Welcome Registration Venue & Accommodation Program Transportation



We are pleased to announce that we are organizing an international workshop entitled "X-ray Surveys of the Hot and Energetic Universe" on Jan 14-19, 2019 at Harbin, China. The host institute is Nanjing University with local assistance from Harbin Institute of Technology.


Harbin is the largest city in northeastern China, with a population of about 10 million (similar to New York City). It is especially beautiful in winter given the annual International Ice and Snow Sculpture Festival from January (e.g., https://en.wikipedia.org/wiki/Harbin_International_Ice_and_Snow_Sculpture_Festival
It is a large event of worldwide distinction, with the 2017 festival attracting 18 million visitors and having a revenue of $4.4 billion.

Scientific Rationale
In the past ~ 10-20 years, a broad range of surveys carried out by the Chandra, XMM-Newton, and NuSTAR observatories, from deep pencil-beam surveys to shallow wide-area surveys and non-contiguous serendipitous surveys, have enabled us to identify over half a million unique X-ray sources in the sky. These X-ray surveys, combined with complementary multiwavelength surveys, have revolutionized our understanding of the high-energy universe. This meeting will review the status and scientific discoveries of various X-ray and multiwavelength surveys, identify outstanding questions, and discuss prospects for future X-ray missions. Topics of the meeting will include strategy of current and forthcoming X-ray surveys plus complementary multiwavelength surveys; science results from these surveys for accreting binaries in the Milky Way and starburst/normal galaxies, growing supermassive black holes, and galaxy groups/clusters; and design and technologies for future X-ray surveyors. Via this workshop, we also aim to establish Chinese/international friendly connections and future collaborations, and to help build up the Chinese high-energy astronomical community.

Important Dates:

  • Sep 25: open for registration
  • Nov 29: deadline for registration & abstract submission
  • Mid Dec: program announcement
  • Jan 1:due date of online payments for the registration fee
  • Jan 14-19: workshop

Science Organizing Committee (SOC):
William N. Brandt (Penn State University, US, SOC Co-Chair)
Andrea Comastri (INAF, Italy)
Fiona Harrison (Caltech, US)
Bin Luo (Nanjing University, China, SOC Co-Chair)
Kirpal Nandra (MPE, Germany)
Megan Urry (Yale University, US)

Local Organizing Committee (LOC):
Pei Li (Nanjing University)
Zhiyuan Li (Nanjing University)
Hezhen Liu (Nanjing University)
Bin Luo (Nanjing University)
Weike Xiao (Harbin Institute of Technology)
Ying Yu (Nanjing University)



● Registration Deadline: Nov 29, 2018

● Registration Fee: US $150, Euro 125, or RMB ¥1000. For RMB payments, we will email you a link to pay via WeChat or Alipay (待我们导入信息后,有支付宝或微信的可以扫南大财务处平台的二维码支付,电子发票直接发送邮箱). For US dollar or Euro payments, please wire transfer to the corresponding account listed in the attached file. Alternatively, international participants may choose to pay with cash (either in US dollar, Euro, or RMB) at the registration desk. Online payments and wire transfers will need to be received by Jan 1, 2019.

● General information about the Chinese visa is available here and here. For people who will need a Chinese visa, please indicate so in the registration form and also send an email to peili@nju.edu.cn (Pei Li) with the following list of information: Full name, Gender, Date of birth, Nationality, Passport number, Passport issue date, Passport expiration date, Purpose of visit, Arrival date, Departure date, Places to be visited. We will email you the required invitation letter. It takes time to apply for the visa; please plan ahead.

● For any other requests regarding registration and/or accommodation, please contact bluo@nju.edu.cn (Bin Luo) directly.

Name: First name *
Last name *
Email Address: *
Position (e.g., Faculty/Postdoc/Graduate Student/Undergraduate Student):
Gender (only required if choosing to share a hotel room):
Chinese Visa:  Needed    Not needed
Presentation Information:  Invited talk    Solicited talk    General talk    No presentation (skip the below)
Harbin Arrival Date: *(2018-01-01 08:08)
Harbin Departure Date: *(2018-01-01 08:08)
Hotel Room: We have reserved a block of rooms at the Harbin Friendship Palace Hotel at a rate of $100 per night (detailed information available in the accommodation page). The number of reserved rooms is limited, and thus room choice is available on a first come first served basis.
Please choose one of the below:

We will send you a confirmation email after registration.

Venue and Accommodation


We have reserved a block of rooms at the Harbin Friendship Palace Hotel as well as one of its conference rooms.
The hotel rate is $100 per night. Please choose between one of the two types of standard rooms (two double beds or one king bed). The number of reserved rooms is limited; thus please register and reserve your hotel room as soon as possible.
Three meals per day are included from Jan 15 to Jan 18 (mainly buffet style meals plus one banquet).
Mid-January is the coldest (also the most beautiful) season in Harbin. The typical daytime temperature is ~ -4 to 23 ℉ (-20 to -5 ℃). Indoor areas are well heated, but you should bring sufficient clothing to keep warm for any outdoor activities.

About Harbin:
Harbin (Chinese: 哈尔滨 About this sound Hā'ěrbīn) is the capital of Heilongjiang province, and the largest city in the northeastern region of China. It has a major international airport (Harbin Taiping International Airport) with frequent flights from/to Beijing.
Holding sub-provincial administrative status, Harbin has direct jurisdiction over nine metropolitan districts, two county-level cities and seven counties. Harbin is the eighth most populous Chinese city according to the 2010 census, the built-up area (which consists of all districts except Shuangcheng and Acheng) had 5,282,093 inhabitants, while the total population of the sub-provincial city was up to 10,635,971. Harbin serves as a key political, economic, scientific, cultural, and communications hub in Northeast China, as well as an important industrial base of the nation.
See more information at https://en.wikipedia.org/wiki/Harbin .

About the Harbin International Ice and Snow Sculpture Festival 2019:
The Harbin International Ice and Snow Sculpture Festival (Chinese: 哈尔滨国际冰雪节; pinyin: Hā'ěrbīn Guójì Bīngxuě Jié) is an annual winter festival that takes place with a theme in Harbin, Heilongjiang, China, and now is the largest ice and snow festival in the world. At first participants in the festival were mainly Chinese, however it has since become an international festival and competition, with the 2017 festival attracting 18 million visitors and generating 28.7 billion yuan ($4.4 billion) of revenue. The festival includes the world's biggest ice sculptures.
Officially, the festival starts on January 5 and lasts one month. However, exhibits often open earlier and stay longer, weather permitting. While ice sculptures are erected throughout the city, there are two main exhibition areas:
Sun Island is a recreational area on the opposite side of the Songhua River from the city, which features an expo of enormous snow sculptures.
Ice and Snow World is an area open at night which features illuminated full size buildings made from blocks of 2–3' thick ice taken directly from the Songhua River.
See more information at https://en.wikipedia.org/wiki/Harbin_International_Ice_and_Snow_Sculpture_Festival.
Explanatory videos about this distinguished international event are available at

About the hotel:
The Harbin Friendship Palace Hotel (Ha'erbin Youyigong) looks out over Sun Island on the Songhua River and the Siberian Tiger Park beside the river. The hotel is neighboring the Ice-Snow World that will host various activities during the Harbin International Ice and Snow Festival in January. This Harbin hotel is also within walking distance of the historic Church of St. Sophia and the pedestrian shopping street Central Avenue (Zhongyang Dajie). Guestrooms offer panoramic views of the Songhua River and Stalin Park as well as all the standard amenities.

Google map location

酒店外观 (Outside Veiw)

酒店大堂 (Lobby)

迎宾楼标准间 (Yingbin Building, Standard Room – two double beds)

贵宾楼标准间 (Guibin Building, Standard Room – two double beds)

迎宾楼大床房 (Yingbin Building, Standard Room – one king bed)

贵宾楼大床房 (Guibin Building, Standard Room – one king bed)

会议室 (Conference Room, 70 person capacity)



Preliminary Program

Jan 14, Day 0, 10:00-20:00? Registration in the hotel lobby


Jan 15, Day 1

Session 1: X-ray Surveys of AGNs

08:30 – 09:00

Qiusheng Gu

Opening Remarks

09:00 – 09:45

Niel Brandt

A Good Hard Look at Cosmic Supermassive Black Hole Growth (Invited)

09:45 – 10:10

Maurizio Paolillo

Tracing the properties of Supermassive Black Holes through X-ray variability (Solicited)

10:10 – 10:40

Coffee Break

10:40 – 11:05

Nan Ding

Variability-selected LLAGN Candidates in the 7 Ms CDF-S

11:05 – 11:30

Junxian Wang

The origin and variation of AGNs X-ray emission (Solicited)

11:30 – 11:55

Elisabeta Lusso

X-ray surveys of quasars (Solicited)



Session 2: X-ray Surveys of AGNs

14:00 – 14:25

Yoshihiro Ueda

TBD (Solicited)

14:25 – 14:50

Luis Ho

X-ray studies of low-luminosity AGNs (Solicited)

14:50 – 15:15

Claudio Ricci

Obscuration properties of local AGN: an X-ray view (Solicited)

15:15 – 15:40

Hezhen Liu

The Frequency of Intrinsic X-Ray Weakness among Broad Absorption Line Quasars

15:40 – 16:10

Workshop Photo & Coffee Break

16:10 – 16:35

James Mullaney

Inferring the link between black hole growth and star-formation (Solicited)

16:35 – 17:00

Jianfeng Wu

X-ray Emission of High-Redshift Jetted Active Galactic Nuclei (Solicited)

17:00 – 17:25

Xingting Pu

On the fraction of X-ray weak quasars from the SDSS

17:25 – 17:50

Yongquan Xue

A close scrutiny of AGN X-ray spectral power density (Solicited)


Jan 16, Day 2

Session 3: X-ray Surveys of AGNs

08:30 – 09:10

Andrea Comastri

X-ray surveys of obscured accretion: results and perspectives (Invited)

09:10 – 09:35

Fabio Vito

The early growth of super-massive black holes in deep Chandra surveys (Solicited)

09:35 – 10:00

Cristian Vignali

The quest for obscured AGN (Solicited)

10:00 – 10:25

Coffee Break

10:25 – 10:50

James Aird

Tracking incidence of AGN across the galaxy population (Solicited)

10:50 – 11:15

Junyao Li

Piercing through highly obscured AGNs in the Chandra Deep Fields

11:15 – 11:40

Jian-Min Wang

Self-shadowing effects on X-rays in Active Galactic Nuclei (Solicited)

11:40 – 12:05

Fangzheng Shi

X-ray detection of an outflow from the low-luminosity super-massive black hole in M81





Session 4: Future Prospects from Currently Operating and New X-ray Missions; X-ray Surveys of AGNs

14:00 – 14:45

Weimin Yuan

Time-domain survey of the dynamic X-ray Universe with the Einstein Probe mission (Invited)

14:45 – 15:30

Francisco Carrera

Athena surveys of the Hot and Energetic Universe (Invited)

15:30 – 15:55


X-ray properties of IR selected AGN (Solicited)

15:55 – 16:20

Coffee Break

16:20 – 16:45

Mouyuan Sun

X-ray and MIR spectroscopy as a probe of AGN torus

16:45 – 17:10

George Lansbury

A sensitive hard X-ray census of the AGN population with NuSTAR (Solicited)

17:10 – 17:35

Christos Panagiotou

Mildly Obscured Active Galaxies; the CXB

17:35 – 18:00

Sotiria Fotopoulou

Active Galactic Nuclei in the XXL Survey (Solicited)



Jan 17, Day 3, Free day.

Jan 18, Day 4

Session 5: X-ray Surveys of the Milky Way and Normal Galaxies

08:30 – 08:55

Junfeng Wang

CHEERS! A Chandra and HST Survey Of Extended Emission-line Regions In Nearby Seyfert Galaxies (Solicited)

08:55 – 09:20

Hua Feng

Archival survey of nearby galaxies (Solicited)

09:20 – 09:45

Zhenlin Zhu

A Deep Chandra View of the X-ray non-thermal filaments in the Galactic Center

09:45 – 10:15

Coffee Break

10:15 – 10:40

Neven Vulic

Classifying Black Holes & Neutron Stars in Nearby Galaxies (Solicited)

10:40 – 11:05

Zhiyuan Li

TBD (Solicited)

11:05 – 11:30

Meicun Hou

Chandra Survey of Virgo and Formax

11:30 – 11:55

Zhongqun Chen

A Chandra Survey of Milky Way Globular Clusters



Session 6: Multiwavelength Connections and Surveys

14:00 – 14:45

Mara Salvato

X-ray sources characterization through multi-wavelength surveys (Invited)

14:45 –15:30

Marcella Brusa

X-ray and multiwavelength surveys: a powerful synergy (Invited)

15:30 – 16:00

Coffee Break

16:00 – 16:25

De Cicco

Optical Variability as a Tool for AGN Selection (Solicited)

16:25 – 16:50

Xinwen Shu

Multiwavelength properties of Herschel-selected submillimeter galaxies (Solicited)


15:50 – 17:10

Niel Brandt

Workshop Summary



Jan 19, Day 5, Departure



Harbin is a major city (airport code: HRB) in northern China. Flights to Harbin generally require a stop at Beijing, and there are many flights (~ 2 hr) between Beijing and Harbin every day.

From the Harbin Taiping International Airport (哈尔滨太平国际机场) to the Friendship Palace Hotel (哈尔滨友谊宫 is the Chinese name if you need to show it to the driver) requires a taxi trip for about 40 minutes that costs around RMB ¥80 (see google map below). We will also arrange a shuttle van running between the airport and the hotel every three hours on Jan 14 (tentative plan).

For international participants, please email us (peili@nju.edu.cn) your itinerary (flight numbers and dates) and your contact information (ideally your cell phone number) after booking your flights, so that we will be able to track your trip and provide suggestions in case of flight delays.

Below are a few examples of flights from several US and European airports (IAD, JFK, LAX, SFO, BOS, LHR, FRA, MUC, CDG, FCO) to Harbin, provided by booking.com. You may want to choose a longer layover at Beijing if you are not familiar with the airport.