alpes.fr 10

Download Presentation
Download Policy: The content available on the website is offered to you 'AS IS' for your personal information and use only. It cannot be commercialized, licensed, or distributed on other websites without prior consent from the author. To download a presentation, simply click this link. If you encounter any difficulties during the download process, it's possible that the publisher has removed the file from their server.

Recommend

Top polarisation at colliders Top polarisation: what physics can it probe Probes of the top

Top polarisation at colliders Top polarisation: what physics can it probe Probes of the top

Top polarisation at colliders. Rohini M. Godbole Top polarisation at colliders Top polarisation: what physics can it probe Probes of the top polarisation and effects of anomalous coupling on them. Example of use of angular

788 views • 62 slides
Lecture 5 - Polarisation (continued) - Gravitational waves and their imprints on the CMB The

Lecture 5 - Polarisation (continued) - Gravitational waves and their imprints on the CMB The

Lecture 5 - Polarisation (continued) - Gravitational waves and their imprints on the CMB The Single Most Important Things You Need to Remeber Polarisation is generated by the local quadrupole temperature anisotropy , which is proportional to

723 views • 45 slides
Lecture 4 - Polarisation of the CMB (continued) - Gravitational waves and their imprints on the

Lecture 4 - Polarisation of the CMB (continued) - Gravitational waves and their imprints on the

Lecture 4 - Polarisation of the CMB (continued) - Gravitational waves and their imprints on the CMB The Single Most Important Thing You Need to Remember Polarisation is generated by the local quadrupole temperature anisotropy , which is

705 views • 55 slides
Reionization: When How - What is left ? CMB : T and polarisation large and small scales

Reionization: When How - What is left ? CMB : T and polarisation large and small scales

Reionization: When How - What is left ? CMB : T and polarisation large and small scales Transmission of flux in high-z objects (z=6 qsos and GRBs) Direct HeII observations (lower z than HI) Sources of ionization The IGM: Temperature

323 views • 8 slides
OPTIMISING THE SPACE WHERE WOUND HEALING TAKES PLACE: THE 24-HOUR BIOFILM WINDOW Joy Tickle,

OPTIMISING THE SPACE WHERE WOUND HEALING TAKES PLACE: THE 24-HOUR BIOFILM WINDOW Joy Tickle,

OPTIMISING THE SPACE WHERE WOUND HEALING TAKES PLACE: THE 24-HOUR BIOFILM WINDOW Joy Tickle, John Timmons OBJECTIVES At the end of this presentation you will be able to understand: Complex clinical challenges in wound care Exudate

666 views • 40 slides
Day 2: Polarisation of the CMB Eiichiro Komatsu [Max Planck Institute for Astrophysics] University

Day 2: Polarisation of the CMB Eiichiro Komatsu [Max Planck Institute for Astrophysics] University

Lecture notes: https://wwwmpa.mpa-garching.mpg.de/~komatsu/lectures--reviews.html Day 2: Polarisation of the CMB Eiichiro Komatsu [Max Planck Institute for Astrophysics] University of Amsterdam March 5, 2020 How do we measure gravitational

1.01k views • 98 slides
CMB Polarisation: Toward an Observational Proof of Cosmic Inflation Eiichiro Komatsu,

CMB Polarisation: Toward an Observational Proof of Cosmic Inflation Eiichiro Komatsu,

CMB Polarisation: Toward an Observational Proof of Cosmic Inflation Eiichiro Komatsu, Max-Planck-Institut fr Astrophysik Higgs Centre Colloquium, Univ. of Edinburgh February 27, 2015 March 17, 2014 BICEP2s announcement January 30, 2015

805 views • 77 slides
Lecture 3 - Cosmological parameter dependence of the temperature power spectrum - Polarisation of

Lecture 3 - Cosmological parameter dependence of the temperature power spectrum - Polarisation of

Lecture 3 - Cosmological parameter dependence of the temperature power spectrum - Polarisation of the CMB Planck Collaboration (2016) Lets understand the peak heights Silk+Landau Damping Sachs-Wolfe Sound Wave Matching Solutions We

1.19k views • 83 slides
Measurement of the double polarisation observable G with the Crystal Barrel Experiment @ ELSA

Measurement of the double polarisation observable G with the Crystal Barrel Experiment @ ELSA

Measurement of the double polarisation observable G with the Crystal Barrel Experiment @ ELSA Marcus Grner for the CBELSA/TAPS Collaboration Supported by SFB/TR 16 Helmholtz-Institut fr Strahlen- und Kernphysik der Uni Bonn Content

454 views • 23 slides
Optimizing Queries Using Window Functions Viceniu Ciorbaru Agenda What are window

Optimizing Queries Using Window Functions Viceniu Ciorbaru Agenda What are window

Optimizing Queries Using Window Functions Viceniu Ciorbaru Agenda What are window functions? Practical use cases Why are window functions fast? Development status in MariaDB What are window functions? Similar to

669 views • 52 slides
Output in Window Systems and Toolkits Window Systems v. GUI Toolkits GUI Toolkit: what goes on

Output in Window Systems and Toolkits Window Systems v. GUI Toolkits GUI Toolkit: what goes on

Output in Window Systems and Toolkits Window Systems v. GUI Toolkits GUI Toolkit: what goes on inside a window Components, object models for constructing applications Dispatching events among all of the various listeners in an

657 views • 33 slides
Lecture 3 - Cosmological parameter dependence of the temperature power spectrum - Polarisation of

Lecture 3 - Cosmological parameter dependence of the temperature power spectrum - Polarisation of

Lecture 3 - Cosmological parameter dependence of the temperature power spectrum - Polarisation of the CMB - Gravitational waves and their imprints on the CMB Planck Collaboration (2016) Silk+Fuziness Damping Sachs-Wolfe Sound Wave Planck

1.65k views • 137 slides
Sublinear r Space Pri rivate Algori rithms Under r the Sliding Win Window M Mod odel

Sublinear r Space Pri rivate Algori rithms Under r the Sliding Win Window M Mod odel

Sublinear r Space Pri rivate Algori rithms Under r the Sliding Win Window M Mod odel Jalaj Upadhyay Differential Privacy ! " ! # A ! $ ! " & ! # A ! $ Differential Privacy ! " queries/tasks ! # A

866 views • 16 slides
CMB Polarisation: Toward an Observational Proof of Cosmic Inflation Eiichiro Komatsu,

CMB Polarisation: Toward an Observational Proof of Cosmic Inflation Eiichiro Komatsu,

CMB Polarisation: Toward an Observational Proof of Cosmic Inflation Eiichiro Komatsu, Max-Planck-Institut fr Astrophysik Colloquium, ICTP, October 22, 2014 March 17, 2014 BICEP2s announcement Signature of Cosmic Inflation in the Sky [?]

1.03k views • 76 slides
Sliding Window Protocol Sliding window protocol: Stop & Wait: inefficient if a is

Sliding Window Protocol Sliding window protocol: Stop & Wait: inefficient if a is

Computer Networks Prof. Hema A Murthy Sliding Window Protocol Sliding window protocol: Stop & Wait: inefficient if a is large. Data: - stream of bulk data - data can be pipelined - transmit window of date - donot

1.71k views • 13 slides
Sliding window - Sender side Cumulative Acknowledgments Not sent Sent, no ACK ACK:ed Free

Sliding window - Sender side Cumulative Acknowledgments Not sent Sent, no ACK ACK:ed Free

Sliding window - Sender side Cumulative Acknowledgments Not sent Sent, no ACK ACK:ed Free Sending buffer at the sender: Sliding Window New data sent to transport layer by application, but not yet sent Free buffer space where application

564 views • 3 slides
ABRAHAM LIM PRESENTATION AGENDA Ministry/Pastoral Report - Rhoda Attendance

ABRAHAM LIM PRESENTATION AGENDA Ministry/Pastoral Report - Rhoda Attendance

ABRAHAM LIM PRESENTATION AGENDA Ministry/Pastoral Report - Rhoda Attendance Communications Report - Robert Devotional - Pr Rhoda Volunteer Report - Tess Call Meeting to Order - Abe Treasurer/Financial

505 views • 5 slides
Reb ebuil ild By Des esig ign HUDSON RIV RIVER PROJE JECT: RE RESIST, DEL ELAY, STORE,

Reb ebuil ild By Des esig ign HUDSON RIV RIVER PROJE JECT: RE RESIST, DEL ELAY, STORE,

June 18, 2015 Reb ebuil ild By Des esig ign HUDSON RIV RIVER PROJE JECT: RE RESIST, DEL ELAY, STORE, DIS ISCHARGE Rebuild by Design Hudson River Project: Resist, Delay, Store, Discharge Public Meeting Agenda June 23, 2015 6:30 p.m.

1.01k views • 19 slides
OMA Energy Committee Richard Ricks NiSource/Columbia Gas of Ohio May 21, 2020 1 2019/2020 Ohio

OMA Energy Committee Richard Ricks NiSource/Columbia Gas of Ohio May 21, 2020 1 2019/2020 Ohio

Natural Gas Update OMA Energy Committee Richard Ricks NiSource/Columbia Gas of Ohio May 21, 2020 1 2019/2020 Ohio Winter Degree Days: 12 % Warmer 2 NOAA Temperature Outlook: May, June, & July 2020 3 Storage Above the 5 Yr Average

673 views • 18 slides
Mobile Applications and Services Mobile Applications and Services for NGN networks for NGN

Mobile Applications and Services Mobile Applications and Services for NGN networks for NGN

I nternational Telecom m unication Union ITU-T Mobile Applications and Services Mobile Applications and Services for NGN networks for NGN networks Anett S chlke NEC Network Laboratories Heidelberg NEC Europe Ltd. I TU-T W orkshop NGN

574 views • 19 slides
Investment Highlights Long-term concession investments in attractive locations Key value

Investment Highlights Long-term concession investments in attractive locations Key value

Investment Highlights Long-term concession investments in attractive locations Key value Strategic Matters in Mexico drivers Established regulatory framework Information Financial Track record of consistent passenger growth

569 views • 23 slides
Good Governance for Local Environment and Health Decision-Making: Insights from the Saskatoon

Good Governance for Local Environment and Health Decision-Making: Insights from the Saskatoon

Good Governance for Local Environment and Health Decision-Making: Insights from the Saskatoon pilot study David Noble and Cory Neudorf Presentation notes Note: The following document contains speaking notes for a presentation on the project

507 views • 8 slides
Overview of Azure IoT and Real Use Cases Defining Internet of Things Connectivity Data

Overview of Azure IoT and Real Use Cases Defining Internet of Things Connectivity Data

Overview of Azure IoT and Real Use Cases Defining Internet of Things Connectivity Data Analytics Things Platform Services Security & Hybrid Operations Management Cloud Service Web Apps Services Fabric API Apps DocumentDB SQL

671 views • 37 slides
Management of Parastomal Hernias Richmond University Hospital, July 2012 David A Vivas, MD

Management of Parastomal Hernias Richmond University Hospital, July 2012 David A Vivas, MD

www.downstatesurgery.org Management of Parastomal Hernias Richmond University Hospital, July 2012 David A Vivas, MD www.downstatesurgery.org Case Presentation HPI 85 y/o male s/p APR in 1978 for rectal cancer, no chemo/RT S/p TURP,

1.92k views • 97 slides

More recommend